GPT-5 High vs GPT-5.1 Medium: Specs & Benchmark Comparison
| Characteristic | GPT-5 High | GPT-5.1 Medium |
|---|---|---|
| Company | OpenAI | OpenAI |
| Release Date | August 6, 2025 | November 11, 2025 |
| Parameters | — | — |
| Multimodal | Yes | Yes |
| Context (input) | 400K | 256K |
| Context (output) | 128K | 64K |
| Input Price / 1M | $2.00 | $1.00 |
| Output Price / 1M | $8.00 | $4.00 |
| Average Score | 0.9 | 1.0 |
| Benchmarks | ||
| AIME 2025 | 0.9 | 1.0 |
Visual Benchmark Comparison
GPT-5 High
GPT-5.1 Medium
AIME 20250.9 vs 1.0
0.9
1.0
Verdict
GPT-5.1 Medium leads in 2 out of 4 comparison categories.
Overall Performance
Both models show comparable average scores: GPT-5 High — 0.9, GPT-5.1 Medium — 1.0.
API Cost
GPT-5.1 Medium is 2.0x cheaper: input $1.00/1M vs $2.00/1M tokens.
Context Window
GPT-5 High supports a larger context: 400K vs 256K tokens.
Recency
GPT-5.1 Medium is newer: released 11/11/2025 vs 8/6/2025.
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The GPT-5 High and GPT-5.1 Medium comparison is updated for 2026. Data includes benchmark results, API pricing, context window size and other specifications. For more detailed information, visit the GPT-5 High or GPT-5.1 Medium page. See also the complete list of AI model comparisons.