Data points: 81
Model compare
The readout for Claude Opus 4 and GPT-5.1, before the detailed comparison sheet.
Weighted outcome: Claude Opus 4. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
Decision read
Claude Opus 4
Claude Opus 4 has the higher weighted result; Model A / B score 53.3 to 46.7.
Evidence depth
81 data points
Includes 8 benchmark rows, 0 audit samples, and 8 provider examples.
Selection signal
Start with Claude Opus 4
The charts below split 16 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 and GPT-5.1: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Model compare | Claude Opus 4 | GPT-5.1 |
|---|---|---|
| Overall leader | Leading | Contender |
| Weighted overall score | 53.3 pts | 46.7 pts |
| Benchmark category leads | 2 categories | 1 categories |
| Operational advantages | No data | Cheapest input price, Average speed, First-token latency, Free providers, Provider coverage |
| Context window | 200K tokens | 400K tokens |
| Max output | 32K tokens | 128K tokens |
| Modalities | Input ImageTextFile 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 | GPT-5.1 |
|---|---|---|
| Developer | Anthropic | OpenAI |
| Released | May 2025 | Nov 2025 |
| Parameters | No data | No data |
| Tokenizer | Claude | GPT |
| Knowledge cutoff | 2025-01-31 | No data |
| OpenRouter ID | anthropic/claude-opus-4 | openai/gpt-5.1 |
| References | No data | No data |
This report only uses LMSpeed data for Claude Opus 4 and GPT-5.1: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
Claude Opus 4
Claude Opus 4 leads these benchmark categories: Coding, Math.
GPT-5.1
GPT-5.1 is stronger in benchmark categories (Reasoning) and operational dimensions (Cheapest input price, Average speed, First-token latency, Free providers, Provider coverage).
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
52.7
Avg. score
GPT-5.1
52
GPT-5.1
Claude Opus 4 leads by 2.4
GPT-5.1 leads by 0.8
GPT-5.1
Claude Opus 4 leads by 0.5
No data
No data
GPT-5.1
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
Claude Opus 4
$15.00/M
Rank #155/162 · confidence 4
GPT-5.1
winner$1.25/M
Rank #107/162 · confidence 4
Claude Opus 4
$30.00/M
Rank #156/162 · confidence 4
GPT-5.1
winner$3.44/M
Rank #117/162 · confidence 4
Claude Opus 4
$75.00/M
Rank #157/162 · confidence 4
GPT-5.1
winner$10.00/M
Rank #120/162 · confidence 4
Claude Opus 4
86.0%
Rank #20/125 · confidence 4
GPT-5.1
winner87.0%
Rank #12/125 · confidence 4
Claude Opus 4
70.1%
Rank #112/188 · confidence 4
GPT-5.1
winner87.3%
Rank #33/188 · confidence 4
Claude Opus 4
5.9%
Rank #129/187 · confidence 4
GPT-5.1
winner26.5%
Rank #40/187 · confidence 4
Claude Opus 4
54.2%
Rank #53/115 · confidence 4
GPT-5.1
winner86.8%
Rank #4/115 · confidence 4
Claude Opus 4
40.9%
Rank #59/185 · confidence 4
GPT-5.1
winner43.3%
Rank #42/185 · confidence 4
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | Claude Opus 4 | GPT-5.1 |
|---|---|---|
| No completed audits are available from shared providers yet. | ||
Speed aggregates and input/output pricing share each provider row for real API selection and migration cost checks.
| Provider | Claude Opus 4 | GPT-5.1 |
|---|---|---|
5 tests | Claude Opus 4 speed / latency N/A / N/A input / output No data | GPT-5.1 speed / latency 96 tok/s / 1862ms input / output No data |
0 tests | Claude Opus 4 speed / latency N/A / N/A input / output No data | GPT-5.1 speed / latency N/A / N/A input / output No data |
0 tests | Claude Opus 4 speed / latency N/A / N/A input / output No data | GPT-5.1 speed / latency N/A / N/A input / output No data |
0 tests | Claude Opus 4 speed / latency N/A / N/A input / output No data | GPT-5.1 speed / latency N/A / N/A input / output No data |
0 tests | Claude Opus 4 speed / latency N/A / N/A input / output No data | GPT-5.1 speed / latency N/A / N/A input / output No data |
Claude Opus 4 claude-opus-4-20250514 speed / latency No data input / output $0/request | GPT-5.1 gpt-5.1-all speed / latency No data input / output $0/request | |
Claude Opus 4 claude-opus-4-20250514 speed / latency No data input / output $0.043/M/$0.214/M | GPT-5.1 gpt-5.1-medium speed / latency No data input / output $0.179/M | |
Claude Opus 4 claude-opus-4-20250514 speed / latency No data input / output $0.342/M/$1.71/M | GPT-5.1 gpt-5.1 speed / latency No data input / output $0.086/M |
Weighted outcome: Claude Opus 4. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
Input
Output
| Features | Text inputImage inputFile inputText outputTool callingReasoning | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning |
|---|
