Data points: 86
The readout for Claude Opus 4.6 and Claude Sonnet 4, 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
86 data points
Includes 8 benchmark rows, 1 audit samples, and 8 provider examples.
Selection signal
Start with Claude Opus 4.6
The charts below split 17 high-signal samples across speed, scores, and audit health.
Model compare Claude Opus 4.6 vs Claude Sonnet 4claude-opus-4-6-vs-claude-sonnet-4 | Model A Claude Opus 4.6 | Model B Claude Sonnet 4 |
|---|---|---|
| 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 |
|---|---|---|
| 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 |
|---|---|---|
Winner: Claude Opus 4.6 | Claude Opus 4.6 claude-opus-4-6 Audit score 82 66 |
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 |
|---|---|---|
20 tests | Claude Opus 4.6 speed / latency 40 tok/s / 16141ms input / output No data |
This report only uses LMSpeed data for Claude Opus 4.6 and Claude Sonnet 4: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Guidance | Claude Opus 4.6 | Claude Sonnet 4 |
|---|---|---|
| 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 Claude Sonnet 4 is stronger when you prioritize Cheapest input price, First-token latency. |
TL;DR: Claude Opus 4.6 leads across 86 verifiable data points, including pricing, speed, latency, benchmarks, and provider examples.
Continue from Claude Opus 4.6 vs Claude Sonnet 4 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 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 | May 2025 |
| Modalities | Input TextImageFile Output Text | Input ImageTextFile Output Text |
| Features | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning | Text inputImage inputFile inputText outputTool callingReasoning |
| 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 |
| References | No data | No data |
| Time to first answer token | 1.44 s#34 | 1.07 s#24 |
|---|
| GPQA | 84.0%#38 | 68.3%#83 |
|---|
| Input price | $5.00/M#41 | $3.00/M#39 |
|---|
| Time to first token | 1.44 s#57 | 1.07 s#39 |
|---|
| HLE | 18.6%#43 | 4.0%#95 |
|---|
| Output price | $25.00/M#47 | $15.00/M#44 |
|---|
| Blended price | $10.00/M#68 | $6.00/M#65 |
|---|
Claude Sonnet 4 claude-sonnet-4 No audit yet |
Claude Sonnet 4
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 speed / latency N/A / N/A input / output No data |
|---|
鲨鱼魔法15 tests | Claude Opus 4.6 speed / latency N/A / N/A input / output No data | Claude Sonnet 4 speed / latency 36 tok/s / 6227ms input / output No data |
|---|
Completions10 tests | Claude Opus 4.6 speed / latency 26 tok/s / 1130ms input / output No data | Claude Sonnet 4 speed / latency 27 tok/s / 1036ms input / output No data |
|---|
ModelPool10 tests | Claude Opus 4.6 speed / latency 84 tok/s / 3916ms input / output No data | Claude Sonnet 4 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 claude-sonnet-4 speed / latency No data input / output $3.00/M / $15.00/M |
Claude Opus 4.6 claude-opus-4-6-thinking speed / latency No data input / output $5.00/M / $25.00/M | Claude Sonnet 4 claude-sonnet-4 speed / latency No data input / output $0.0010/M / $0.0010/M |
Claude Opus 4.6 c/claude-opus-4-6-thinking speed / latency No data input / output $0.0017/M / $0.0017/M | Claude Sonnet 4 claude-sonnet-4-20250514 speed / latency No data input / output $3.00/M / $15.00/M |
Rankings are based on community-submitted tests and periodic health probes. Advisory only, not official data.
