Compare / head-to-head
Claude Sonnet 5vsGPT-5.4 Pro
GPT-5.4 Pro leads 5 of 6 shared benchmarks. Claude Sonnet 5 is 17.5x cheaper per token. GPT-5.4 Pro has the larger context window (1.1M tokens).
Benchmarks from cited public sources; pricing from official pages; status from official provider feeds.
Shared benchmarks
1 – 5
GPT-5.4 Pro leads
Cheaper per token
Claude Sonnet 5
17.5x cheaper, input + output
Larger context
GPT-5.4 Pro
1.1M tokens
Provider uptime (30d)
100% · 95.4802%
Anthropic · OpenAI
Claude Sonnet 5
Anthropic · released 2026-06-30
textvision
GPT-5.4 Pro
OpenAI · released 2026-03-05
textvision
Quality
Benchmark matrix
6 shared · 2 only Claude Sonnet 5 · 6 only GPT-5.4 Pro| Benchmark | Claude Sonnet 5 | GPT-5.4 Pro | Δ | Edge |
|---|---|---|---|---|
| Reported by both · 6 | ||||
| GPQA Diamond | 90.5% ↗epoch | 94.4% ↗ | -3.9 pt | GPT-5.4 Pro |
| Humanity's Last Exam (no tools) | 43.2% ↗ | 42.7% ↗ | +0.5 pt | Claude Sonnet 5 |
| FrontierMath Tier 4 v2 (Epoch AI run) | 29.3% ↗epoch | 58.5% ↗epoch | -29.2 pt | GPT-5.4 Pro |
| FrontierMath Tiers 1-3 v2 (Epoch AI run) | 65.6% ↗epoch | 82.5% ↗epoch | -16.9 pt | GPT-5.4 Pro |
| Humanity's Last Exam (with tools) | 57.4% ↗ | 58.7% ↗ | -1.3 pt | GPT-5.4 Pro |
| SimpleQA Verified | 33.7% ↗epoch | 46.3% ↗epoch | -12.6 pt | GPT-5.4 Pro |
| Only Claude Sonnet 5 reports · 2 | ||||
| SWE-bench Verified | 85.2% ↗ | not reported | — | — |
| OTIS Mock AIME 2024-2025 (Epoch AI run) | 94.7% ↗epoch | not reported | — | — |
| Only GPT-5.4 Pro reports · 6 | ||||
| ARC-AGI-1 (Verified) | not reported | 94.5% ↗ | — | — |
| ARC-AGI-2 (Verified) | not reported | 83.3% ↗ | — | — |
| BrowseComp | not reported | 89.3% ↗ | — | — |
| FrontierMath Tier 1-3 | not reported | 50% ↗ | — | — |
| FrontierMath Tier 4 | not reported | 38% ↗ | — | — |
| GDPval (wins or ties) | not reported | 82% ↗ | — | — |
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 Claude Sonnet 5 minus GPT-5.4 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 | Claude Sonnet 5 | GPT-5.4 Pro | Edge |
|---|---|---|---|
| Context window | 1M tokens | 1.1M tokens | GPT-5.4 Pro |
| Max output | 128K tokens | 128K tokens | Tie |
| Input price / 1M | $2 ↗ | $30 ↗ | Claude Sonnet 5 |
| Output price / 1M | $10 ↗ | $180 ↗ | Claude Sonnet 5 |
| Cached input / 1M | $0.2 ↗ | — | — |
| Input + output / 1M Lower is cheaper. List prices; batch, tool and regional fees excluded. | $12 | $210 | Claude Sonnet 5 |
| Modalities | text · vision | text · vision | Tie |
| Released | 2026-06-30 | 2026-03-05 | — |
| Cited benchmark scores | 8 | 13 | — |
Reliability
Provider status
Last 60 days · refreshed daily on this page · live on /statusMore matchups
Claude Sonnet 5 vs …
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GPT-5.4 Pro vs …
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Which one wins on your data?
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