Data points: 83
Model compare
The readout for Claude 3 Opus and Claude Sonnet 4, before the detailed comparison sheet.
Weighted outcome: Claude Sonnet 4. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
Decision read
Claude Sonnet 4
Claude Sonnet 4 has the higher weighted result; Model A / B score 20 to 80.
Evidence depth
83 data points
Includes 14 benchmark rows, 0 audit samples, and 7 provider examples.
Selection signal
Start with Claude Sonnet 4
The charts below split 21 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.
This report only uses LMSpeed data for Claude 3 Opus and Claude Sonnet 4: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Model compare | Claude 3 Opus | Claude Sonnet 4 |
|---|---|---|
| Overall leader | Contender | Leading |
| Weighted overall score | 20.0 pts | 80.0 pts |
| Benchmark category leads | 1 categories | 3 categories |
| Operational advantages | No data | Cheapest input price, Free providers, Provider coverage |
| Context window | No data | 1M tokens |
| Max output | No data | 64K tokens |
| Modalities | No data | Input ImageTextFile Output Text |
The overall result weights benchmark capability categories at 80% and price, API speed/latency, and availability at 20%. Recent test volume does not affect the winner, and missing benchmark categories are excluded.
| Model compare | Claude 3 Opus | Claude Sonnet 4 |
|---|---|---|
| Developer | Anthropic | Anthropic |
| Released | No data | May 2025 |
| Parameters | No data | No data |
| Tokenizer | No data | Claude |
| Knowledge cutoff | No data | 2025-01-31 |
| OpenRouter ID | No data | anthropic/claude-sonnet-4 |
| References | No data | No data |
This report only uses LMSpeed data for Claude 3 Opus and Claude Sonnet 4: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
Claude 3 Opus
Claude 3 Opus leads these benchmark categories: Knowledge.
Claude Sonnet 4
Claude Sonnet 4 is stronger in benchmark categories (Coding, Reasoning, Math) and operational dimensions (Cheapest input price, Free providers, Provider coverage).
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 3 Opus
44.3
Avg. score
Claude Sonnet 4
47.9
Claude Sonnet 4
Claude Sonnet 4 leads by 8.4
Claude Sonnet 4 leads by 5.9
Claude 3 Opus leads by 5.3
Claude Sonnet 4 leads by 11.6
No data
No data
Claude Sonnet 4
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
Claude 3 Opus
$75.00/M
Rank #157/162 · confidence 4
Claude Sonnet 4
winner$15.00/M
Rank #136/162 · confidence 4
Claude 3 Opus
$30.00/M
Rank #156/162 · confidence 4
Claude Sonnet 4
winner$6.00/M
Rank #137/162 · confidence 4
Claude 3 Opus
$15.00/M
Rank #155/162 · confidence 4
Claude Sonnet 4
winner$3.00/M
Rank #137/162 · confidence 4
Claude 3 Opus
69.6%
Rank #102/125 · confidence 4
Claude Sonnet 4
winner83.7%
Rank #32/125 · confidence 4
Claude 3 Opus
48.9%
Rank #166/188 · confidence 4
Claude Sonnet 4
winner68.3%
Rank #117/188 · confidence 4
Claude 3 Opus
3.1%
Rank #184/187 · confidence 4
Claude Sonnet 4
winner4.0%
Rank #162/187 · confidence 4
Claude 3 Opus
27.9%
Rank #93/115 · confidence 4
Claude Sonnet 4
winner44.9%
Rank #66/115 · confidence 4
Claude 3 Opus
23.3
Rank #93/96 · confidence 1 · eval date 2024-03-01
Claude Sonnet 4
winner37.3
Rank #71/96 · confidence 1 · eval date 2025-05-01
Claude 3 Opus
23.3%
Rank #164/185 · confidence 4
Claude Sonnet 4
winner37.3%
Rank #94/185 · confidence 4
Claude 3 Opus
64.1%
Rank #66/74 · confidence 4
Claude Sonnet 4
winner93.4%
Rank #26/74 · confidence 4
Claude 3 Opus
3.3%
Rank #62/68 · confidence 4
Claude Sonnet 4
winner40.7%
Rank #33/68 · confidence 4
Claude 3 Opus
11.8
Rank #89/99 · confidence 1 · eval date 2024-03-01
Claude Sonnet 4
winner25.5
Rank #64/99 · confidence 1 · eval date 2025-05-01
Claude 3 Opus
48.9
Rank #94/96 · confidence 1 · eval date 2024-03-01
Claude Sonnet 4
winner68.3
Rank #76/96 · confidence 1 · eval date 2025-05-01
Claude 3 Opus
3.1
Rank #96/96 · confidence 1 · eval date 2024-03-01
Claude Sonnet 4
winner4.0
Rank #89/96 · confidence 1 · eval date 2025-05-01
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | Claude 3 Opus | 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 3 Opus | Claude Sonnet 4 |
|---|---|---|
0 tests | Claude 3 Opus speed / latency N/A / N/A input / output No data | Claude Sonnet 4 speed / latency N/A / N/A input / output No data |
0 tests | Claude 3 Opus speed / latency N/A / N/A input / output No data | Claude Sonnet 4 speed / latency N/A / N/A input / output No data |
0 tests | Claude 3 Opus speed / latency N/A / N/A input / output No data | Claude Sonnet 4 speed / latency N/A / N/A input / output No data |
0 tests | Claude 3 Opus speed / latency N/A / N/A input / output No data | Claude Sonnet 4 speed / latency N/A / N/A input / output No data |
0 tests | Claude 3 Opus claude-3-opus-20240229 speed / latency N/A / N/A input / output $2.05/M/$10.27/M | Claude Sonnet 4 claude-sonnet-4-20250514 speed / latency N/A / N/A input / output $0.822/M |
Claude 3 Opus claude-3-opus-20240229 speed / latency No data input / output $2.05/M/$10.27/M | Claude Sonnet 4 claude-sonnet-4-20250514 speed / latency No data input / output $0.411/M | |
Claude 3 Opus claude-3-opus-20240229 speed / latency No data input / output $1.82/M/$9.11/M | Claude Sonnet 4 claude-sonnet-4-20250514 speed / latency No data input / output $0.664/M |
Weighted outcome: Claude Sonnet 4. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
| Features | None listed | Text inputImage inputFile inputText outputTool callingReasoning |
|---|
