Data points: 81
Model compare
The readout for Claude Haiku 4.5 and Claude Opus 4.1, before the detailed comparison sheet.
Weighted outcome: Claude Opus 4.1. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
Decision read
Claude Opus 4.1
Claude Opus 4.1 has the higher weighted result; Model A / B score 18 to 82.
Evidence depth
81 data points
Includes 8 benchmark rows, 0 audit samples, and 6 provider examples.
Selection signal
Start with Claude Opus 4.1
The charts below split 14 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 Haiku 4.5 and Claude Opus 4.1: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Model compare | Claude Haiku 4.5 | Claude Opus 4.1 |
|---|---|---|
| Overall leader | Contender | Leading |
| Weighted overall score | 18.0 pts | 82.0 pts |
| Benchmark category leads | 0 categories | 2 categories |
| Operational advantages | Cheapest input price, Average speed, First-token latency, Provider coverage | No data |
| Context window | 200K tokens | 200K tokens |
| Max output | 64K tokens | 32K tokens |
| Modalities | Input TextImageFile 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 Haiku 4.5 | Claude Opus 4.1 |
|---|---|---|
| Developer | Anthropic | Anthropic |
| Released | Oct 2025 | Aug 2025 |
| Parameters | No data | No data |
| Tokenizer | Claude | Claude |
| Knowledge cutoff | No data | 2025-01-31 |
| OpenRouter ID | anthropic/claude-haiku-4.5 | anthropic/claude-opus-4.1 |
| References | No data | No data |
This report only uses LMSpeed data for Claude Haiku 4.5 and Claude Opus 4.1: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
Claude Haiku 4.5
Claude Haiku 4.5 has these operational advantages: Cheapest input price, Average speed, First-token latency, Provider coverage.
Claude Opus 4.1
Claude Opus 4.1 leads these benchmark categories: Agents, Coding.
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 Haiku 4.5
45.9
Avg. score
Claude Opus 4.1
51.4
Claude Opus 4.1 leads by 4.1
Claude Opus 4.1 leads by 0.5
Claude Haiku 4.5
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
Claude Haiku 4.5
53.0
Rank #50/84 · confidence 1 · eval date 2025-10-15
Claude Opus 4.1
winner57.0
Rank #38/84 · confidence 1 · eval date 2025-08-01
Claude Haiku 4.5
winner$1.00/M
Rank #98/162 · confidence 4
Claude Opus 4.1
$15.00/M
Rank #155/162 · confidence 4
Claude Haiku 4.5
winner$2.00/M
Rank #101/162 · confidence 4
Claude Opus 4.1
$30.00/M
Rank #156/162 · confidence 4
Claude Haiku 4.5
winner$5.00/M
Rank #104/162 · confidence 4
Claude Opus 4.1
$75.00/M
Rank #157/162 · confidence 4
Claude Haiku 4.5
73.3
Rank #32/43 · confidence 1 · eval date 2025-10-15
Claude Opus 4.1
winner74.5
Rank #27/43 · confidence 1 · eval date 2025-08-01
Claude Haiku 4.5
49.2
Rank #43/65 · confidence 1 · eval date 2025-10-15
Claude Opus 4.1
winner50.9
Rank #38/65 · confidence 1 · eval date 2025-08-01
Claude Haiku 4.5
1147.0
Rank #51/66 · confidence 1 · eval date 2025-10-15
Claude Opus 4.1
winner1202.0
Rank #42/66 · confidence 1 · eval date 2025-08-01
Claude Haiku 4.5
16.0
Rank #16/20 · confidence 1 · eval date 2025-10-15
Claude Opus 4.1
winner21.9
Rank #13/20 · confidence 1 · eval date 2025-08-01
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | Claude Haiku 4.5 | Claude Opus 4.1 |
|---|---|---|
| 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 Haiku 4.5 | Claude Opus 4.1 |
|---|---|---|
20 tests | Claude Haiku 4.5 speed / latency 112 tok/s / 1733ms input / output No data | Claude Opus 4.1 speed / latency 17 tok/s / 3847ms input / output No data |
10 tests | Claude Haiku 4.5 speed / latency 88 tok/s / 2243ms input / output No data | Claude Opus 4.1 speed / latency N/A / N/A input / output No data |
5 tests | Claude Haiku 4.5 speed / latency 160 tok/s / 2639ms input / output No data | Claude Opus 4.1 speed / latency N/A / N/A input / output No data |
5 tests | Claude Haiku 4.5 speed / latency 91 tok/s / 2614ms input / output No data | Claude Opus 4.1 speed / latency N/A / N/A input / output No data |
5 tests | Claude Haiku 4.5 speed / latency 141 tok/s / 1922ms input / output No data | Claude Opus 4.1 speed / latency N/A / N/A input / output No data |
Claude Haiku 4.5 claude-haiku-4-5-20251001 speed / latency No data input / output $0/request | Claude Opus 4.1 claude-opus-4-1 speed / latency No data input / output $0/request |
Weighted outcome: Claude Opus 4.1. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
Input
Output
| Features | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning |
|---|
Claude Opus 4.1
Claude Haiku 4.5
No data
No data
No data
