Data points: 88
The readout for Claude Opus 4.6 and GPT-5.1 Codex, before the detailed comparison sheet.
Decision read
Claude Opus 4.6
Claude Opus 4.6 currently has the stronger profile, with verified wins split 4 to 0.
Evidence depth
88 data points
Includes 8 benchmark rows, 2 audit samples, and 9 provider examples.
Selection signal
Start with Claude Opus 4.6
The charts below split 19 high-signal samples across speed, scores, and audit health.
Model compare Claude Opus 4.6 vs GPT-5.1 Codexclaude-opus-4-6-vs-gpt-5-1-codex | Model A Claude Opus 4.6 | Model B GPT-5.1 Codex |
|---|---|---|
| Overall leader | Leading | Contender |
| Verified metric wins | 4 wins | 0 wins |
| Where it leads | Cheapest input price, Free providers, Provider coverage, Recent tests | No data |
| Model metadata | Claude Opus 4.6 exposes 1M tokens; notable signals: Text input, Image input, File input, Text output. | GPT-5.1 Codex exposes 400K tokens; notable signals: Text input, Image input, Text output, Tool calling. |
| Developer | Anthropic | OpenAI |
| Context window | 1M tokens | 400K tokens |
| Max output | 128K tokens | 128K tokens |
| Released | Apr 2026 | Nov 2025 |
| Modalities | Input TextImageFile Output Text | Input TextImage Output Text |
| Features | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning | Text inputImage inputText outputTool callingStructured outputsJSON modeReasoning |
| Parameters | No data | No data |
| Tokenizer | Claude | GPT |
| Knowledge cutoff | No data | No data |
| OpenRouter ID | anthropic/claude-opus-4.6-fast | openai/gpt-5.1-codex |
| 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-5.1 Codex |
|---|---|---|
| Output speed | 44.9 tok/s#96 | 185.7 tok/s#15 |
| SciCode | 45.7%#20 | 40.2%#46 |
| GPQA | 84.0%#38 | 86.0%#26 |
| Input price | $5.00/M#41 | $1.25/M#30 |
| HLE | 18.6%#43 | 23.4%#33 |
| Time to first answer token | 1.44 s#34 | 4.25 s#48 |
| Output price | $25.00/M#47 | $10.00/M#41 |
| Time to first token | 1.44 s#57 | 4.25 s#80 |
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | Claude Opus 4.6 | GPT-5.1 Codex |
|---|---|---|
BUZZWinner: Claude Opus 4.6 | Claude Opus 4.6 claude-opus-4-6 Audit score 97 10010010088 | GPT-5.1 Codex gpt-5.1-codex No audit yet |
钠 APIWinner: Claude Opus 4.6 | Claude Opus 4.6 claude-opus-4-6 Audit score 80 668470100 | GPT-5.1 Codex gpt-5.1-codex 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-5.1 Codex |
|---|---|---|
钠 API20 tests | Claude Opus 4.6 speed / latency 42 tok/s / 2282ms input / output No data | GPT-5.1 Codex speed / latency N/A / N/A input / output No data |
Rnglg2 API15 tests | Claude Opus 4.6 speed / latency 57 tok/s / 3926ms input / output No data | GPT-5.1 Codex speed / latency N/A / N/A input / output No data |
发现AI7 tests | Claude Opus 4.6 speed / latency 39 tok/s / 9397ms input / output No data | GPT-5.1 Codex speed / latency N/A / N/A input / output No data |
Completions5 tests | Claude Opus 4.6 speed / latency 26 tok/s / 1130ms input / output No data | GPT-5.1 Codex speed / latency N/A / N/A input / output No data |
Cuz AI5 tests | Claude Opus 4.6 speed / latency 43 tok/s / 2285ms input / output No data | GPT-5.1 Codex speed / latency N/A / N/A input / output No data |
Claude Opus 4.6 claude-opus-4.6 speed / latency No data input / output $0/M / $0/M | GPT-5.1 Codex gpt-5.1-codex speed / latency No data input / output $1.07/M / $8.56/M | |
Claude Opus 4.6 claude-opus-4-6-thinking speed / latency No data input / output $0.060/M / $0.060/M | GPT-5.1 Codex gpt-5.1-codex speed / latency No data input / output $0.010/M / $0.010/M | |
Claude Opus 4.6 claude-opus-4-6 speed / latency No data input / output $0.068/M / $0.342/M | GPT-5.1 Codex gpt-5.1-codex-xhigh speed / latency No data input / output $0.017/M / $0.137/M | |
Claude Opus 4.6 claude-opus-4-6 speed / latency No data input / output $4.79/M / $23.97/M | GPT-5.1 Codex gpt-5.1-codex speed / latency No data input / output $0.019/M / $0.019/M |
This report only uses LMSpeed data for Claude Opus 4.6 and GPT-5.1 Codex: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Guidance | Claude Opus 4.6 | GPT-5.1 Codex |
|---|---|---|
| When to choose each model | Claude Opus 4.6 Claude Opus 4.6 is stronger when you prioritize Cheapest input price, Free providers, Provider coverage, Recent tests. | GPT-5.1 Codex GPT-5.1 Codex does not clearly lead on the verified metrics here, so check provider-specific pricing before choosing. |
TL;DR: Claude Opus 4.6 leads across 88 verifiable data points, including pricing, speed, latency, benchmarks, and provider examples.
Continue from Claude Opus 4.6 vs GPT-5.1 Codex 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.
