Data points: 111
The readout for Claude Opus 4.6 and Claude Sonnet 4.5, 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 2.
Evidence depth
111 data points
Includes 8 benchmark rows, 5 audit samples, and 7 provider examples.
Selection signal
Start with Claude Opus 4.6
The charts below split 20 high-signal samples across speed, scores, and audit health.
Model compare Claude Opus 4.6 vs Claude Sonnet 4.5claude-opus-4-6-vs-claude-sonnet-4-5 | Model A Claude Opus 4.6 | Model B Claude Sonnet 4.5 |
|---|---|---|
| Overall leader | Leading | Contender |
| Verified metric wins | 4 wins | 2 wins |
| Where it leads | 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 Opus 4.6 | Claude Sonnet 4.5 |
|---|---|---|
| SciCode | 45.7%#20 |
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | Claude Opus 4.6 | Claude Sonnet 4.5 |
|---|---|---|
Winner: Claude Opus 4.6 | Claude Opus 4.6 claude-opus-4-6 Audit score 97 100 |
Speed aggregates and input/output pricing share each provider row for real API selection and migration cost checks.
| Provider | Claude Opus 4.6 | Claude Sonnet 4.5 |
|---|---|---|
25 tests | Claude Opus 4.6 speed / latency 43 tok/s / 2542ms input / output No data |
This report only uses LMSpeed data for Claude Opus 4.6 and Claude Sonnet 4.5: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Guidance | Claude Opus 4.6 | Claude Sonnet 4.5 |
|---|---|---|
| When to choose each model | Claude Opus 4.6 Claude Opus 4.6 is stronger when you prioritize Average speed, Free providers, Provider coverage, Recent tests. | Claude Sonnet 4.5 Claude Sonnet 4.5 is stronger when you prioritize Cheapest input price, First-token latency. |
TL;DR: Claude Opus 4.6 leads across 111 verifiable data points, including pricing, speed, latency, benchmarks, and provider examples.
Continue from Claude Opus 4.6 vs Claude Sonnet 4.5 into nearby model comparisons with enough verified LMSpeed data.
| Cheapest input price, First-token latency |
| Model metadata | Claude Opus 4.6 exposes 1M tokens; notable signals: Text input, Image input, File input, Text output. | Claude Sonnet 4.5 exposes 1M tokens; notable signals: Text input, Image input, File input, Text output. |
|---|---|---|
| Developer | Anthropic | Anthropic |
| Context window | 1M tokens | 1M tokens |
| Max output | 128K tokens | 64K tokens |
| Released | Apr 2026 | Sep 2025 |
| 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 | Claude |
| Knowledge cutoff | No data | 2025-01-31 |
| OpenRouter ID | anthropic/claude-opus-4.6-fast | anthropic/claude-sonnet-4.5 |
| References | No data | No data |
| Time to first answer token | 1.44 s#34 | 1.55 s#37 |
|---|
| GPQA | 84.0%#38 | 72.7%#75 |
|---|
| Input price | $5.00/M#41 | $3.00/M#39 |
|---|
| HLE | 18.6%#43 | 7.1%#77 |
|---|
| Output price | $25.00/M#47 | $15.00/M#44 |
|---|
| Time to first token | 1.44 s#57 | 1.55 s#60 |
|---|
| Blended price | $10.00/M#68 | $6.00/M#65 |
|---|
Claude Sonnet 4.5 claude-sonnet-4-5-20250929 No audit yet |
Leonhard APIWinner: Claude Sonnet 4.5 | Claude Opus 4.6 claude-opus-4-6 Audit score 82 668478100 | Claude Sonnet 4.5 claude-sonnet-4.5 Audit score 91 64100100100 |
|---|
Yuan APIWinner: Claude Opus 4.6 | Claude Opus 4.6 claude-opus-4-6 Audit score 89 56100100100 | Claude Sonnet 4.5 claude-sonnet-4-5 No audit yet |
|---|
CodeXEWinner: Claude Sonnet 4.5 | Claude Opus 4.6 claude-opus-4.6 No audit yet | Claude Sonnet 4.5 claude-sonnet-4.5 Audit score 86 728410088 |
|---|
Omini ApiWinner: Claude Opus 4.6 | Claude Opus 4.6 claude-opus-4-6 Audit score 78 70728088 | Claude Sonnet 4.5 claude-sonnet-4-5-20250929 No audit yet |
|---|
Claude Sonnet 4.5
speed / latency
N/A / N/A
input / output
No data
巨量API22 tests | Claude Opus 4.6 speed / latency 24 tok/s / 7946ms input / output No data | Claude Sonnet 4.5 speed / latency 17 tok/s / 9739ms input / output No data |
|---|
Kunkunout API20 tests | Claude Opus 4.6 speed / latency 40 tok/s / 16141ms input / output No data | Claude Sonnet 4.5 speed / latency N/A / N/A input / output No data |
|---|
钠 API20 tests | Claude Opus 4.6 speed / latency 42 tok/s / 2282ms input / output No data | Claude Sonnet 4.5 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 | Claude Sonnet 4.5 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 | Claude Sonnet 4.5 claude-sonnet-4-5-20250929 speed / latency No data input / output $0.430/M / $2.15/M |
Claude Opus 4.6 claude-opus-4-6-medium speed / latency No data input / output $0.0014/M / $0.0068/M | Claude Sonnet 4.5 claude-sonnet-4-5-20250929 speed / latency No data input / output $0.0008/M / $0.0041/M |
Rankings are based on community-submitted tests and periodic health probes. Advisory only, not official data.
