Data points: 102
The readout for Claude Opus 4.6 and GPT-OSS, before the detailed comparison sheet.
Decision read
GPT-OSS
GPT-OSS currently has the stronger profile, with verified wins split 1 to 5.
Evidence depth
102 data points
Includes 8 benchmark rows, 4 audit samples, and 8 provider examples.
Selection signal
Start with GPT-OSS
The charts below split 20 high-signal samples across speed, scores, and audit health.
Model compare Claude Opus 4.6 vs GPT-OSSclaude-opus-4-6-vs-gpt-oss | Model A Claude Opus 4.6 | Model B GPT-OSS |
|---|---|---|
| Overall leader | Contender | Leading |
| Verified metric wins | 1 wins | 5 wins |
| Where it leads | Provider coverage | Cheapest input price, Average speed, First-token latency, Free providers, Recent tests |
| Model metadata | Claude Opus 4.6 exposes 1M tokens; notable signals: Text input, Image input, File input, Text output. | GPT-OSS exposes 131.1K tokens; notable signals: Text input, Text output, Tool calling, Reasoning. |
| Developer | Anthropic | No data |
| Context window | 1M tokens | 131.1K tokens |
| Max output | 128K tokens | 131.1K tokens |
| Released | Apr 2026 | Aug 2025 |
| Modalities | Input TextImageFile Output Text | Input Text Output Text |
| Features | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning | Text inputText outputTool callingReasoning |
| Parameters | No data | 120B |
| Tokenizer | Claude | GPT |
| Knowledge cutoff | No data | 2024-06-30 |
| OpenRouter ID | anthropic/claude-opus-4.6-fast | openai/gpt-oss-120b:free |
| References | No data | No data |
Third-party benchmark profile synced into LMSpeed; only metrics available for both models are shown.
| Metric | Claude Opus 4.6 | GPT-OSS |
|---|---|---|
| Output price | $25.00/M#47 | $0.200/M#3 |
| Blended price | $10.00/M#68 | $0.095/M#4 |
| Input price | $5.00/M#41 | $0.060/M#4 |
| Output speed | 44.9 tok/s#96 | 243.2 tok/s#6 |
| Time to first token | 1.44 s#57 | 0.50 s#10 |
| SciCode | 45.7%#20 | 34.0%#79 |
| Time to first answer token | 1.44 s#34 | 8.72 s#58 |
| GPQA | 84.0%#38 | 61.1%#102 |
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | Claude Opus 4.6 | GPT-OSS |
|---|---|---|
VSLLMWinner: Claude Opus 4.6 | Claude Opus 4.6 claude-opus-4-6 Audit score 94 76100100100 | GPT-OSS gpt-oss-120b No audit yet |
Cuz AIWinner: Claude Opus 4.6 | Claude Opus 4.6 claude-opus-4-6 Audit score 89 56100100100 | GPT-OSS gpt-oss-20b No audit yet |
小水管 APIWinner: Claude Opus 4.6 | Claude Opus 4.6 claude-opus-4-6 Audit score 84 728480100 | GPT-OSS gpt-oss-120b No audit yet |
钠 APIWinner: Claude Opus 4.6 | Claude Opus 4.6 claude-opus-4-6 Audit score 80 668470100 | GPT-OSS gpt-oss-120b-medium No audit yet |
Speed aggregates and input/output pricing share each provider row for real API selection and migration cost checks.
| Provider | Claude Opus 4.6 | GPT-OSS |
|---|---|---|
OpenRouter40 tests | Claude Opus 4.6 speed / latency N/A / N/A input / output No data | GPT-OSS speed / latency 41 tok/s / 2851ms input / output No data |
素墨API40 tests | Claude Opus 4.6 speed / latency 47 tok/s / 2344ms input / output No data | GPT-OSS speed / latency 347 tok/s / 2670ms input / output No data |
钠 API40 tests | Claude Opus 4.6 speed / latency 42 tok/s / 2282ms input / output No data | GPT-OSS speed / latency 908 tok/s / 3109ms input / output No data |
Rnglg2 API35 tests | Claude Opus 4.6 speed / latency 57 tok/s / 3926ms input / output No data | GPT-OSS speed / latency 338 tok/s / 2317ms input / output No data |
玄黄15 tests | Claude Opus 4.6 speed / latency 43 tok/s / 1654ms input / output No data | GPT-OSS speed / latency 1020 tok/s / 823ms input / output No data |
Claude Opus 4.6 claude-opus-4.6 speed / latency No data input / output $0/M / $0/M | GPT-OSS openai/gpt-oss-120b speed / latency No data input / output $0.039/M / $0.190/M | |
Claude Opus 4.6 claude-opus-4-6 speed / latency No data input / output $0/M / $0/M | GPT-OSS gpt-oss-20b speed / latency No data input / output $0/M / $0/M | |
Claude Opus 4.6 claude-opus-4-6 speed / latency No data input / output $3.00/M / $15.00/M | GPT-OSS openai/gpt-oss-20b:free speed / latency No data input / output $0.0050/M / $0.0050/M |
This report only uses LMSpeed data for Claude Opus 4.6 and GPT-OSS: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Guidance | Claude Opus 4.6 | GPT-OSS |
|---|---|---|
| When to choose each model | Claude Opus 4.6 Claude Opus 4.6 is stronger when you prioritize Provider coverage. | GPT-OSS GPT-OSS is stronger when you prioritize Cheapest input price, Average speed, First-token latency, Free providers, Recent tests. |
TL;DR: GPT-OSS leads across 102 verifiable data points, including pricing, speed, latency, benchmarks, and provider examples.
Continue from Claude Opus 4.6 vs GPT-OSS into nearby model comparisons with enough verified LMSpeed data.
Rankings are based on community-submitted tests and periodic health probes. Advisory only, not official data.
