# WP Agentic Writer: Model Selection & Preset Packs

## Executive Summary

This document defines 3 curated model packs for WP Agentic Writer on OpenRouter, optimized for different user budgets and quality requirements. Each pack includes models for 6 tasks: chat, clarity checking, planning, writing, refinement, and image generation.

**Key principle:** Users bring their own OpenRouter API key. Plugin ships with sensible presets so users just pick "Budget / Balanced / Premium"—no model switching needed unless they want to customize.

---

## Table of Contents

1. [Model Recommendation Strategy](#model-recommendation-strategy)
2. [Preset Pack 1: Budget](#preset-pack-1-budget)
3. [Preset Pack 2: Balanced (Recommended)](#preset-pack-2-balanced-recommended)
4. [Preset Pack 3: Premium](#preset-pack-3-premium)
5. [Cost Estimation Guide](#cost-estimation-guide)
6. [When to Use Each Pack](#when-to-use-each-pack)
7. [Implementation Config](#implementation-config)

---

## Model Recommendation Strategy

### Task-by-Task Rationale

#### 1. Chat (Discussion, Recommendation, Research)

**What it does:** Multi-turn conversation where user discusses topic, asks questions, researches ideas before committing to writing.

**Quality metrics:**
- Context understanding
- Iterative reasoning
- Long-context support (for multi-message research threads)
- Cost per token (since users may have many back-and-forth turns)

**Recommendation by tier:**

| Tier | Model | Reason |
|------|-------|--------|
| Budget | DeepSeek V3.x | Strong reasoning, excellent value pricing (~$0.55/1M input tokens) |
| Balanced | Gemini 3 Flash Preview | Built for multi-turn agentic workflows, 1M context window, cheaper than Pro |
| Premium | Gemini 3 Flash Preview or GPT-5.2 Chat | Flash for cost savings on research; GPT-5.2 if user wants single OpenAI vendor |

---

#### 2. Clarity Check (Prompt QA + Quiz Generation)

**What it does:** Analyzes user's article topic/prompt for ambiguity, generates clarifying questions, suggests research gaps, and optionally generates self-assessment quiz.

**Quality metrics:**
- Meta-reasoning (ability to critique its own instructions)
- Quiz/checklist generation quality
- Cost per query (typically short, one-off)

**Recommendation by tier:**

| Tier | Model | Reason |
|------|-------|--------|
| Budget | DeepSeek V3.x | Good at structured reasoning, checklist generation; very cheap |
| Balanced | Gemini 3 Flash Preview | Excellent at prompt analysis and quiz generation; fast feedback loop |
| Premium | Claude Sonnet 4 | Nuanced feedback; exceptional at Socratic question generation |

---

#### 3. Planning (Article Outline Generation)

**What it does:** Takes finalized topic + research notes → generates structured article outline (sections, subsections, key points) as JSON or markdown.

**Quality metrics:**
- Structured output (JSON/markdown reliability)
- Long-context input (researched notes, competitor articles, etc.)
- Cost (ideally one-off, but might regenerate)
- Speed (user should see outline quickly)

**Recommendation by tier:**

| Tier | Model | Reason |
|------|-------|--------|
| Budget | Gemini 3 Flash Preview | 1M context window, fast, cheap, excellent JSON output |
| Balanced | Gemini 3 Flash Preview | Same: primary "thinking" engine; doesn't need premium pricing |
| Premium | Gemini 3 Flash Preview | Same: planning quality doesn't scale with cost; still Flash is optimal |

---

#### 4. Writing (Article Draft Generation)

**What it does:** Transforms outline + research notes → full article draft (2–5k words), with proper tone, code examples if relevant, and flow.

