AI Model Comparison
Side-by-side comparison of pricing, context window, benchmarks, capabilities, and license. Every figure comes from the developer's own pages, last checked on ; each model's page lists its sources. A figure we could not source shows as a dash.
Model A — Anthropic
Claude Sonnet 5.5 is a model from Anthropic, released on September 28, 2026, which Anthropic describes as its best combination of speed and intelligence. It takes text and image input, returns text, and supports adaptive thinking; Anthropic names it the replacement for Claude Sonnet 4.5.
Model B — Mistral AI
Mistral Large 4 is a mixture-of-experts model from Mistral AI with 1.05T total and 52B active parameters, first offered as an API preview on October 6, 2026; Mistral has since published its weights on Hugging Face. It takes text and image input, returns text, and supports function calling and configurable reasoning effort.
| Property | Claude Sonnet 5.5 | Mistral Large 4 |
|---|---|---|
| Released | Sep 28, 2026 | Oct 6, 2026 |
| Developer | Anthropic | Mistral AI |
| Type | multimodal | multimodal |
| License | proprietary | open-weight |
| Context window | — | — |
| Parameters | — | 1.05T total, 52B active (mixture of experts) |
| Developer status | — | — |
| Input $/M tokens | $2.00 | — |
| Output $/M tokens | $10.00 | — |
Bold green values indicate the winner on that dimension where comparison is meaningful (lower price wins; bigger context wins; more open license wins; newer date wins). Prices are the ones each developer lists today; a model it no longer prices has none.
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Programmatic access available at /api/ai/compare?a=claude-sonnet-5-5&b=mistral-large-4. CORS is open. Citation guidance: /about/editorial-process.