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 Claude 4.5 HaikuAnthropic |  DeepSeek-V4-ProDeepSeek |  GPT-5OpenAI | |
|---|---|---|---|
| Vendor | Anthropic | DeepSeek | OpenAI |
| Family | Claude | DeepSeek | GPT |
| Release date | 2025-10-01 | 2026-04-22 | 2025-08-07 |
| Context window | 200,000 tokens | 1,000,000 tokens | 400,000 tokens |
| Parameters | — | 1.6T (49B active) | — |
| Modality | text, vision | text | text, vision, audio |
| License | proprietary | MIT | proprietary |
| Source | proprietary | open weights | proprietary |
| Description | Fast, cost-effective Claude model. | DeepSeek's flagship open-weight MoE. 1.6T parameters with 49B activated, 1M-token context, and a hybrid attention scheme (CSA + HCA) that delivers long-context inference at ~27% of V3.2's FLOPs. | OpenAI's flagship general-purpose model. Superseded by GPT-5.5 in April 2026. |
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