**Quality metrics:**
- Long-form coherence (2–5k words)
- Tone consistency (match blog voice)
- Code + explanation blending (if dev/tech topic)
- Cost per article (this is the "heavy lift")

**Recommendation by tier:**

| Tier | Model | Reason |
|------|-------|--------|
| Budget | Mistral Small | Fast, cheap (~$0.14/1M input); acceptable first drafts for dev blogs; editable output |
| Balanced | Claude Sonnet 3.5 or 4 | Industry standard for long-form; strong at code blocks + prose blend; great value/quality ratio |
| Premium | GPT-5.2 or Claude Opus 4.5 | Frontier models; superior narrative flow, voice consistency, subtle nuance across 2–5k words |

---

#### 5. Refinement (Paragraph/Section Edits)

**What it does:** User selects 1–3 paragraphs → asks AI to rewrite, expand, shorten, simplify, or adjust tone.

**Quality metrics:**
- Precision editing (preserve surrounding context)
- Tone control (match existing prose)
- Cost efficiency (small rewrites should be cheap)

**Recommendation by tier:**

| Tier | Model | Reason |
|------|-------|--------|
| Budget | DeepSeek V3.x | Cheap, capable at local edits; good enough for "shorten this" / "make beginner-friendly" |
| Balanced | Claude Sonnet 3.5 or 4 | Same model as writing phase for consistency; strong at nuanced rewrites |
| Premium | GPT-5.2 or Claude Opus 4.5 | Same frontier writer for final polish; maintains voice across refinements |

---

#### 6. Image Generation

**What it does:** Generates 1–4 hero or inline images per article based on outline + user direction.

**Quality metrics:**
- Visual quality (coherence, aesthetic fit for blog)
- Prompt adherence (matches user's description)
- Cost per image (users may want multiple attempts)
- Speed (not blocking)

**Recommendation by tier:**

| Tier | Model | Reason |
|------|-------|--------|
| Budget | FLUX.2 [klein] 4B | Optimized for cost (~$0.014 USD/MP base); acceptable for blog illustrations |
| Balanced | Riverflow V2 Max or FLUX.2 Pro | Higher visual quality; flat ~$0.03–0.04 USD per image; good for professional blogs |
| Premium | FLUX.2 [max] | Frontier image quality; best prompt adherence; hero/marketing images (~$0.07 USD/MP base) |

---

## Preset Pack 1: Budget

### Target User

- Indie dev blogger or beginner content creator
- Cost-sensitive; prioritizes shipping over perfection
- Acceptable output: readable first drafts, simple blog images
- Typical use: 2–3 articles/month

### Complete Model Pack

| Task | Model | Provider | Rationale |
|------|-------|----------|-----------|
| Chat | DeepSeek V3.x | OpenRouter | Powerful reasoning, 1/10th the cost of GPT-4.5 |
| Clarity | DeepSeek V3.x | OpenRouter | Meta-reasoning for prompt analysis |
| Planning | Gemini 3 Flash Preview | OpenRouter | 1M context, fast outlining, dirt cheap |
| Writing | Mistral Small | OpenRouter | Budget-friendly long-form; acceptable for drafts |
| Refinement | DeepSeek V3.x | OpenRouter | Cost-efficient edits; reuse for multiple refinements |
| Image | FLUX.2 [klein] 4B | OpenRouter (Black Forest Labs) | Optimized for cost; good enough for blog headers |

### Cost Breakdown (Per 2,500-word Article + 3 Images)

**Text costs (tokens):**

Typical usage:
- Chat phase: ~3,000 input + 500 output tokens (discussion)
- Clarity: ~1,000 input + 300 output tokens (prompt analysis)
- Planning: ~2,000 input + 800 output tokens (outline)
- Writing: ~4,000 input + 2,500 output tokens (draft generation)
- Refinement: ~1,000 input + 400 output tokens (one round of edits)

| Task | Input Tokens | Output Tokens | Cost (USD) |
|------|--------------|---------------|-----------|
| Chat (DeepSeek) | 3,000 | 500 | $0.0019 |
| Clarity (DeepSeek) | 1,000 | 300 | $0.0007 |
| Planning (Flash) | 2,000 | 800 | $0.0009 |
| Writing (Mistral Small) | 4,000 | 2,500 | $0.0090 |
| Refinement (DeepSeek) | 1,000 | 400 | $0.0008 |
| **Text subtotal** | | | **$0.0133** |

**Image costs:**

- 3 images × ~1 MP each via FLUX.2 klein
- First MP per image: $0.014
- Subsequent MP per image: $0.001
- 3 images × $0.014 ≈ **$0.042**

