Compare models
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 GPT-5.5OpenAI |  Claude 4.6 SonnetAnthropic |  Qwen3.6-27BAlibaba | |
|---|---|---|---|
| Vendor | OpenAI | Anthropic | Alibaba |
| Family | GPT | Claude | Qwen |
| Release date | 2026-04-23 | — | 2026-04-22 |
| Context window | 400,000 tokens | 200,000 tokens | 262,144 tokens |
| Parameters | — | — | 27B (dense) |
| Modality | text, vision, audio | text, vision | text, vision, video |
| License | proprietary | proprietary | Apache-2.0 |
| Source | proprietary | proprietary | open weights |
| Description | OpenAI's smartest and most intuitive model — successor to GPT-5, with major coding, research, and document workflow gains. GPT-5.5 Pro variant also available for heavier reasoning. | — | Alibaba's first dense open-weight in the 3.6 family. Strong agentic-coding scores (77.2 SWE-bench Verified, matching Claude 4.5 Opus on Terminal-Bench 2.0). Supports 201 languages and multimodal text/image/video input. |
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