Data points: 86
Model compare
The readout for Claude 3.5 Haiku 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 12 to 88.
Evidence depth
86 data points
Includes 10 benchmark rows, 0 audit samples, and 8 provider examples.
Selection signal
Start with Claude Sonnet 4
The charts below split 18 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 3.5 Haiku and Claude Sonnet 4: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Model compare | Claude 3.5 Haiku | Claude Sonnet 4 |
|---|---|---|
| Overall leader | Contender | Leading |
| Weighted overall score | 12.0 pts | 88.0 pts |
| Benchmark category leads | 0 categories | 3 categories |
| Operational advantages | Cheapest input price, Average speed, First-token latency | Free providers, Provider coverage |
| Context window | 200K tokens | 1M tokens |
| Max output | 8.2K tokens | 64K tokens |
| Modalities | Input TextImage Output Text | Input |
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 3.5 Haiku | Claude Sonnet 4 |
|---|---|---|
| Developer | Anthropic | Anthropic |
| Released | Nov 2024 | May 2025 |
| Parameters | No data | No data |
| Tokenizer | Claude | Claude |
| Knowledge cutoff | 2024-07-31 | 2025-01-31 |
| OpenRouter ID | anthropic/claude-3.5-haiku | anthropic/claude-sonnet-4 |
| References | No data | No data |
This report only uses LMSpeed data for Claude 3.5 Haiku and Claude Sonnet 4: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
Claude 3.5 Haiku
Claude 3.5 Haiku has these operational advantages: Cheapest input price, Average speed, First-token latency.
Claude Sonnet 4
Claude Sonnet 4 is stronger in benchmark categories (Coding, Reasoning, Math) and operational dimensions (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 3.5 Haiku
41.4
Avg. score
Claude Sonnet 4
48
Claude Sonnet 4
Claude Sonnet 4 leads by 5.1
Claude Sonnet 4 leads by 8.4
Claude Sonnet 4
Claude Sonnet 4 leads by 10.5
No data
No data
Claude Sonnet 4
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
Claude 3.5 Haiku
winner$4.00/M
Rank #94/163 · confidence 4
Claude Sonnet 4
$15.00/M
Rank #138/163 · confidence 4
Claude 3.5 Haiku
winner$1.60/M
Rank #96/163 · confidence 4
Claude Sonnet 4
$6.00/M
Rank #139/163 · confidence 4
Claude 3.5 Haiku
winner$0.800/M
Rank #97/163 · confidence 4
Claude Sonnet 4
$3.00/M
Rank #139/163 · confidence 4
Claude 3.5 Haiku
63.4%
Rank #113/125 · confidence 4
Claude Sonnet 4
winner83.7%
Rank #32/125 · confidence 4
Claude 3.5 Haiku
40.8%
Rank #175/187 · confidence 4
Claude Sonnet 4
winner68.3%
Rank #117/187 · confidence 4
Claude 3.5 Haiku
3.5%
Rank #176/186 · confidence 4
Claude Sonnet 4
winner4.0%
Rank #161/186 · confidence 4
Claude 3.5 Haiku
31.4%
Rank #87/115 · confidence 4
Claude Sonnet 4
winner44.9%
Rank #66/115 · confidence 4
Claude 3.5 Haiku
27.4%
Rank #148/184 · confidence 4
Claude Sonnet 4
winner37.3%
Rank #93/184 · confidence 4
Claude 3.5 Haiku
72.1%
Rank #58/72 · confidence 4
Claude Sonnet 4
winner93.4%
Rank #26/72 · confidence 4
Claude 3.5 Haiku
3.3%
Rank #62/68 · 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 3.5 Haiku | 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 3.5 Haiku | Claude Sonnet 4 |
|---|---|---|
5 tests | Claude 3.5 Haiku speed / latency 42 tok/s / 2458ms input / output No data | Claude Sonnet 4 speed / latency N/A / N/A input / output No data |
0 tests | Claude 3.5 Haiku 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 3.5 Haiku 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 3.5 Haiku 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 3.5 Haiku speed / latency N/A / N/A input / output No data | Claude Sonnet 4 speed / latency N/A / N/A input / output No data |
Claude 3.5 Haiku claude-3-5-haiku-20241022 speed / latency No data input / output $0.034/M/$0.171/M | Claude Sonnet 4 claude-sonnet-4-20250514 speed / latency No data input / output $0.822/M | |
Claude 3.5 Haiku claude-3-5-haiku-latest speed / latency No data input / output $0.035/M/$0.174/M | Claude Sonnet 4 claude-sonnet-4-20250514 speed / latency No data input / output $0.104/M | |
Claude 3.5 Haiku claude-3-5-haiku-20241022 speed / latency No data input / output $0.074/M/$0.371/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%.
Output
| Features | Text inputImage inputText outputTool calling | Text inputImage inputFile inputText outputTool callingReasoning |
|---|
