Model Comparison

GPT-5.2 vs GPT-5 miniWhich is better in 2026?

GPT-5.2 significantly outperforms across most benchmarks. GPT-5 mini is 7.0x cheaper per token.

Verdict: GPT-5.2 vs GPT-5 mini — which is better?

GPT-5.2 (by OpenAI) and GPT-5 mini (by OpenAI) are two of the AI models people compare most. Here is how they stack up on benchmarks, price and capabilities, and which one to pick in 2026.

GPT-5.2 outperforms in 5 benchmarks (AIME 2025, FrontierMath, GPQA, HMMT 2025, Humanity's Last Exam), while GPT-5 mini is better at 0 benchmarks. GPT-5.2 significantly outperforms across most benchmarks.

On price, GPT-5 mini is roughly 7.0x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Choose GPT-5.2 if…

  • you want the strongest raw capability — it leads on 5 of 5 shared benchmarks
  • you want the most recent training data — it shipped Dec 2025

Choose GPT-5 mini if…

  • cost matters — it's about 7.0x cheaper per token
AI Model Comparison Table
Feature
OpenAI
GPT-5.2
OpenAI
GPT-5 mini
OpenAI
o3

FAQ

Common questions about GPT-5.2 vs GPT-5 mini.

Which is better, GPT-5.2 or GPT-5 mini?

GPT-5.2 significantly outperforms across most benchmarks. GPT-5.2 is made by OpenAI and GPT-5 mini is made by OpenAI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does GPT-5.2 compare to GPT-5 mini in benchmarks?

GPT-5.2 scores AIME 2025: 100.0%, HMMT 2025: 99.4%, Tau2 Telecom: 98.7%, Graphwalks BFS <128k: 94.0%, GPQA: 92.4%. GPT-5 mini scores AIME 2025: 91.1%, HMMT 2025: 87.8%, GPQA: 82.3%, FrontierMath: 22.1%, Humanity's Last Exam: 16.7%.

Is GPT-5.2 cheaper than GPT-5 mini?

GPT-5 mini is 7.0x cheaper for input tokens. GPT-5.2 costs $1.75/M input and $14.00/M output via openai. GPT-5 mini costs $0.25/M input and $2.00/M output via openai.

What are the context window sizes for GPT-5.2 and GPT-5 mini?

GPT-5.2 supports 400K tokens and GPT-5 mini supports 400K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between GPT-5.2 and GPT-5 mini?

Key differences include input pricing ($1.75 vs $0.25/M). See the full comparison above for benchmark-by-benchmark results.

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