Data points: 81
Model compare
The readout for Claude 3.5 Haiku and Claude Haiku 4.5, before the detailed comparison sheet.
Weighted outcome: Claude Haiku 4.5. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
Decision read
Claude Haiku 4.5
Claude Haiku 4.5 has the higher weighted result; Model A / B score 4 to 96.
Evidence depth
81 data points
Includes 8 benchmark rows, 0 audit samples, and 7 provider examples.
Selection signal
Start with Claude Haiku 4.5
The charts below split 15 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 Haiku 4.5: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Model compare | Claude 3.5 Haiku | Claude Haiku 4.5 |
|---|---|---|
| Overall leader | Contender | Leading |
| Weighted overall score | 4.0 pts | 96.0 pts |
| Benchmark category leads | 0 categories | 3 categories |
| Operational advantages | First-token latency | Cheapest input price, Average speed, Free providers, Provider coverage |
| Context window | 200K tokens | 200K tokens |
| Max output | 8.2K tokens | 64K tokens |
| Modalities | Input TextImage Output Text | Input 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 3.5 Haiku | Claude Haiku 4.5 |
|---|---|---|
| Developer | Anthropic | Anthropic |
| Released | Nov 2024 | Oct 2025 |
| Parameters | No data | No data |
| Tokenizer | Claude | Claude |
| Knowledge cutoff | 2024-07-31 | No data |
| OpenRouter ID | anthropic/claude-3.5-haiku | anthropic/claude-haiku-4.5 |
| References | No data | No data |
This report only uses LMSpeed data for Claude 3.5 Haiku and Claude Haiku 4.5: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
Claude 3.5 Haiku
Claude 3.5 Haiku has these operational advantages: First-token latency.
Claude Haiku 4.5
Claude Haiku 4.5 is stronger in benchmark categories (Coding, Reasoning, Math) and operational dimensions (Cheapest input price, Average speed, 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 Haiku 4.5
46
Claude Haiku 4.5
Claude Haiku 4.5 leads by 5.2
Claude Haiku 4.5 leads by 8.2
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 Haiku 4.5
$5.00/M
Rank #106/163 · confidence 4
Claude 3.5 Haiku
winner$1.60/M
Rank #96/163 · confidence 4
Claude Haiku 4.5
$2.00/M
Rank #103/163 · confidence 4
Claude 3.5 Haiku
winner$0.800/M
Rank #97/163 · confidence 4
Claude Haiku 4.5
$1.00/M
Rank #100/163 · confidence 4
Claude 3.5 Haiku
63.4%
Rank #113/125 · confidence 4
Claude Haiku 4.5
winner80.0%
Rank #61/125 · confidence 4
Claude 3.5 Haiku
40.8%
Rank #175/187 · confidence 4
Claude Haiku 4.5
winner64.6%
Rank #130/187 · confidence 4
Claude 3.5 Haiku
3.5%
Rank #176/186 · confidence 4
Claude Haiku 4.5
winner4.3%
Rank #149/186 · confidence 4
Claude 3.5 Haiku
31.4%
Rank #87/115 · confidence 4
Claude Haiku 4.5
winner51.1%
Rank #59/115 · confidence 4
Claude 3.5 Haiku
27.4%
Rank #148/184 · confidence 4
Claude Haiku 4.5
winner34.4%
Rank #114/184 · confidence 4
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | Claude 3.5 Haiku | Claude Haiku 4.5 |
|---|---|---|
| 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 Haiku 4.5 |
|---|---|---|
15 tests | Claude 3.5 Haiku speed / latency 42 tok/s / 2458ms input / output No data | Claude Haiku 4.5 speed / latency 88 tok/s / 2243ms input / output No data |
5 tests | Claude 3.5 Haiku claude-3-5-haiku-latest speed / latency N/A / N/A input / output $0.035/M/$0.174/M | Claude Haiku 4.5 claude-haiku-4-5-20251001 speed / latency 109 tok/s / 2221ms input / output $0.174/M |
0 tests | Claude 3.5 Haiku speed / latency N/A / N/A input / output No data | Claude Haiku 4.5 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 Haiku 4.5 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 Haiku 4.5 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 Haiku 4.5 claude-haiku-4-5-20251001 speed / latency No data input / output $0.137/M | |
Claude 3.5 Haiku claude-3-5-haiku-20241022 speed / latency No data input / output $0.074/M/$0.371/M | Claude Haiku 4.5 claude-haiku-4-5-20251001 speed / latency No data input / output $0.221/M |
Weighted outcome: Claude Haiku 4.5. 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 callingStructured outputsJSON modeReasoning |
|---|
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Claude Haiku 4.5 leads by 3.3
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