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 — Alibaba
Qwen3.8-27B is an open-weight 27-billion-parameter dense native vision-language model that understands images and videos, with thinking on by default and adjustable reasoning effort. It is released under Apache 2.0.
| Property | Claude Sonnet 5.5 | Qwen3.8-27B |
|---|---|---|
| Released | Sep 28, 2026 | Aug 19, 2026 |
| Developer | Anthropic | Alibaba |
| Type | multimodal | multimodal |
| License | proprietary | open-weight |
| Context window | — | 262,144 |
| Parameters | — | 27B (dense) |
| Developer status | — | — |
| Input $/M tokens | $2.00 | $0.50 |
| Output $/M tokens | $10.00 | $3.00 |
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.
Programmatic access available at /api/ai/compare?a=claude-sonnet-5-5&b=qwen-3-8-27b. CORS is open. Citation guidance: /about/editorial-process.