Data points: 85
The readout for Claude Haiku 4.5 and Claude Opus 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 6 to 0.
Evidence depth
85 data points
Includes 8 benchmark rows, 1 audit samples, and 9 provider examples.
Selection signal
Start with Claude Haiku 4.5
The charts below split 18 high-signal samples across speed, scores, and audit health.
Model compare Claude Haiku 4.5 vs Claude Opus 4.5claude-haiku-4-5-vs-claude-opus-4-5 | Model A Claude Haiku 4.5 | Model B Claude Opus 4.5 |
|---|---|---|
| Overall leader | Leading | Contender |
| Verified metric wins | 6 wins | 0 wins |
| Where it leads | 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 Haiku 4.5 | Claude Opus 4.5 |
|---|---|---|
| MMLU-Pro | 80.0%#40 |
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | Claude Haiku 4.5 | Claude Opus 4.5 |
|---|---|---|
Winner: Claude Opus 4.5 | Claude Haiku 4.5 claude-haiku-4-5-20251001 No audit yet | Claude Opus 4.5 claude-opus-4-5-20251101 |
Speed aggregates and input/output pricing share each provider row for real API selection and migration cost checks.
| Provider | Claude Haiku 4.5 | Claude Opus 4.5 |
|---|---|---|
30 tests | Claude Haiku 4.5 speed / latency 112 tok/s / 1733ms input / output No data |
This report only uses LMSpeed data for Claude Haiku 4.5 and Claude Opus 4.5: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Guidance | Claude Haiku 4.5 | Claude Opus 4.5 |
|---|---|---|
| When to choose each model | 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. | Claude Opus 4.5 Claude Opus 4.5 does not clearly lead on the verified metrics here, so check provider-specific pricing before choosing. |
TL;DR: Claude Haiku 4.5 leads across 85 verifiable data points, including pricing, speed, latency, benchmarks, and provider examples.
Continue from Claude Haiku 4.5 vs Claude Opus 4.5 into nearby model comparisons with enough verified LMSpeed data.
| No data |
| Model metadata | Claude Haiku 4.5 exposes 200K tokens; notable signals: Text input, Image input, File input, Text output. | Claude Opus 4.5 exposes 200K tokens; notable signals: Text input, Image input, File input, Text output. |
|---|---|---|
| Developer | Anthropic | Anthropic |
| Context window | 200K tokens | 200K tokens |
| Max output | 64K tokens | 64K tokens |
| Released | Oct 2025 | Nov 2025 |
| Modalities | Input TextImageFile Output Text | Input FileImageText Output Text |
| Features | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning | Text inputImage inputFile inputText outputTool callingStructured outputsJSON mode |
| Parameters | No data | No data |
| Tokenizer | Claude | Claude |
| Knowledge cutoff | No data | No data |
| OpenRouter ID | anthropic/claude-haiku-4.5 | anthropic/claude-opus-4.5 |
| References | No data | No data |
| SciCode | 34.4%#78 | 47.0%#15 |
|---|
| Time to first answer token | 0.90 s#22 | 1.31 s#32 |
|---|
| Input price | $1.00/M#26 | $5.00/M#41 |
|---|
| LiveCodeBench | 51.1%#55 | 73.8%#26 |
|---|
| Time to first token | 0.90 s#32 | 1.31 s#53 |
|---|
| Output price | $5.00/M#37 | $25.00/M#47 |
|---|
| Output speed | 103.5 tok/s#48 | 50.4 tok/s#88 |
|---|
Audit score
90
Claude Opus 4.5
speed / latency
56 tok/s / 2598ms
input / output
No data
Fangyuan API10 tests | Claude Haiku 4.5 speed / latency 88 tok/s / 2243ms input / output No data | Claude Opus 4.5 speed / latency N/A / N/A input / output No data |
|---|
Rnglg2 API10 tests | Claude Haiku 4.5 speed / latency 160 tok/s / 2639ms input / output No data | Claude Opus 4.5 speed / latency 70 tok/s / 4078ms input / output No data |
|---|
Completions5 tests | Claude Haiku 4.5 speed / latency 21 tok/s / 1170ms input / output No data | Claude Opus 4.5 speed / latency N/A / N/A input / output No data |
|---|
GLM BigModel Relay5 tests | Claude Haiku 4.5 speed / latency N/A / N/A input / output No data | Claude Opus 4.5 speed / latency 52 tok/s / 5332ms input / output No data |
|---|
Claude Haiku 4.5 claude-haiku-4.5 speed / latency No data input / output $0/M / $0/M | Claude Opus 4.5 claude-opus-4.5 speed / latency No data input / output $0/M / $0/M |
Claude Haiku 4.5 claude-haiku-4-5-20251001 speed / latency No data input / output $0.140/M / $0.700/M | Claude Opus 4.5 claude-opus-4.5 speed / latency No data input / output $0/M / $0/M |
Claude Haiku 4.5 claude-haiku-4-5-20251001 speed / latency No data input / output $0/M / $0/M | Claude Opus 4.5 claude-opus-4-5-20251101 speed / latency No data input / output $0/M / $0/M |
Claude Haiku 4.5 claude-haiku-4-5-20251001 speed / latency No data input / output $0.0003/M / $0.0014/M | Claude Opus 4.5 claude-opus-4-5-20251101 speed / latency No data input / output $0.0014/M / $0.0068/M |
Rankings are based on community-submitted tests and periodic health probes. Advisory only, not official data.