**OpenRouter platform fee:**
- 5.5% of total ≈ 5.5% × ($0.0133 + $0.042) ≈ **$0.0045**

| Category | Cost (USD) |
|----------|-----------|
| Text (all tasks) | $0.0133 |
| Images (3 × 1 MP) | $0.0420 |
| OpenRouter platform fee (5.5%) | $0.0045 |
| **Total/Article** | **$0.0598** |

**💰 Budget pack = ~$0.06 USD/article (or ~$0.18–0.30 USD if user refines/regenerates once)**

---

## Preset Pack 2: Balanced (Recommended)

### Target User

- Active dev/content creator or small agency
- Shipping 4–10 articles/month
- Quality matters; willing to pay for strong writing
- Acceptable output: polished, professional prose; nice images
- Balance: cost-efficient without sacrificing quality

### Complete Model Pack

| Task | Model | Provider | Rationale |
|------|-------|----------|-----------|
| Chat | Gemini 3 Flash Preview | OpenRouter | Multi-turn agentic chat, 1M context, research-ready |
| Clarity | Gemini 3 Flash Preview | OpenRouter | Same engine; great at prompt analysis, quiz generation |
| Planning | Gemini 3 Flash Preview | OpenRouter | Primary "thinking" engine; excellent JSON outline generation |
| Writing | Claude Sonnet 3.5 or 4 | OpenRouter | Industry standard long-form; strong code + prose blend |
| Refinement | Claude Sonnet 3.5 or 4 | OpenRouter | Same as writing; consistency in rewrites and tone |
| Image | Riverflow V2 Max or FLUX.2 Pro | OpenRouter | High visual quality; flat ~$0.03–0.04 USD per image |

### Cost Breakdown (Per 2,500-word Article + 3 Images)

**Text costs (tokens):**

| Task | Input Tokens | Output Tokens | Cost (USD) |
|------|--------------|---------------|-----------|
| Chat (Flash) | 3,000 | 500 | $0.0015 |
| Clarity (Flash) | 1,000 | 300 | $0.0005 |
| Planning (Flash) | 2,000 | 800 | $0.0008 |
| Writing (Claude Sonnet) | 4,000 | 2,500 | $0.0300 |
| Refinement (Claude Sonnet) | 1,000 | 400 | $0.0060 |
| **Text subtotal** | | | **$0.0388** |

**Image costs:**

- 3 images × Riverflow V2 Max (flat pricing ~$0.03 per image)
- 3 images × $0.03 ≈ **$0.0900**

**OpenRouter platform fee:**
- 5.5% × ($0.0388 + $0.0900) ≈ **$0.0071**

| Category | Cost (USD) |
|----------|-----------|
| Text (all tasks) | $0.0388 |
| Images (3 × flat rate) | $0.0900 |
| OpenRouter platform fee (5.5%) | $0.0071 |
| **Total/Article** | **$0.1359** |

**💰 Balanced pack = ~$0.14 USD/article (or ~$0.25–0.35 USD with one round of refinement/regen)**

---

## Preset Pack 3: Premium

### Target User

- Content agencies or full-time creators
- Publishing 15+ articles/month or selling content
- Quality is non-negotiable (flagship posts, sales pages, thought leadership)
- Acceptable output: publication-ready prose; hero images
- Budget: cost is secondary to impact

### Complete Model Pack

| Task | Model | Provider | Rationale |
|------|-------|----------|-----------|
| Chat | Gemini 3 Flash Preview or GPT-5.2 Chat | OpenRouter | Flash for efficient research; GPT-5.2 if user wants single OpenAI vendor |
| Clarity | Claude Sonnet 4 | OpenRouter | Exceptional at nuanced prompt feedback and Socratic questioning |
| Planning | Gemini 3 Flash Preview | OpenRouter | Long-context planner; cost doesn't improve quality for outlining |
| Writing | GPT-5.2 or Claude Opus 4.5 | OpenRouter | Frontier long-form quality; superior narrative flow, voice, nuance |
| Refinement | GPT-5.2 or Claude Opus 4.5 | OpenRouter | Same frontier writer; final editorial polish |
| Image | FLUX.2 [max] | OpenRouter (Black Forest Labs) | Top-tier image quality; best prompt following; hero/marketing grade |

