Data points: 86
The readout for Claude Opus 4 and Claude Sonnet 4, before the detailed comparison sheet.
Decision read
Claude Sonnet 4
Claude Sonnet 4 currently has the stronger profile, with verified wins split 0 to 5.
Evidence depth
86 data points
Includes 10 benchmark rows, 0 audit samples, and 9 provider examples.
Selection signal
Start with Claude Sonnet 4
The charts below split 19 high-signal samples across speed, scores, and audit health.
Switch either side of this report to compare another model with the same LMSpeed data pipeline.
Select a different model to open a new comparison URL.
Model compare Claude Opus 4 vs Claude Sonnet 4claude-opus-4-vs-claude-sonnet-4 | Model A Claude Opus 4 | Model B Claude Sonnet 4 |
|---|---|---|
| Overall leader | Contender | Leading |
| Verified metric wins | 0 wins | 5 wins |
| Where it leads | No data | Cheapest input price, Average speed, First-token latency, Provider coverage, Recent tests |
Third-party benchmark profile synced into LMSpeed; only metrics available for both models are shown.
Compare benchmark category scores on a 0-100 scale. Select a category to inspect the gap.
Avg. score
Claude Opus 4
58.9
Avg. score
Claude Sonnet 4
51.7
Selected category
Reasoning
Claude Opus 4 leads by 13.7
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
Claude Opus 4
$75.00/M
Rank #92/96 · confidence 4
Claude Sonnet 4
winner$15.00/M
Rank #79/96 · confidence 4
Claude Opus 4
$30.00/M
Rank #91/96 · confidence 4
Claude Sonnet 4
winner$6.00/M
Rank #80/96 · confidence 4
Claude Opus 4
$15.00/M
Rank #90/96 · confidence 4
Claude Sonnet 4
winner$3.00/M
Rank #80/96 · confidence 4
Claude Opus 4
winner86.0%
Rank #14/74 · confidence 4
Claude Sonnet 4
83.7%
Rank #24/74 · confidence 4
Claude Opus 4
winner70.1%
Rank #66/104 · confidence 4
Claude Sonnet 4
68.3%
Rank #69/104 · confidence 4
Claude Opus 4
winner5.9%
Rank #71/104 · confidence 4
Claude Sonnet 4
4.0%
Rank #92/104 · confidence 4
Claude Opus 4
winner54.2%
Rank #38/70 · confidence 4
Claude Sonnet 4
44.9%
Rank #46/70 · confidence 4
Claude Opus 4
winner40.9%
Rank #42/102 · confidence 4
Claude Sonnet 4
37.3%
Rank #59/102 · confidence 4
Claude Opus 4
winner94.1%
Rank #13/38 · confidence 4
Claude Sonnet 4
93.4%
Rank #15/38 · confidence 4
Claude Opus 4
winner56.3%
Rank #14/37 · confidence 4
Claude Sonnet 4
40.7%
Rank #19/37 · confidence 4
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | Claude Opus 4 | Claude Sonnet 4 |
|---|---|---|
| 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 Sonnet 4 |
|---|---|---|
15 tests | Claude Opus 4 speed / latency N/A / N/A input / output No data |
This report only uses LMSpeed data for Claude Opus 4 and Claude Sonnet 4: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Guidance | Claude Opus 4 | Claude Sonnet 4 |
|---|---|---|
| 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 Sonnet 4 Claude Sonnet 4 is stronger when you prioritize Cheapest input price, Average speed, First-token latency, Provider coverage, Recent tests. |
TL;DR: Claude Sonnet 4 leads across 86 verifiable data points, including pricing, speed, latency, benchmarks, and provider examples.
Continue from Claude Opus 4 vs Claude Sonnet 4 into nearby model comparisons with enough verified LMSpeed data.
| Model metadata | Claude Opus 4 exposes 200K 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 | 200K tokens | 1M tokens |
| Max output | 32K tokens | 64K tokens |
| Released | May 2025 | May 2025 |
| Modalities | Input ImageTextFile Output Text | Input ImageTextFile Output Text |
| Features | Text inputImage inputFile inputText outputTool callingReasoning | Text inputImage inputFile inputText outputTool callingReasoning |
| Parameters | No data | No data |
| Tokenizer | Claude | Claude |
| Knowledge cutoff | 2025-01-31 | 2025-01-31 |
| OpenRouter ID | anthropic/claude-opus-4 | anthropic/claude-sonnet-4 |
| References | No data | No data |
Claude Sonnet 4
speed / latency
36 tok/s / 6227ms
input / output
No data
180txt API0 tests | Claude Opus 4 speed / latency N/A / N/A input / output No data | Claude Sonnet 4 speed / latency N/A / N/A input / output No data |
|---|
6345ywz API0 tests | Claude Opus 4 speed / latency N/A / N/A input / output No data | Claude Sonnet 4 speed / latency N/A / N/A input / output No data |
|---|
9527 API0 tests | Claude Opus 4 speed / latency N/A / N/A input / output No data | Claude Sonnet 4 speed / latency N/A / N/A input / output No data |
|---|
AAAI0 tests | Claude Opus 4 speed / latency N/A / N/A input / output No data | Claude Sonnet 4 speed / latency N/A / N/A input / output No data |
|---|
Claude Opus 4 claude-opus-4-20250514 speed / latency No data input / output $0.205/M / $1.03/M | Claude Sonnet 4 claude-4-sonnet speed / latency No data input / output $1.03/M / $1.03/M |
Claude Opus 4 claude-opus-4-20250514 speed / latency No data input / output $0.342/M / $1.71/M | Claude Sonnet 4 claude-sonnet-4-20250514 speed / latency No data input / output $0.205/M / $1.03/M |
Claude Opus 4 claude-opus-4-20250514 speed / latency No data input / output $1.29/M / $6.43/M | Claude Sonnet 4 claude-sonnet-4-20250514 speed / latency No data input / output $0.257/M / $1.29/M |
Claude Opus 4 claude-opus-4-20250514 speed / latency No data input / output $1.80/M / $9.00/M | Claude Sonnet 4 claude-sonnet-4-20250514 speed / latency No data input / output $0.360/M / $1.80/M |
Rankings are based on community-submitted tests and periodic health probes. Advisory only, not official data.
