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 GPT-5 ProOpenAI |  Gemini 3.5 Flash |  DeepSeek-R1DeepSeek | DeepSeek-V4-Flash DeepSeek | |
|---|---|---|---|---|
| Vendor | OpenAI | DeepSeek | DeepSeek | |
| Family | GPT | Gemini | DeepSeek | DeepSeek |
| Release date | 2025-08-07 | 2026-05-20 | 2025-01-20 | 2026-04-22 |
| Context window | 400,000 tokens | — | 128,000 tokens | 1,000,000 tokens |
| Parameters | — | — | 671B | 284B (13B active) |
| Modality | text, vision, audio | text, vision, audio | text | text |
| License | proprietary | proprietary | MIT | MIT |
| Source | proprietary | proprietary | open weights | open weights |
| Description | Higher-reasoning variant of GPT-5, used for harder scientific and research tasks (e.g., immunology breakthroughs at NIH). Same 400K context as GPT-5; trades latency for depth. | Fast, low-cost tier of the Gemini 3.5 family announced at Google I/O 2026. June 2026 update added native computer-use capability, moving Flash from generation to agentic task execution. | Reasoning-focused open-weight model. | Smaller, faster sibling to DeepSeek-V4-Pro. Same 1M context window with a much lighter 284B / 13B-active MoE. |
| Links | ||||
| Benchmarks | ||||
| AIME-25 | — | — | 79.8% | — |
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GPT-5.6 Solmax
Claude 4.8 Opusmax
Qwen3.7-MaxmaxGemini 3.5 Flash✓Gemini 3.5maxGemini OmnimaxGPT-5.5maxDeepSeek-V4-Flash✓Gemini 3 PromaxDeepSeek-V4-PromaxQwen3.6-27BmaxClaude 4.7 OpusmaxClaude 4.6 SonnetmaxClaude 4.5 HaikumaxDeepSeek-V3.1maxGPT-5 Pro✓GPT-5max
Grok 4maxGemini 2.5 FlashmaxQwen3 235Bmaxo3maxGPT-4.1max
Llama 4 ScoutmaxLlama 4 MaverickmaxGemini 2.5 PromaxDeepSeek-R1✓
Mistral Large 2maxMax 4 models. Remove one to add another.