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 o3OpenAI |  Claude 4.5 HaikuAnthropic |  Qwen3.6-27BAlibaba | GPT-5 OpenAI | |
|---|---|---|---|---|
| Vendor | OpenAI | Anthropic | Alibaba | OpenAI |
| Family | o-series | Claude | Qwen | GPT |
| Release date | 2025-04-16 | 2025-10-01 | 2026-04-22 | 2025-08-07 |
| Context window | 200,000 tokens | 200,000 tokens | 262,144 tokens | 400,000 tokens |
| Parameters | — | — | 27B (dense) | — |
| Modality | text, vision | text, vision | text, vision, video | text, vision, audio |
| License | proprietary | proprietary | Apache-2.0 | proprietary |
| Source | proprietary | proprietary | open weights | proprietary |
| Description | Reasoning-focused model in the o-series. | Fast, cost-effective Claude model. | 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. | OpenAI's flagship general-purpose model. Superseded by GPT-5.5 in April 2026. |
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