Data points: 71
Model compare
The readout for Claude 3 Sonnet 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 0 to 100.
Evidence depth
71 data points
Includes 10 benchmark rows, 0 audit samples, and 7 provider examples.
Selection signal
Start with Claude Sonnet 4
The charts below split 17 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 Sonnet and Claude Sonnet 4: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Model compare | Claude 3 Sonnet | Claude Sonnet 4 |
|---|---|---|
| Overall leader | Contender | Leading |
| Weighted overall score | 0.0 pts | 100.0 pts |
| Benchmark category leads | 0 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 Sonnet | 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 Sonnet and Claude Sonnet 4: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
Claude 3 Sonnet
Claude 3 Sonnet does not clearly lead in the benchmark or operational dimensions shared by both models.
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 Sonnet
37.9
Avg. score
Claude Sonnet 4
47.9
Claude Sonnet 4
Claude Sonnet 4 leads by 10.6
Claude Sonnet 4 leads by 9.9
Claude Sonnet 4
Claude Sonnet 4 leads by 13.6
No data
No data
Claude Sonnet 4
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
Claude 3 Sonnet
$6.00/M
Rank #143/169 · confidence 4
Claude Sonnet 4
$6.00/M
Rank #143/169 · confidence 4
Claude 3 Sonnet
$3.00/M
Rank #143/169 · confidence 4
Claude Sonnet 4
$3.00/M
Rank #143/169 · confidence 4
Claude 3 Sonnet
$15.00/M
Rank #143/169 · confidence 4
Claude Sonnet 4
$15.00/M
Rank #143/169 · confidence 4
Claude 3 Sonnet
57.9%
Rank #116/125 · confidence 4
Claude Sonnet 4
winner83.7%
Rank #32/125 · confidence 4
Claude 3 Sonnet
40.0%
Rank #185/194 · confidence 4
Claude Sonnet 4
winner68.3%
Rank #124/194 · confidence 4
Claude 3 Sonnet
3.8%
Rank #174/193 · confidence 4
Claude Sonnet 4
winner4.0%
Rank #168/193 · confidence 4
Claude 3 Sonnet
17.5%
Rank #109/115 · confidence 4
Claude Sonnet 4
winner44.9%
Rank #66/115 · confidence 4
Claude 3 Sonnet
22.9%
Rank #172/191 · confidence 4
Claude Sonnet 4
winner37.3%
Rank #99/191 · confidence 4
Claude 3 Sonnet
41.4%
Rank #70/72 · confidence 4
Claude Sonnet 4
winner93.4%
Rank #26/72 · confidence 4
Claude 3 Sonnet
4.7%
Rank #61/68 · confidence 4
Claude Sonnet 4
winner40.7%
Rank #33/68 · confidence 4
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | Claude 3 Sonnet | 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 Sonnet | Claude Sonnet 4 |
|---|---|---|
0 tests | Claude 3 Sonnet claude-3-sonnet-20240229 speed / latency N/A / N/A input / output $21.00/M/$105.00/M | Claude Sonnet 4 claude-sonnet-4-20250514 speed / latency N/A / N/A input / output $21.00/M/$105.00/M |
0 tests | Claude 3 Sonnet 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 Sonnet 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 Sonnet 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 Sonnet claude-3-sonnet-20240229 speed / latency N/A / N/A input / output $3.00/M/$15.00/M | Claude Sonnet 4 anthropic/claude-4-sonnet-20250522 speed / latency N/A / N/A input / output $75.00/M |
Claude 3 Sonnet claude-3-sonnet-20240229 speed / latency No data input / output $0.411/M/$2.05/M | Claude Sonnet 4 claude-sonnet-4-20250514 speed / latency No data input / output $0.411/M | |
Claude 3 Sonnet claude-3-sonnet-20240229 speed / latency No data input / output $3.60/M/$18.00/M | Claude Sonnet 4 claude-sonnet-4-20250514 speed / latency No data input / output $3.60/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 |
|---|
