LLMAPI only
GPT-5.2
OpenAI
Updated May 21, 2026 · Benchmarks via Artificial Analysis, specs & pricing via OpenRouter · Methodology · Report an error
Superseded by GPT-5.4
Specifications
- Type
- LLM
- Access
- API only
- Released
- December 11, 2025
- License
- Proprietary
- Context window
- 400,000 tokens
- Output speed
- 73 tok/s
- Latency (TTFT)
- 0.69s
- Input
- Text, Image
- Output
- Text
- API pricing
- $1.75 in · $14.00 out / 1M tokens
Capabilities
Function callingStructured outputWeb search
Benchmarks
Reasoning
| GPQA Diamond | 92.4 |
| ARC-AGI-2 | 52.9 |
Coding
Math
| AIME 2025 | 100 |
General
| MMLU-Pro | 87.4 |
| Humanity’s Last Exam | 35.4 |
Our take
Reasoning-focused step up that posted a perfect AIME 2025 and a big ARC-AGI-2 jump, shipping in Instant, Thinking, and Pro flavors.