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 Gemini 3.5 | Gemini 2.5 Flash |  o3OpenAI | GPT-5 OpenAI | |
|---|---|---|---|---|
| Vendor | OpenAI | OpenAI | ||
| Family | Gemini | Gemini | o-series | GPT |
| Release date | 2026-05-20 | 2025-06-17 | 2025-04-16 | 2025-08-07 |
| Context window | 2,000,000 tokens | 1,000,000 tokens | 200,000 tokens | 400,000 tokens |
| Parameters | — | — | — | — |
| Modality | text, vision, audio, video | text, vision, audio | text, vision | text, vision, audio |
| License | proprietary | proprietary | proprietary | proprietary |
| Source | proprietary | proprietary | proprietary | proprietary |
| Description | Google DeepMind's next-gen Gemini — positioned as "frontier intelligence with action". Built for complex agentic workflows. Announced at Google I/O 2026. | Google's cost-and-latency-optimized Gemini 2.5 variant. Generally available June 2025 — designed for high-throughput agentic workflows with sub-second first-token latency. | Reasoning-focused model in the o-series. | OpenAI's flagship general-purpose model. Superseded by GPT-5.5 in April 2026. |
| Links | ||||
| Benchmarks | ||||
| MMLU-Pro | 88.9% | — | — | 85.1% |
| GPQA-D | 91.2% | — | 87.7% | 87.3% |
| HumanEval | — | — | — | 95.2% |
| Aider | — | — | — | 85.4% |
| AIME-25 | 96.1% | — | 88.9% | 91.0% |
| LiveCB | — | — | — | 74.5% |
| MMMU | 86.0% | — | — | 74.1% |
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Claude 4.8 Opusmax
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Mistral Large 2maxMax 4 models. Remove one to add another.