Data points: 89
Model compare
The readout for Claude Opus 4.6 and GPT-5.1 Codex Mini, before the detailed comparison sheet.
Weighted outcome: Claude Opus 4.6. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
Decision read
Claude Opus 4.6
Claude Opus 4.6 has the higher weighted result; Model A / B score 92 to 8.
Evidence depth
89 data points
Includes 10 benchmark rows, 1 audit samples, and 7 provider examples.
Selection signal
Start with Claude Opus 4.6
The charts below split 18 high-signal samples across speed, scores, and audit health.
Switch either side of this report to compare another model with the same LMSpeed data pipeline.
Select a different model to open a new comparison URL.
This report only uses LMSpeed data for Claude Opus 4.6 and GPT-5.1 Codex Mini: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Model compare | Claude Opus 4.6 | GPT-5.1 Codex Mini |
|---|---|---|
| Overall leader | Leading | Contender |
| Weighted overall score | 92.0 pts | 8.0 pts |
| Benchmark category leads | 3 categories | 0 categories |
| Operational advantages | Cheapest input price, Free providers, Provider coverage | Average speed, First-token latency |
| Context window | 1M tokens | 400K tokens |
| Max output | 128K tokens | 100K tokens |
| Modalities | Input TextImageFile Output Text |
The overall result weights benchmark capability categories at 80% and price, API speed/latency, and availability at 20%. Recent test volume does not affect the winner, and missing benchmark categories are excluded.
| Model compare | Claude Opus 4.6 | GPT-5.1 Codex Mini |
|---|---|---|
| Developer | Anthropic | OpenAI |
| Released | Feb 2026 | Nov 2025 |
| Parameters | No data | No data |
| Tokenizer | Claude | GPT |
| Knowledge cutoff | No data | No data |
| OpenRouter ID | anthropic/claude-opus-4.6 | openai/gpt-5.1-codex-mini |
| References | No data | No data |
This report only uses LMSpeed data for Claude Opus 4.6 and GPT-5.1 Codex Mini: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
Claude Opus 4.6
Claude Opus 4.6 is stronger in benchmark categories (Coding, Reasoning, Math) and operational dimensions (Cheapest input price, Free providers, Provider coverage).
GPT-5.1 Codex Mini
GPT-5.1 Codex Mini has these operational advantages: Average speed, First-token latency.
Third-party benchmark profile synced into LMSpeed; only metrics available for both models are shown.
Compare benchmark category scores on a 0-100 scale. Select a category to inspect the gap.
Avg. score
Claude Opus 4.6
53.4
Avg. score
GPT-5.1 Codex Mini
54.7
Claude Opus 4.6
Claude Opus 4.6 leads by 2.4
Claude Opus 4.6 leads by 0.6
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
Claude Opus 4.6
44.7 tok/s
Rank #120/139 · confidence 4
GPT-5.1 Codex Mini
winner209.2 tok/s
Rank #15/139 · confidence 4
Claude Opus 4.6
winner2.00 s
Rank #55/139 · confidence 4
GPT-5.1 Codex Mini
3.84 s
Rank #59/139 · confidence 4
Claude Opus 4.6
winner2.00 s
Rank #99/139 · confidence 4
GPT-5.1 Codex Mini
3.84 s
Rank #106/139 · confidence 4
Claude Opus 4.6
$5.00/M
Rank #147/163 · confidence 4
GPT-5.1 Codex Mini
winner$0.250/M
Rank #37/163 · confidence 4
Claude Opus 4.6
$10.00/M
Rank #148/163 · confidence 4
GPT-5.1 Codex Mini
winner$0.688/M
Rank #54/163 · confidence 4
Claude Opus 4.6
$25.00/M
Rank #148/163 · confidence 4
GPT-5.1 Codex Mini
winner$2.00/M
Rank #61/163 · confidence 4
Claude Opus 4.6
82.0%
Rank #47/125 · confidence 3 · eval date 2026-02-01
GPT-5.1 Codex Mini
82.0%
Rank #47/125 · confidence 4
Claude Opus 4.6
winner84.0%
Rank #52/187 · confidence 4
GPT-5.1 Codex Mini
81.3%
Rank #69/187 · confidence 4
Claude Opus 4.6
winner18.6%
Rank #61/186 · confidence 4
GPT-5.1 Codex Mini
16.9%
Rank #65/186 · confidence 4
Claude Opus 4.6
winner45.7%
Rank #32/184 · confidence 4
GPT-5.1 Codex Mini
42.6%
Rank #45/184 · confidence 4
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 Mini |
|---|---|---|
Winner: Claude Opus 4.6 | Claude Opus 4.6 claude-opus-4-6 Audit score 97 10010010088 | GPT-5.1 Codex Mini gpt-5.1-codex-mini 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 Mini |
|---|---|---|
20 tests | Claude Opus 4.6 speed / latency 57 tok/s / 3926ms input / output No data | GPT-5.1 Codex Mini speed / latency 199 tok/s / 1905ms input / output No data |
20 tests | Claude Opus 4.6 speed / latency 42 tok/s / 2282ms input / output No data | GPT-5.1 Codex Mini speed / latency N/A / N/A input / output No data |
7 tests | Claude Opus 4.6 speed / latency 39 tok/s / 9397ms input / output No data | GPT-5.1 Codex Mini speed / latency N/A / N/A input / output No data |
5 tests | Claude Opus 4.6 speed / latency 26 tok/s / 1130ms input / output No data | GPT-5.1 Codex Mini speed / latency N/A / N/A input / output No data |
5 tests | Claude Opus 4.6 speed / latency 43 tok/s / 2285ms input / output No data | GPT-5.1 Codex Mini 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/request | GPT-5.1 Codex Mini gpt-5.1-codex-mini-2025-11-13 speed / latency No data input / output $0/request | |
Claude Opus 4.6 claude-opus-4-6-c speed / latency No data input / output $0.0082/request | GPT-5.1 Codex Mini gpt-5.1-codex-mini-2025-11-13 speed / latency No data input / output $1.51/M |
Weighted outcome: Claude Opus 4.6. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
Input
Output
| Features | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning | Text inputImage inputText outputTool callingStructured outputsJSON modeReasoning |
|---|
Claude Opus 4.6
Claude Opus 4.6 leads by 3.1
Claude Opus 4.6
Claude Opus 4.6
Claude Opus 4.6