### Cost Breakdown (Per 2,500-word Article + 3 Images)

**Text costs (tokens):**

| Task | Input Tokens | Output Tokens | Cost (USD) |
|------|--------------|---------------|-----------|
| Chat (Flash) | 3,000 | 500 | $0.0015 |
| Clarity (Sonnet 4) | 1,000 | 300 | $0.0015 |
| Planning (Flash) | 2,000 | 800 | $0.0008 |
| Writing (GPT-5.2 or Opus) | 4,000 | 2,500 | $0.0700 |
| Refinement (GPT-5.2 or Opus) | 1,000 | 400 | $0.0140 |
| **Text subtotal** | | | **$0.0878** |

**Image costs:**

- 3 images × ~1 MP each via FLUX.2 [max]
- First MP per image: $0.07
- Subsequent MP per image: $0.03
- 3 images × $0.07 ≈ **$0.2100**

**OpenRouter platform fee:**
- 5.5% × ($0.0878 + $0.2100) ≈ **$0.0164**

| Category | Cost (USD) |
|----------|-----------|
| Text (all tasks) | $0.0878 |
| Images (3 × max quality) | $0.2100 |
| OpenRouter platform fee (5.5%) | $0.0164 |
| **Total/Article** | **$0.3142** |

**💰 Premium pack = ~$0.31 USD/article (or ~$0.50–0.75 USD with multiple refinement passes or image regen)**

---

## Cost Estimation Guide

### How Users Can Calculate Their Needs

Use this framework to estimate monthly costs:

```
Monthly AI Cost = (Cost/Article) × (Articles/Month) × (Regenerations Factor)
```

**Step 1: Pick your tier and note cost/article**
- Budget: $0.06
- Balanced: $0.14
- Premium: $0.31

**Step 2: Estimate articles per month**
- Blogger: 2–4 articles/month
- Small content team: 5–10 articles/month
- Agency: 15–30 articles/month

**Step 3: Apply regeneration factor**
- First drafts only (happy with output): ×1.0
- One round of refinement/regeneration: ×1.5–2.0
- Heavy iteration (multiple regen cycles): ×2.5–3.0

**Example calculations:**

| Profile | Tier | Articles/mo | Regens | Monthly Cost |
|---------|------|-----------|---------|--------------|
| Solo dev blogger | Budget | 2 | ×1.5 | $0.06 × 2 × 1.5 = **$0.18** |
| Content team | Balanced | 8 | ×2.0 | $0.14 × 8 × 2.0 = **$2.24** |
| Agency (flagship posts) | Premium | 12 | ×2.5 | $0.31 × 12 × 2.5 = **$9.30** |

### Important Notes

1. **Token counts are estimates.** Actual usage depends on:
   - Outline complexity
   - Number of research notes
   - Image resolution and complexity
   - Iteration/refinement cycles

2. **OpenRouter base price + 5.5% platform fee** is included in all estimates above.

3. **No hidden costs.** Users only pay for what they use. If they skip image generation or skip refinement, cost drops.

4. **Image costs scale with resolution.** If user requests higher resolution (>1 MP per image), multiply image cost accordingly.

---

## When to Use Each Pack

### Budget Pack: Best For

✅ **Use when:**
- First time using AI writing; want to test the plugin
- Publishing 1–3 articles/month
- Topic: dev blogs, quick tutorials (where first drafts are acceptable)
- Budget: <$5/month

❌ **Not ideal for:**
- Sales pages or high-stakes content
- Audiences expecting polish
- Topics requiring heavy editing

**Workflow expectation:** User accepts 1–2 refinement cycles before publishing.

---

### Balanced Pack: Best For (RECOMMENDED DEFAULT)

✅ **Use when:**
- Regular blogging (4–10 articles/month)
- Mixed content: tutorials, reviews, opinion pieces
- Publishing to professional blog or portfolio
- Budget: $5–20/month

✅ **Default recommendation because:**
- Gemini Flash is the best pure planner on the market (cost doesn't improve planning)
- Claude Sonnet is the industry-standard long-form writer
- Cost:quality ratio is unbeatable
- Users can hit "publish" with minimal editing

