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 Gemini 2.5 Flash |  o3OpenAI | GPT-5.6 Sol OpenAI | |
|---|---|---|---|
| Vendor | OpenAI | OpenAI | |
| Family | Gemini | o-series | GPT |
| Release date | 2025-06-17 | 2025-04-16 | 2026-06-26 |
| Context window | 1,000,000 tokens | 200,000 tokens | — |
| Parameters | — | — | — |
| Modality | text, vision, audio | text, vision | text, vision, audio |
| License | proprietary | proprietary | proprietary |
| Source | proprietary | proprietary | proprietary |
| Description | 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. | Flagship of OpenAI's GPT-5.6 three-model suite (Sol / Terra / Luna), released as a limited preview. Strong gains in coding, cybersecurity, biology, and long-horizon agentic work. Pricing: $5 / $30 per million input/output tokens. |
| Links | |||
| Benchmarks | |||
| GPQA-D | — | 87.7% | — |
| AIME-25 | — | 88.9% | — |
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GPT-5.6 Sol✓
Claude 4.8 Opus+
Qwen3.7-Max+Gemini 3.5 Flash+Gemini 3.5+Gemini Omni+GPT-5.5+
DeepSeek-V4-Flash+Gemini 3 Pro+DeepSeek-V4-Pro+Qwen3.6-27B+Claude 4.7 Opus+Claude 4.6 Sonnet+Claude 4.5 Haiku+DeepSeek-V3.1+GPT-5 Pro+GPT-5+
Grok 4+Gemini 2.5 Flash✓Qwen3 235B+o3✓GPT-4.1+
Llama 4 Scout+Llama 4 Maverick+Gemini 2.5 Pro+DeepSeek-R1+
Mistral Large 2+