Compare / head-to-head
GPT-5.6 SolvsGPT-5 Pro
GPT-5.6 Sol leads 3 of 3 shared benchmarks. GPT-5.6 Sol is 5.6x cheaper per token. GPT-5.6 Sol has the larger context window (1.1M tokens).
Benchmarks from cited public sources; pricing from official pages; status from official provider feeds.
Shared benchmarks
3 – 0
GPT-5.6 Sol leads
Cheaper per token
GPT-5.6 Sol
5.6x cheaper, input + output
Larger context
GPT-5.6 Sol
1.1M tokens
Provider uptime (30d)
95.4286%
OpenAI
GPT-5.6 Sol
OpenAI · released 2026-07-09
textvision
Quality
Benchmark matrix
3 shared · 4 only GPT-5.6 Sol · 0 only GPT-5 Pro| Benchmark | GPT-5.6 Sol | GPT-5 Pro | Δ | Edge |
|---|---|---|---|---|
| Reported by both · 3 | ||||
| GPQA Diamond | 94.6% ↗ | 88.4% ↗ | +6.2 pt | GPT-5.6 Sol |
| FrontierMath Tier 4 v2 (Epoch AI run) | 82.9% ↗epoch | 19.5% ↗epoch | +63.4 pt | GPT-5.6 Sol |
| FrontierMath Tiers 1-3 v2 (Epoch AI run) | 89.1% ↗epoch | 55.8% ↗epoch | +33.3 pt | GPT-5.6 Sol |
| Only GPT-5.6 Sol reports · 4 | ||||
| DeepSWE v1.1 | 72.7% ↗ | not reported | — | — |
| OTIS Mock AIME 2024-2025 (Epoch AI run) | 100% ↗epoch | not reported | — | — |
| SimpleQA Verified | 69.7% ↗epoch | not reported | — | — |
| SWE-Bench Pro | 64.6% ↗ | not reported | — | — |
| Only GPT-5 Pro reports · 0 | ||||
| GPT-5 Pro reports nothing GPT-5.6 Sol does not. | ||||
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-5.6 Sol minus GPT-5 Pro 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-5.6 Sol | GPT-5 Pro | Edge |
|---|---|---|---|
| Context window | 1.1M tokens | 400K tokens | GPT-5.6 Sol |
| Max output | 128K tokens | 272K tokens | GPT-5 Pro |
| Input price / 1M | $4 ↗ | $15 ↗ | GPT-5.6 Sol |
| Output price / 1M | $20 ↗ | $120 ↗ | GPT-5.6 Sol |
| Cached input / 1M | $0.4 ↗ | — | — |
| Input + output / 1M Lower is cheaper. List prices; batch, tool and regional fees excluded. | $24 | $135 | GPT-5.6 Sol |
| Modalities | text · vision | text · vision | Tie |
| Released | 2026-07-09 | 2025-10-06 | — |
| Cited benchmark scores | 8 | 3 | — |
Reliability
OpenAI status
Last 60 days · refreshed daily on this page · live on /statusMore matchups
GPT-5.6 Sol vs …
Models sharing the most benchmarksMore matchups
GPT-5 Pro vs …
Models sharing the most benchmarksBuilt by Respan
Which one wins on your data?
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