Compare / head-to-head
Claude Sonnet 5vsgpt-oss-120b
Claude Sonnet 5 leads 3 of 3 shared benchmarks. Claude Sonnet 5 has the larger context window (1M tokens).
Benchmarks from cited public sources; pricing from official pages; status from official provider feeds.
Shared benchmarks
3 – 0
Claude Sonnet 5 leads
Cheaper per token
—
list price, input + output
Larger context
Claude Sonnet 5
1M tokens
Provider uptime (30d)
100% · 94.2446%
Anthropic · OpenAI
Claude Sonnet 5
Anthropic · released 2026-06-30
textvision
gpt-oss-120b
OpenAI · released 2025-08-05
text
- Context
- 131K
- Max out
- 131K
- Input /1M
- —
- Output /1M
- —
- Cached /1M
- —
- Scores
- 6 · 5 core
Quality
Benchmark matrix
3 shared · 5 only Claude Sonnet 5 · 2 only gpt-oss-120b| Benchmark | Claude Sonnet 5 | gpt-oss-120b | Δ | Edge |
|---|---|---|---|---|
| Reported by both · 3 | ||||
| SWE-bench Verified | 85.2% ↗ | 62.4% ↗ | +22.8 pt | Claude Sonnet 5 |
| GPQA Diamond | 90.5% ↗epoch | 80.1% ↗ | +10.4 pt | Claude Sonnet 5 |
| OTIS Mock AIME 2024-2025 (Epoch AI run) | 94.7% ↗epoch | 88.9% ↗epoch | +5.8 pt | Claude Sonnet 5 |
| Only Claude Sonnet 5 reports · 5 | ||||
| Humanity's Last Exam (no tools) | 43.2% ↗ | not reported | — | — |
| FrontierMath Tier 4 v2 (Epoch AI run) | 29.3% ↗epoch | not reported | — | — |
| FrontierMath Tiers 1-3 v2 (Epoch AI run) | 65.6% ↗epoch | not reported | — | — |
| Humanity's Last Exam (with tools) | 57.4% ↗ | not reported | — | — |
| SimpleQA Verified | 33.7% ↗epoch | not reported | — | — |
| Only gpt-oss-120b reports · 2 | ||||
| AIME 2025 | not reported | 90% ↗matharena ⚠ | — | — |
| LMArena Elo | not reported | 1365.9 ↗ | — | — |
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-oss-120b 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-oss-120b | Edge |
|---|---|---|---|
| Context window | 1M tokens | 131K tokens | Claude Sonnet 5 |
| Max output | 128K tokens | 131K tokens | gpt-oss-120b |
| Input price / 1M | $2 ↗ | — | — |
| Output price / 1M | $10 ↗ | — | — |
| Cached input / 1M | $0.2 ↗ | — | — |
| Input + output / 1M Lower is cheaper. List prices; batch, tool and regional fees excluded. | $12 | — | — |
| Modalities | text · vision | text | Claude Sonnet 5 |
| Released | 2026-06-30 | 2025-08-05 | — |
| Cited benchmark scores | 8 | 6 | — |
Reliability
Provider status
Last 60 days · refreshed daily on this page · live on /statusMore matchups
Claude Sonnet 5 vs …
Models sharing the most benchmarksMore matchups
gpt-oss-120b vs …
Models sharing the most benchmarksBuilt by Respan
Which one wins on your data?
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