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 GPT-5OpenAI |  DeepSeek-V4-ProDeepSeek | DeepSeek-V4-Flash DeepSeek |  Claude 4.6 SonnetAnthropic | |
|---|---|---|---|---|
| Vendor | OpenAI | DeepSeek | DeepSeek | Anthropic |
| Family | GPT | DeepSeek | DeepSeek | Claude |
| Release date | 2025-08-07 | 2026-04-22 | 2026-04-22 | — |
| Context window | 400,000 tokens | 1,000,000 tokens | 1,000,000 tokens | 200,000 tokens |
| Parameters | — | 1.6T (49B active) | 284B (13B active) | — |
| Modality | text, vision, audio | text | text | text, vision |
| License | proprietary | MIT | MIT | proprietary |
| Source | proprietary | open weights | open weights | proprietary |
| Description | OpenAI's flagship general-purpose model. Superseded by GPT-5.5 in April 2026. | 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. | Smaller, faster sibling to DeepSeek-V4-Pro. Same 1M context window with a much lighter 284B / 13B-active MoE. | — |
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Mistral Large 2maxMax 4 models. Remove one to add another.