Data points: 82
The readout for Claude Sonnet 4 and GPT-5, before the detailed comparison sheet.
Decision read
GPT-5
GPT-5 currently has the stronger profile, with verified wins split 1 to 5.
Evidence depth
82 data points
Includes 8 benchmark rows, 0 audit samples, and 8 provider examples.
Selection signal
Start with GPT-5
The charts below split 16 high-signal samples across speed, scores, and audit health.
Model compare Claude Sonnet 4 vs GPT-5claude-sonnet-4-vs-gpt-5 | Model A Claude Sonnet 4 | Model B GPT-5 |
|---|---|---|
| Overall leader | Contender | Leading |
| Verified metric wins | 1 wins | 5 wins |
| Where it leads | First-token latency | Cheapest input price, Average speed, Free providers, Provider coverage, Recent tests |
Third-party benchmark profile synced into LMSpeed; only metrics available for both models are shown.
| Metric | Claude Sonnet 4 | GPT-5 |
|---|---|---|
| AIME | 40.7%#29 |
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | Claude Sonnet 4 | GPT-5 |
|---|---|---|
| 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 Sonnet 4 | GPT-5 |
|---|---|---|
20 tests | Claude Sonnet 4 speed / latency N/A / N/A input / output No data |
This report only uses LMSpeed data for Claude Sonnet 4 and GPT-5: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Guidance | Claude Sonnet 4 | GPT-5 |
|---|---|---|
| When to choose each model | Claude Sonnet 4 Claude Sonnet 4 is stronger when you prioritize First-token latency. | GPT-5 GPT-5 is stronger when you prioritize Cheapest input price, Average speed, Free providers, Provider coverage, Recent tests. |
TL;DR: GPT-5 leads across 82 verifiable data points, including pricing, speed, latency, benchmarks, and provider examples.
Continue from Claude Sonnet 4 vs GPT-5 into nearby model comparisons with enough verified LMSpeed data.
| Model metadata | Claude Sonnet 4 exposes 1M tokens; notable signals: Text input, Image input, File input, Text output. | GPT-5 exposes 128K tokens; notable signals: Text input, Image input, File input, Text output. |
|---|---|---|
| Developer | Anthropic | OpenAI |
| Context window | 1M tokens | 128K tokens |
| Max output | 64K tokens | 16.4K tokens |
| Released | May 2025 | Aug 2025 |
| Modalities | Input ImageTextFile Output Text | Input FileImageText Output Text |
| Features | Text inputImage inputFile inputText outputTool callingReasoning | Text inputImage inputFile inputText outputStructured outputsJSON mode |
| Parameters | No data | No data |
| Tokenizer | Claude | GPT |
| Knowledge cutoff | 2025-01-31 | 2024-09-30 |
| OpenRouter ID | anthropic/claude-sonnet-4 | openai/gpt-5-chat |
| References | No data | No data |
| MATH-500 | 93.4%#23 | 99.4%#1 |
|---|
| MMLU-Pro | 83.7%#23 | 87.1%#7 |
|---|
| LiveCodeBench | 44.9%#61 | 84.6%#11 |
|---|
| HLE | 4.0%#95 | 26.5%#24 |
|---|
| Time to first answer token | 1.07 s#24 | 62.85 s#98 |
|---|
| Input price | $3.00/M#39 | $1.25/M#30 |
|---|
| GPQA | 68.3%#83 | 85.4%#31 |
|---|
GPT-5
speed / latency
95 tok/s / 1234ms
input / output
No data
EasyMore5 tests | Claude Sonnet 4 speed / latency N/A / N/A input / output No data | GPT-5 speed / latency 46 tok/s / 6577ms input / output No data |
|---|
N1N5 tests | Claude Sonnet 4 speed / latency N/A / N/A input / output No data | GPT-5 speed / latency 102 tok/s / 948ms input / output No data |
|---|
Undy API5 tests | Claude Sonnet 4 speed / latency N/A / N/A input / output No data | GPT-5 speed / latency 131 tok/s / 743ms input / output No data |
|---|
10dian-API0 tests | Claude Sonnet 4 claude-sonnet-4 speed / latency N/A / N/A input / output $0.020/M / $0.020/M | GPT-5 gpt-5 speed / latency N/A / N/A input / output $0.010/M / $0.010/M |
|---|
Claude Sonnet 4 claude-sonnet-4 speed / latency No data input / output $0.040/M / $0.200/M | GPT-5 gpt-5 speed / latency No data input / output $0.020/M / $0.160/M |
Claude Sonnet 4 claude-4-sonnet speed / latency No data input / output $1.03/M / $1.03/M | GPT-5 gpt-5-2025-08-07 speed / latency No data input / output $0.034/M / $0.274/M |
Claude Sonnet 4 claude-sonnet-4-20250514 speed / latency No data input / output $0.205/M / $1.03/M | GPT-5 gpt-5 speed / latency No data input / output $0.086/M / $0.685/M |
Rankings are based on community-submitted tests and periodic health probes. Advisory only, not official data.
