Data points: 81
The readout for Claude Opus 4 and Claude Opus 4.6, before the detailed comparison sheet.
Decision read
Claude Opus 4.6
Claude Opus 4.6 currently has the stronger profile, with verified wins split 0 to 6.
Evidence depth
81 data points
Includes 8 benchmark rows, 0 audit samples, and 8 provider examples.
Selection signal
Start with Claude Opus 4.6
The charts below split 16 high-signal samples across speed, scores, and audit health.
Model compare Claude Opus 4 vs Claude Opus 4.6claude-opus-4-vs-claude-opus-4-6 | Model A Claude Opus 4 | Model B Claude Opus 4.6 |
|---|---|---|
| Overall leader | Contender | Leading |
| Verified metric wins | 0 wins | 6 wins |
| Where it leads | No data | Cheapest input price, Average speed, First-token latency, Free providers, Provider coverage, Recent tests |
| Model metadata | Claude Opus 4 exposes 200K tokens; notable signals: Text input, Image input, File input, Text output. | Claude Opus 4.6 exposes 1M tokens; notable signals: Text input, Image input, File input, Text output. |
| Developer | Anthropic | Anthropic |
| Context window | 200K tokens | 1M tokens |
| Max output | 32K tokens | 128K tokens |
| Released | May 2025 | Apr 2026 |
| Modalities | Input ImageTextFile Output Text | Input TextImageFile Output Text |
| Features | Text inputImage inputFile inputText outputTool callingReasoning | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning |
| Parameters | No data | No data |
| Tokenizer | Claude | Claude |
| Knowledge cutoff | 2025-01-31 | No data |
| OpenRouter ID | anthropic/claude-opus-4 | anthropic/claude-opus-4.6-fast |
| References | No data | No data |
Third-party benchmark profile synced into LMSpeed; only metrics available for both models are shown.
| Metric | Claude Opus 4 | Claude Opus 4.6 |
|---|---|---|
| SciCode | 40.9%#41 | 45.7%#20 |
| Time to first answer token | 1.87 s#41 | 1.44 s#34 |
| GPQA | 70.1%#78 | 84.0%#38 |
| Input price | $15.00/M#43 | $5.00/M#41 |
| HLE | 5.9%#81 | 18.6%#43 |
| Output price | $75.00/M#52 | $25.00/M#47 |
| Time to first token | 1.87 s#68 | 1.44 s#57 |
| Blended price | $30.00/M#73 | $10.00/M#68 |
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | Claude Opus 4 | Claude Opus 4.6 |
|---|---|---|
| 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 | Claude Opus 4.6 |
|---|---|---|
Rnglg2 API15 tests | Claude Opus 4 speed / latency N/A / N/A input / output No data | Claude Opus 4.6 speed / latency 57 tok/s / 3926ms input / output No data |
ModelPool10 tests | Claude Opus 4 claude-opus-4-20250514 speed / latency N/A / N/A input / output $1.29/M / $6.43/M | Claude Opus 4.6 claude-opus-4-6-thinking speed / latency 84 tok/s / 3916ms input / output $0.429/M / $2.14/M |
EasyMore5 tests | Claude Opus 4 speed / latency N/A / N/A input / output No data | Claude Opus 4.6 speed / latency 27 tok/s / 15402ms input / output No data |
N1N5 tests | Claude Opus 4 speed / latency N/A / N/A input / output No data | Claude Opus 4.6 speed / latency 46 tok/s / 2559ms input / output No data |
TradingBase API5 tests | Claude Opus 4 speed / latency N/A / N/A input / output No data | Claude Opus 4.6 speed / latency 43 tok/s / 1437ms input / output No data |
Claude Opus 4 claude-opus-4-20250514 speed / latency No data input / output $0.205/M / $1.03/M | Claude Opus 4.6 claude-opus-4-6 speed / latency No data input / output $0.068/M / $0.342/M | |
Claude Opus 4 claude-opus-4-20250514 speed / latency No data input / output $0.342/M / $1.71/M | Claude Opus 4.6 claude-opus-4-6-thinking speed / latency No data input / output $0.342/M / $1.71/M | |
Claude Opus 4 claude-4-opus speed / latency No data input / output $2.05/M / $10.27/M | Claude Opus 4.6 claude-opus-4-6-medium speed / latency No data input / output $0.685/M / $3.42/M |
This report only uses LMSpeed data for Claude Opus 4 and Claude Opus 4.6: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Guidance | Claude Opus 4 | Claude Opus 4.6 |
|---|---|---|
| When to choose each model | Claude Opus 4 Claude Opus 4 does not clearly lead on the verified metrics here, so check provider-specific pricing before choosing. | Claude Opus 4.6 Claude Opus 4.6 is stronger when you prioritize Cheapest input price, Average speed, First-token latency, Free providers, Provider coverage, Recent tests. |
TL;DR: Claude Opus 4.6 leads across 81 verifiable data points, including pricing, speed, latency, benchmarks, and provider examples.
Continue from Claude Opus 4 vs Claude Opus 4.6 into nearby model comparisons with enough verified LMSpeed data.
Rankings are based on community-submitted tests and periodic health probes. Advisory only, not official data.