❌ **Not ideal for:**
- One-off flagship posts (Premium is worth it)
- Micro-budget users (use Budget instead)

**Workflow expectation:** User does one refinement cycle; publishes with high confidence.

---

### Premium Pack: Best For

✅ **Use when:**
- Publishing flagship posts, thought leadership, or sales content
- Publishing 10+ articles/month (agency/professional creator)
- Audiences/stakeholders expect flawless prose
- Images need to be hero/standout quality
- Budget: $20–100+/month

✅ **Worth the cost because:**
- GPT-5.2 or Opus produce superior long-form narrative
- Superior voice consistency across 2–5k words
- FLUX.2 [max] images are publication-ready
- Minimal editing required

❌ **Overkill for:**
- Quick dev blogs or tutorials
- Solo bloggers publishing <5/month

**Workflow expectation:** User does light editing (if any); publishes immediately.

---

## Implementation Config

### JSON Schema for Plugin Settings

Save presets as JSON config so users can swap or customize:

```json
{
  "presets": {
    "budget": {
      "name": "Budget: DeepSeek + Flash + Mistral + FLUX.2 klein",
      "description": "Super affordable ($0.06/article). Great for testing or budget-conscious bloggers.",
      "models": {
        "chat": {
          "model": "deepseek-v3",
          "provider": "openrouter",
          "description": "DeepSeek V3: Fast, cheap, great reasoning"
        },
        "clarity": {
          "model": "deepseek-v3",
          "provider": "openrouter",
          "description": "DeepSeek V3: Meta-reasoning for prompt analysis"
        },
        "planning": {
          "model": "google/gemini-3-flash-preview",
          "provider": "openrouter",
          "description": "Gemini 3 Flash: 1M context, fast outlining"
        },
        "writing": {
          "model": "mistral/mistral-small",
          "provider": "openrouter",
          "description": "Mistral Small: Budget-friendly long-form"
        },
        "refinement": {
          "model": "deepseek-v3",
          "provider": "openrouter",
          "description": "DeepSeek V3: Cost-efficient paragraph edits"
        },
        "image": {
          "model": "black-forest-labs/flux.2-klein",
          "provider": "openrouter",
          "description": "FLUX.2 klein: Optimized for cost"
        }
      },
      "cost_per_article": {
        "text": 0.0133,
        "images": 0.0420,
        "platform_fee": 0.0045,
        "total": 0.0598,
        "currency": "USD"
      }
    },
    "balanced": {
      "name": "Balanced (RECOMMENDED): Gemini Flash + Claude Sonnet + Riverflow",
      "description": "Professional quality ($0.14/article). Default for most creators.",
      "models": {
        "chat": {
          "model": "google/gemini-3-flash-preview",
          "provider": "openrouter",
          "description": "Gemini 3 Flash: Multi-turn agentic chat, 1M context"
        },
        "clarity": {
          "model": "google/gemini-3-flash-preview",
          "provider": "openrouter",
          "description": "Gemini 3 Flash: Excellent at prompt analysis"
        },
        "planning": {
          "model": "google/gemini-3-flash-preview",
          "provider": "openrouter",
          "description": "Gemini 3 Flash: Primary thinking engine"
        },
        "writing": {
          "model": "anthropic/claude-3.5-sonnet",
          "provider": "openrouter",
          "description": "Claude Sonnet: Industry standard long-form"
        },
        "refinement": {
          "model": "anthropic/claude-3.5-sonnet",
          "provider": "openrouter",
          "description": "Claude Sonnet: Consistent rewrites"
        },
        "image": {
          "model": "sourceful/riverflow-v2-max",
          "provider": "openrouter",
          "description": "Riverflow V2 Max: High-quality images"
        }
      },
      "cost_per_article": {
        "text": 0.0388,
        "images": 0.0900,
        "platform_fee": 0.0071,
        "total": 0.1359,
        "currency": "USD"
      }
    },
    "premium": {
      "name": "Premium: GPT-5.2/Opus + Gemini Flash + FLUX.2 max",
      "description": "Flagship quality ($0.31/article). For agencies and thought leaders.",
      "models": {
        "chat": {
          "model": "google/gemini-3-flash-preview",
          "provider": "openrouter",
          "description": "Gemini 3 Flash: Efficient research"
        },
        "clarity": {
          "model": "anthropic/claude-sonnet-4",
          "provider": "openrouter",
          "description": "Claude Sonnet 4: Exceptional feedback"
        },
        "planning": {
          "model": "google/gemini-3-flash-preview",
          "provider": "openrouter",
          "description": "Gemini 3 Flash: Long-context planner"
        },
        "writing": {
          "model": "openai/gpt-5.2",
          "provider": "openrouter",
          "description": "GPT-5.2: Frontier long-form quality"
        },
        "refinement": {
          "model": "openai/gpt-5.2",
          "provider": "openrouter",
          "description": "GPT-5.2: Final editorial polish"
        },
        "image": {
          "model": "black-forest-labs/flux.2-max",
          "provider": "openrouter",
          "description": "FLUX.2 max: Hero-grade images"
        }
      },
      "cost_per_article": {
        "text": 0.0878,
        "images": 0.2100,
        "platform_fee": 0.0164,
        "total": 0.3142,
        "currency": "USD"
      }
    }
  }
}
```

