Model comparison
GPT-5.2 vs GPT-5.1
OpenAIGPT-5.2
- Input
- $1.75 / 1M tokens
- Output
- $14.00 / 1M tokens
- Context
- 400K
- Released
- 2025-12-11
- Input
- $1.25 / 1M tokens
- Output
- $10.00 / 1M tokens
- Context
- 400K
- Released
- 2025-11-12
Short answer
GPT-5.1 is cheaper on input tokens ($1.3 vs $1.8 per 1M, 1.4×).
Specs and pricing side by side
| Spec | GPT-5.2 | GPT-5.1 |
|---|---|---|
| Maker | OpenAI | OpenAIsame |
| Released | 2025-12-11 | 2025-11-12 |
| Context window | 400K | 400Ksame |
| Max output | 128K | 128Ksame |
| Input price | $1.75 / 1M tokens | $1.25 / 1M tokens |
| Output price | $14.00 / 1M tokens | $10.00 / 1M tokens |
| Parameters | Not disclosed by OpenAI | Undisclosed |
| License | Proprietary | Proprietarysame |
| Weights | API only | API onlysame |
| Modalities | Text, Vision | Text, Visionsame |
| Knowledge cutoff | August 31, 2025 | September 30, 2024 |
Benchmarks both models report
These two models have no benchmark in common in our registry, so there is no like-for-like score to compare. See each model’s own results: GPT-5.2, GPT-5.1.
Which one should you pick?
Pick GPT-5.2 if…
- Your use case is: long-running autonomous agents and multi-step workflows that need a large context window and reliable tool use.
Pick GPT-5.1 if…
- Cost matters: input tokens cost 1.4× less ($1.3 vs $1.8 per 1M).
- Your use case is: everyday conversational assistance and writing where a warmer, faster default tone matters.
FAQ
Which is better, GPT-5.2 or GPT-5.1?
GPT-5.1 is cheaper on input tokens ($1.3 vs $1.8 per 1M, 1.4×). The better pick depends on whether you value benchmark scores, price per token, context length or openness for your workload.
How much cheaper is GPT-5.1?
GPT-5.2: $1.75 / 1M tokens input, $14.00 / 1M tokens output. GPT-5.1: $1.25 / 1M tokens input, $10.00 / 1M tokens output (list API prices as published by each maker).
What are the context windows of GPT-5.2 and GPT-5.1?
GPT-5.2 offers 400K with up to 128K output; GPT-5.1 offers 400K with up to 128K output.
Is GPT-5.2 newer than GPT-5.1?
GPT-5.2 was released 2025-12-11; GPT-5.1 was released 2025-11-12.