GPT-5 Mini is a compact version of GPT-5, designed to handle lighter-weight reasoning tasks. It provides the same instruction-following and safety-tuning benefits as GPT-5, but with reduced latency and cost....
OpenAI: GPT-5 Mini — OpenAI. Context window 400,000 tokens. API pricing (per 1M tokens): Input $0.25, Output $2. License: Proprietary. LMArena 1,373. GPQA Diamond 75%.
| Provider | OpenAI |
|---|---|
| API model ID | openai/gpt-5-mini |
| Tier | Frontier |
| Context window | 400,000 tokens |
| Max output | 128,000 tokens |
| License | Proprietary |
| API pricing (per 1M tokens) · Input | $0.25 |
| API pricing (per 1M tokens) · Output | $2 |
| LMArena | 1,373 (gpt-5-mini-high) |
| GPQA Diamond | 75% |
LMArena (CC-BY 4.0, best reasoning setting, 2026-10-02) · GPQA Diamond: Epoch AI (CC-BY 4.0)
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