Top picks for Blog Post Writing (2026)
Drafting publishable long-form articles. Ranked from 430 live models on the OpenRouter catalog, weighted for reasoning quality, context window, low cost.
Updated 2026-09-10 · prices checked at this morning's rebuild
Which should you use? Anthropic: Claude Opus 4.7 (batch) tops this ranking on blended score. If cost drives the decision, OpenAI: o3 (batch) is the cheapest of the leaders at $1.00/M input.
| # | Model | Score | In / 1M | Out / 1M | Context | |
|---|---|---|---|---|---|---|
| 1 | Anthropic: Claude Opus 4.7 (batch)anthropic/claude-opus-4.7:batch | 140 | $2.50 | $12.50 | 1,000,000 | Details → |
| 2 | Anthropic: Claude Sonnet 4.6 (batch)anthropic/claude-sonnet-4.6:batch | 138 | $1.50 | $7.50 | 1,000,000 | Details → |
| 3 | Anthropic: Claude Sonnet 4.6anthropic/claude-sonnet-4.6 | 137 | $3.00 | $15.00 | 1,000,000 | Details → |
| 4 | Anthropic: Claude Opus 4.8 (batch)anthropic/claude-opus-4.8:batch | 134 | $2.50 | $12.50 | 1,000,000 | Details → |
| 5 | OpenAI: GPT-5.4 (batch)openai/gpt-5.4:batch | 134 | $1.25 | $7.50 | 1,050,000 | Details → |
| 6 | Anthropic: Claude Opus 4.7anthropic/claude-opus-4.7 | 134 | $5.00 | $25.00 | 1,000,000 | Details → |
| 7 | OpenAI: o3 (batch)openai/o3:batch | 134 | $1.00 | $4.00 | 200,000 | Details → |
| 8 | OpenAI: GPT-5 (batch)openai/gpt-5:batch | 133 | $0.62 | $5.00 | 400,000 | Details → |
| 9 | OpenAI: GPT-5.5 (batch)openai/gpt-5.5:batch | 133 | $2.50 | $15.00 | 1,050,000 | Details → |
| 10 | OpenAI: GPT-5.4openai/gpt-5.4 | 133 | $2.50 | $15.00 | 1,050,000 | Details → |
| 11 | OpenAI: o3openai/o3 | 133 | $2.00 | $8.00 | 200,000 | Details → |
| 12 | Z.ai: GLM 5.2 (batch)z-ai/glm-5.2:batch | 133 | $0.70 | $2.20 | 1,048,576 | Details → |
| 13 | OpenAI: GPT-5openai/gpt-5 | 133 | $1.25 | $10.00 | 400,000 | Details → |
| 14 | OpenAI: GPT-5.2 (batch)openai/gpt-5.2:batch | 132 | $0.88 | $7.00 | 400,000 | Details → |
| 15 | DeepSeek: DeepSeek V4 Pro 0423deepseek/deepseek-v4-pro | 132 | $0.96 | $1.91 | 1,048,576 | Details → |
How we ranked these
For Blog Post Writing, we weight models on reasoning quality, context window, low cost. Scores combine each model's public specs with independent benchmark results (Aider Polyglot coding scores, Artificial Analysis intelligence/coding/agentic indices) and live pricing. See full methodology →
About Blog Post Writing
Blog post writing is the task of generating complete, publication-ready long-form articles (typically 1,500-5,000+ words) with coherent structure, cited claims, and editorial voice. You need this when producing content at scale or when drafting requires sustained narrative quality across multiple sections. Good models maintain argument consistency across long outputs, adapt tone to audience, and organize information hierarchically; poor ones lose coherence mid-article, repeat points, or produce generic filler. Speed matters here: Claude and GPT-4 produce better first drafts but take 30-90 seconds per article, while faster models like GPT-3.5 cut that to 10-20 seconds but typically need heavier editing passes, adding total production time.
When to use: Use this when you need to publish multiple articles weekly or monthly, or when you want a model to draft a full 2,000+ word piece that requires only light fact-checking and stylistic refinement before going live.
Common questions
Which AI model produces the most publishable blog drafts with minimal editing?
Claude 3.5 Sonnet and GPT-4o consistently produce the most structurally sound, tonally consistent drafts. Both maintain argument coherence across long outputs and integrate sources naturally, though Claude edges ahead on voice consistency. Expect 5-15% revision rate versus 25-40% for faster models.
How much does it cost to generate a full 2,500-word blog post using top-tier models?
Claude 3.5 Sonnet costs roughly $0.08-0.12 per article at standard token rates; GPT-4o runs $0.15-0.25. For monthly content at 10 articles, budget $1-3 monthly in API costs, plus 2-4 hours of editorial review time per month.