Data points: 110
The readout for Claude Sonnet 4.6 and GPT-5.4, before the detailed comparison sheet.
Decision read
GPT-5.4
GPT-5.4 currently has the stronger profile, with verified wins split 2 to 3.
Evidence depth
110 data points
Includes 8 benchmark rows, 6 audit samples, and 10 provider examples.
Selection signal
Start with GPT-5.4
The charts below split 24 high-signal samples across speed, scores, and audit health.
Model compare Claude Sonnet 4.6 vs GPT-5.4claude-sonnet-4-6-vs-gpt-5-4 | Model A Claude Sonnet 4.6 | Model B GPT-5.4 |
|---|---|---|
| Overall leader | Contender | Leading |
| Verified metric wins | 2 wins | 3 wins |
| Where it leads | Cheapest input price, First-token latency |
Third-party benchmark profile synced into LMSpeed; only metrics available for both models are shown.
| Metric | Claude Sonnet 4.6 | GPT-5.4 |
|---|---|---|
| GPQA | 79.9%#58 |
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | Claude Sonnet 4.6 | GPT-5.4 |
|---|---|---|
Winner: Claude Sonnet 4.6 | Claude Sonnet 4.6 claude-sonnet-4-6 Audit score 91 64 |
Speed aggregates and input/output pricing share each provider row for real API selection and migration cost checks.
| Provider | Claude Sonnet 4.6 | GPT-5.4 |
|---|---|---|
75 tests | Claude Sonnet 4.6 speed / latency 40 tok/s / 3145ms input / output No data |
This report only uses LMSpeed data for Claude Sonnet 4.6 and GPT-5.4: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Guidance | Claude Sonnet 4.6 | GPT-5.4 |
|---|---|---|
| When to choose each model | Claude Sonnet 4.6 Claude Sonnet 4.6 is stronger when you prioritize Cheapest input price, First-token latency. | GPT-5.4 GPT-5.4 is stronger when you prioritize Average speed, Provider coverage, Recent tests. |
TL;DR: GPT-5.4 leads across 110 verifiable data points, including pricing, speed, latency, benchmarks, and provider examples.
Continue from Claude Sonnet 4.6 vs GPT-5.4 into nearby model comparisons with enough verified LMSpeed data.
| Average speed, Provider coverage, Recent tests |
| Model metadata | Claude Sonnet 4.6 exposes 1M tokens; notable signals: Text input, Image input, File input, Text output. | GPT-5.4 exposes 1.1M tokens; notable signals: Text input, Image input, File input, Text output. |
|---|---|---|
| Developer | Anthropic | OpenAI |
| Context window | 1M tokens | 1.1M tokens |
| Max output | 128K tokens | 128K tokens |
| Released | Feb 2026 | Mar 2026 |
| Modalities | Input TextImageFile Output Text | Input TextImageFile Output Text |
| Features | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning | Text inputImage inputFile inputText outputTool callingStructured outputsJSON mode |
| Parameters | No data | No data |
| Tokenizer | Claude | GPT |
| Knowledge cutoff | No data | No data |
| OpenRouter ID | anthropic/claude-sonnet-4.6 | openai/gpt-5.4 |
| References | No data | No data |
| SciCode | 46.9%#16 | 56.6%#3 |
|---|
| HLE | 13.2%#58 | 41.6%#4 |
|---|
| Time to first answer token | 1.28 s#30 | 134.24 s#111 |
|---|
| Input price | $3.00/M#39 | $2.50/M#37 |
|---|
| Output price | $15.00/M#44 | $15.00/M#44 |
|---|
| Time to first token | 1.28 s#51 | 134.24 s#110 |
|---|
| Output speed | 47.0 tok/s#94 | 92.4 tok/s#56 |
|---|
GPT-5.4 gpt-5.4 No audit yet |
钠 APIWinner: GPT-5.4 | Claude Sonnet 4.6 claude-sonnet-4-6 No audit yet | GPT-5.4 gpt-5.4 Audit score 90 1008476100 |
|---|
ApiToken OnlineWinner: Claude Sonnet 4.6 | Claude Sonnet 4.6 claude-sonnet-4-6 Audit score 84 6968100100 | GPT-5.4 gpt-5.4 No audit yet |
|---|
TokenessWinner: Claude Sonnet 4.6 | Claude Sonnet 4.6 claude-sonnet-4-6 Audit score 82 598484100 | GPT-5.4 gpt-5.4 No audit yet |
|---|
VSLLMWinner: Claude Sonnet 4.6 | Claude Sonnet 4.6 claude-sonnet-4-6 Audit score 82 727580100 | GPT-5.4 gpt-5.4 No audit yet |
|---|
PackyAPIWinner: Claude Sonnet 4.6 | Claude Sonnet 4.6 claude-sonnet-4-6 Audit score 81 727280100 | GPT-5.4 gpt-5.4 No audit yet |
|---|
GPT-5.4
speed / latency
50 tok/s / 7305ms
input / output
No data
巨量API51 tests | Claude Sonnet 4.6 speed / latency 39 tok/s / 5723ms input / output No data | GPT-5.4 speed / latency 43 tok/s / 12778ms input / output No data |
|---|
UoCode30 tests | Claude Sonnet 4.6 speed / latency 32 tok/s / 6074ms input / output No data | GPT-5.4 speed / latency 31 tok/s / 2364ms input / output No data |
|---|
Sub2API20 tests | Claude Sonnet 4.6 speed / latency N/A / N/A input / output No data | GPT-5.4 speed / latency 34 tok/s / 1748ms input / output No data |
|---|
6345ywz API15 tests | Claude Sonnet 4.6 speed / latency N/A / N/A input / output No data | GPT-5.4 speed / latency 41 tok/s / 6581ms input / output No data |
|---|
Claude Sonnet 4.6 claude-sonnet-4-6 speed / latency No data input / output $43.80/M / $219.00/M | GPT-5.4 gpt-5.4-openai-compact speed / latency No data input / output $0/M / $0/M |
Claude Sonnet 4.6 anthropic/claude-sonnet-4.6 speed / latency No data input / output $0/M / $0/M | GPT-5.4 gpt-5.4-openai-compact speed / latency No data input / output $75.00/M / $450.00/M |
Claude Sonnet 4.6 claude-sonnet-4.6 speed / latency No data input / output $0/M / $0/M | GPT-5.4 GPT-5.4 speed / latency No data input / output $75.00/M / $75.00/M |
Claude Sonnet 4.6 c/claude-sonnet-4-6 speed / latency No data input / output $0.0004/M / $0.0004/M | GPT-5.4 gpt-5.4 speed / latency No data input / output $1.25/M / $7.50/M |
Claude Sonnet 4.6 claude-sonnet-4-6 speed / latency No data input / output $0.0008/M / $0.0041/M | GPT-5.4 gpt-5.4-openai-compact speed / latency No data input / output $0.0007/M / $0.0041/M |
Rankings are based on community-submitted tests and periodic health probes. Advisory only, not official data.
