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-Flash is a multimodal Qwen model with a million-token context window, aimed at coding assistance, agentic workflows and visual understanding. It is the hosted version of Qwen3.8-Flash-Next, which Qwen describes as an experimental preview of the architecture that will underpin Qwen4.
| Property | Claude Sonnet 5.5 | Qwen3.8-Flash |
|---|---|---|
| Released | Sep 28, 2026 | Aug 26, 2026 |
| Developer | Anthropic | Alibaba |
| Type | multimodal | multimodal |
| License | proprietary | open-weight |
| Context window | — | 1,000,000 |
| Parameters | — | 125B with 6B activated, plus 51B n-gram embedding and 4B MTP (open-weight base Qwen3.8-Flash-Next) |
| Developer status | — | — |
| Input $/M tokens | $2.00 | $0.15 |
| Output $/M tokens | $10.00 | $0.47 |
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-flash. CORS is open. Citation guidance: /about/editorial-process.