Data points: 56
The readout for Claude 3.7 Sonnet and Claude Haiku 4.5, before the detailed comparison sheet.
Decision read
Claude Haiku 4.5
Claude Haiku 4.5 currently has the stronger profile, with verified wins split 0 to 6.
Evidence depth
56 data points
Includes 0 benchmark rows, 0 audit samples, and 8 provider examples.
Selection signal
Start with Claude Haiku 4.5
The charts below split 8 high-signal samples across speed, scores, and audit health.
Model compare Claude 3.7 Sonnet vs Claude Haiku 4.5claude-3-7-sonnet-vs-claude-haiku-4-5 | Model A Claude 3.7 Sonnet | Model B Claude Haiku 4.5 |
|---|---|---|
| Overall leader | Contender | Leading |
| Verified metric wins | 0 wins | 6 wins |
| Where it leads | No data | Cheapest input price, Average speed, First-token latency, Free providers, Provider coverage, Recent tests |
Third-party benchmark profile synced into LMSpeed; only metrics available for both models are shown.
| Metric | Claude 3.7 Sonnet | Claude Haiku 4.5 |
|---|---|---|
| No shared benchmark metrics are available yet. | ||
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | Claude 3.7 Sonnet | 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 3.7 Sonnet | Claude Haiku 4.5 |
|---|---|---|
10 tests | Claude 3.7 Sonnet speed / latency N/A / N/A input / output No data |
This report only uses LMSpeed data for Claude 3.7 Sonnet and Claude Haiku 4.5: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Guidance | Claude 3.7 Sonnet | Claude Haiku 4.5 |
|---|---|---|
| When to choose each model | Claude 3.7 Sonnet Claude 3.7 Sonnet does not clearly lead on the verified metrics here, so check provider-specific pricing before choosing. | Claude Haiku 4.5 Claude Haiku 4.5 is stronger when you prioritize Cheapest input price, Average speed, First-token latency, Free providers, Provider coverage, Recent tests. |
TL;DR: Claude Haiku 4.5 leads across 56 verifiable data points, including pricing, speed, latency, benchmarks, and provider examples.
Continue from Claude 3.7 Sonnet vs Claude Haiku 4.5 into nearby model comparisons with enough verified LMSpeed data.
| Model metadata | No OpenRouter metadata is available yet for this model. | Claude Haiku 4.5 exposes 200K tokens; notable signals: Text input, Image input, File input, Text output. |
|---|---|---|
| Developer | Anthropic | Anthropic |
| Context window | No data | 200K tokens |
| Max output | No data | 64K tokens |
| Released | No data | Oct 2025 |
| Modalities | No data | Input TextImageFile Output Text |
| Features | None listed | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning |
| Parameters | No data | No data |
| Tokenizer | No data | Claude |
| Knowledge cutoff | No data | No data |
| OpenRouter ID | No data | anthropic/claude-haiku-4.5 |
| References | No data | No data |
Claude Haiku 4.5
speed / latency
88 tok/s / 2243ms
input / output
No data
My Claude Code5 tests | Claude 3.7 Sonnet claude-3-7-sonnet-latest speed / latency N/A / N/A input / output $0.104/M / $0.521/M | Claude Haiku 4.5 claude-haiku-4-5-20251001 speed / latency 109 tok/s / 2221ms input / output $0.035/M / $0.174/M |
|---|
Rnglg2 API5 tests | Claude 3.7 Sonnet speed / latency N/A / N/A input / output No data | Claude Haiku 4.5 speed / latency 160 tok/s / 2639ms input / output No data |
|---|
3173721 API0 tests | Claude 3.7 Sonnet claude-3-7-sonnet speed / latency N/A / N/A input / output $0.0010/M / $0.0010/M | Claude Haiku 4.5 claude-haiku-4-5-20251001 speed / latency N/A / N/A input / output $1.00/M / $5.00/M |
|---|
AASS API0 tests | Claude 3.7 Sonnet 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 3.7 Sonnet claude-3-7-sonnet-20250219 speed / latency No data input / output $0.257/M / $1.29/M | Claude Haiku 4.5 claude-haiku-4-5-20251001 speed / latency No data input / output $0.086/M / $0.429/M |
Claude 3.7 Sonnet claude-3.7-sonnet speed / latency No data input / output $0.411/M / $2.05/M | Claude Haiku 4.5 claude-haiku-4-5-20251001 speed / latency No data input / output $0.137/M / $0.685/M |
Claude 3.7 Sonnet claude-3-7-sonnet-20250219 speed / latency No data input / output $0.411/M / $2.05/M | Claude Haiku 4.5 claude-haiku-4-5-20251001 speed / latency No data input / output $0.137/M / $0.685/M |
Rankings are based on community-submitted tests and periodic health probes. Advisory only, not official data.