### How to Use in Plugin

1. **Load preset on plugin activation:**
   ```php
   $preset = get_option('agentic_writer_preset', 'balanced');
   $presets = json_decode(file_get_contents(__DIR__ . '/model-presets.json'), true);
   $active_models = $presets['presets'][$preset]['models'];
   ```

2. **Route API calls based on preset:**
   ```php
   switch ($task_type) {
       case 'chat':
           $model = $active_models['chat']['model'];
           break;
       case 'writing':
           $model = $active_models['writing']['model'];
           break;
       // ... etc
   }
   ```

3. **Display cost estimate in UI:**
   ```php
   $cost = $presets['presets'][$preset]['cost_per_article']['total'];
   echo "Estimated cost: ${$cost}/article";
   ```

---

## Summary Table

Quick reference for all 3 packs:

| Aspect | Budget | Balanced | Premium |
|--------|--------|----------|---------|
| **Chat** | DeepSeek | Gemini Flash | Gemini Flash |
| **Clarity** | DeepSeek | Gemini Flash | Claude Sonnet 4 |
| **Planning** | Gemini Flash | Gemini Flash | Gemini Flash |
| **Writing** | Mistral Small | Claude Sonnet | GPT-5.2/Opus |
| **Refinement** | DeepSeek | Claude Sonnet | GPT-5.2/Opus |
| **Image** | FLUX.2 klein | Riverflow V2 Max | FLUX.2 max |
| **Cost/Article** | **$0.06** | **$0.14** | **$0.31** |
| **Monthly (8 articles)** | **$0.48** | **$1.12** | **$2.48** |
| **Monthly (20 articles)** | **$1.20** | **$2.80** | **$6.20** |
| **Target User** | Hobbyist/test | Active creator | Agency/Pro |
| **Default?** | ❌ | ✅ RECOMMENDED | ❌ |

---

## Next Steps

1. **Implement preset switcher in plugin settings** – Let users pick Budget / Balanced / Premium
2. **Add cost calculator to UI** – Show estimated cost before user generates
3. **Support preset customization** – Allow power users to swap individual models
4. **Track actual costs** – Log usage and compare to estimates for billing transparency

---

## Appendix: Model Slugs

These are the exact model identifiers for OpenRouter API calls (as of January 2026):

```
deepseek-v3
google/gemini-3-flash-preview
anthropic/claude-3.5-sonnet
anthropic/claude-sonnet-4
mistral/mistral-small
openai/gpt-5.2
black-forest-labs/flux.2-klein
black-forest-labs/flux.2-max
sourceful/riverflow-v2-max
```

**Note:** Model names and slugs may change slightly as providers update. Verify against [OpenRouter Models](https://openrouter.ai/models) before deploying.

---

**Document version:** 1.0  
**Date:** January 22, 2026  
**Author:** WP Agentic Writer Product Team  
**Status:** Ready for Implementation