Compare / head-to-head
GPT-5vsGPT-5.1
GPT-5 leads 4 of 5 shared benchmarks. Both list the same combined token price. Both offer a 400K-token context window.
Benchmarks from cited public sources; pricing from official pages; status from official provider feeds.
Shared benchmarks
4 – 1
GPT-5 leads
Cheaper per token
Tie
list price, input + output
Larger context
Tie
both 400K tokens
Provider uptime (30d)
94.2446%
OpenAI
GPT-5
OpenAI · released 2025-08-07
textvision
Quality
Benchmark matrix
5 shared · 3 only GPT-5 · 1 only GPT-5.1| Benchmark | GPT-5 | GPT-5.1 | Δ | Edge |
|---|---|---|---|---|
| Reported by both · 5 | ||||
| GPQA Diamond | 86.2% ↗epoch | 87.6% ↗epoch | -1.4 pt | GPT-5.1 |
| AIME 2025 | 94.6% ↗ | 94.2% ↗matharena ⚠ | +0.4 pt | GPT-5 |
| OTIS Mock AIME 2024-2025 (Epoch AI run) | 91.4% ↗epoch | 88.6% ↗epoch | +2.8 pt | GPT-5 |
| SimpleQA Verified | 50.1% ↗epoch | 48% ↗epoch | +2.1 pt | GPT-5 |
| SWE-bench Verified (Epoch AI run) | 73.6% ↗epoch | 68% ↗epoch | +5.6 pt | GPT-5 |
| Only GPT-5 reports · 3 | ||||
| SWE-bench Verified | 74.9% ↗ | not reported | — | — |
| FrontierMath Tier 4 v2 (Epoch AI run) | 22% ↗epoch | not reported | — | — |
| FrontierMath Tiers 1-3 v2 (Epoch AI run) | 55.4% ↗epoch | not reported | — | — |
| Only GPT-5.1 reports · 1 | ||||
| LMArena Elo | not reported | 1422.6 ↗ | — | — |
Scores tagged "epoch" or "matharena" are independent runs, used only where the lab has not published its own; ⚠ marks rows MathArena flags as released after the competition. Higher is better on every row. Δ is GPT-5 minus GPT-5.1 in the benchmark's own unit. "Not reported" means the lab has not published that figure; it is not a zero. ↗ opens the source.
Specs & pricing
Side by side
Official pricing pages and model cards| Spec | GPT-5 | GPT-5.1 | Edge |
|---|---|---|---|
| Context window | 400K tokens | 400K tokens | Tie |
| Max output | 128K tokens | 128K tokens | Tie |
| Input price / 1M | $1.25 ↗ | $1.25 ↗ | Tie |
| Output price / 1M | $10 ↗ | $10 ↗ | Tie |
| Cached input / 1M | $0.125 ↗ | $0.125 ↗ | Tie |
| Input + output / 1M Lower is cheaper. List prices; batch, tool and regional fees excluded. | $11.25 | $11.25 | Tie |
| Modalities | text · vision | text · vision | Tie |
| Released | 2025-08-07 | 2025-11-13 | — |
| Cited benchmark scores | 9 | 6 | — |
Reliability
OpenAI status
Last 60 days · refreshed daily on this page · live on /statusMore matchups
GPT-5 vs …
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GPT-5.1 vs …
Models sharing the most benchmarksBuilt by Respan
Which one wins on your data?
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