Data points: 137
Model compare
The readout for Claude Haiku 4.5 and Claude Opus 4.8, before the detailed comparison sheet.
Weighted outcome: Claude Opus 4.8. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
Decision read
Claude Opus 4.8
Claude Opus 4.8 has the higher weighted result; Model A / B score 18 to 82.
Evidence depth
137 data points
Includes 19 benchmark rows, 6 audit samples, and 6 provider examples.
Selection signal
Start with Claude Opus 4.8
The charts below split 31 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 4.8: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Model compare | Claude Haiku 4.5 | Claude Opus 4.8 |
|---|---|---|
| Overall leader | Contender | Leading |
| Weighted overall score | 18.0 pts | 82.0 pts |
| Benchmark category leads | 1 categories | 7 categories |
| Operational advantages | Free providers, Provider coverage | Cheapest input price, Average speed, First-token latency |
| Context window | 200K tokens | 1M tokens |
| Max output | 64K tokens | 128K 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 4.8 |
|---|---|---|
| Developer | Anthropic | Anthropic |
| Released | Oct 2025 | May 2026 |
| Parameters | No data | No data |
| Tokenizer | Claude | Claude |
| Knowledge cutoff | No data | No data |
| OpenRouter ID | anthropic/claude-haiku-4.5 | anthropic/claude-opus-4.8 |
| References | No data | No data |
This report only uses LMSpeed data for Claude Haiku 4.5 and Claude Opus 4.8: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
Claude Haiku 4.5
Claude Haiku 4.5 is stronger in benchmark categories (Instruction following) and operational dimensions (Free providers, Provider coverage).
Claude Opus 4.8
Claude Opus 4.8 is stronger in benchmark categories (Agents, Coding, Reasoning, Knowledge, Math) and operational dimensions (Cheapest input price, Average speed, First-token latency).
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
49.4
Avg. score
Claude Opus 4.8
60.8
Claude Opus 4.8 leads by 20.6
Claude Opus 4.8 leads by 19.1
Claude Opus 4.8 leads by 12.4
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
Claude Haiku 4.5
53.0
Rank #65/127 · confidence 1 · eval date 2025-10-15
Claude Opus 4.8
winner84.0
Rank #6/127 · confidence 3 · eval date 2026-05-28
Claude Haiku 4.5
winner0.80 s
Rank #27/139 · confidence 4
Claude Opus 4.8
23.67 s
Rank #96/139 · confidence 4
Claude Haiku 4.5
winner0.80 s
Rank #39/139 · confidence 4
Claude Opus 4.8
23.67 s
Rank #126/139 · confidence 4
Claude Haiku 4.5
winner95.9 tok/s
Rank #61/139 · confidence 4
Claude Opus 4.8
57.4 tok/s
Rank #102/139 · confidence 4
Claude Haiku 4.5
winner$1.00/M
Rank #100/163 · confidence 4
Claude Opus 4.8
$5.00/M
Rank #147/163 · confidence 4
Claude Haiku 4.5
winner$2.00/M
Rank #103/163 · confidence 4
Claude Opus 4.8
$10.00/M
Rank #148/163 · confidence 4
Claude Haiku 4.5
winner$5.00/M
Rank #106/163 · confidence 4
Claude Opus 4.8
$25.00/M
Rank #148/163 · confidence 4
Claude Haiku 4.5
4.3%
Rank #149/186 · confidence 4
Claude Opus 4.8
winner45.7%
Rank #5/186 · confidence 4
Claude Haiku 4.5
64.6%
Rank #130/187 · confidence 4
Claude Opus 4.8
winner92.0%
Rank #10/187 · confidence 4
Claude Haiku 4.5
73.3
Rank #32/43 · confidence 1 · eval date 2025-10-15
Claude Opus 4.8
winner88.6
Rank #2/43 · confidence 3 · eval date 2026-05-28
Claude Haiku 4.5
52.9
Rank #66/100 · confidence 1 · eval date 2025-10-15
Claude Opus 4.8
winner87.3
Rank #5/100 · confidence 3 · eval date 2026-05-28
Claude Haiku 4.5
34.4%
Rank #114/184 · confidence 4
Claude Opus 4.8
winner53.5%
Rank #9/184 · confidence 4
Claude Haiku 4.5
2.1
Rank #32/35 · confidence 1 · eval date 2025-10-15
Claude Opus 4.8
winner31.3
Rank #7/35 · confidence 3 · eval date 2026-05-28
Claude Haiku 4.5
5.9
Rank #36/47 · confidence 1 · eval date 2025-10-15
Claude Opus 4.8
winner47.2
Rank #8/47 · confidence 3 · eval date 2026-05-28
Claude Haiku 4.5
29.5
Rank #46/59 · confidence 1 · eval date 2025-10-15
Claude Opus 4.8
winner73.6
Rank #10/59 · confidence 3 · eval date 2026-05-28
Claude Haiku 4.5
46.8
Rank #69/92 · confidence 1 · eval date 2025-10-15
Claude Opus 4.8
winner88.0
Rank #7/92 · confidence 3 · eval date 2026-05-28
Claude Haiku 4.5
winner72.1
Rank #22/81 · confidence 1 · eval date 2025-10-15
Claude Opus 4.8
66.5
Rank #34/81 · confidence 3 · eval date 2026-05-28
Claude Haiku 4.5
1156.0
Rank #51/65 · confidence 1 · eval date 2025-10-15
Claude Opus 4.8
winner1274.0
Rank #25/65 · confidence 3 · eval date 2026-05-28
Claude Haiku 4.5
42.8
Rank #63/95 · confidence 1 · eval date 2025-10-15
Claude Opus 4.8
winner92.9
Rank #6/95 · confidence 3 · eval date 2026-05-28
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | Claude Haiku 4.5 | Claude Opus 4.8 |
|---|---|---|
Winner: Claude Opus 4.8 | Claude Haiku 4.5 claude-haiku-4-5-20251001 No audit yet | Claude Opus 4.8 claude-opus-4-8 Audit score 100 100100100100 |
Winner: Tie | Claude Haiku 4.5 claude-haiku-4-5 Audit score 91 7610086100 | Claude Opus 4.8 claude-opus-4-8 Audit score 91 76 |
Winner: Claude Opus 4.8 | Claude Haiku 4.5 claude-haiku-4-5-20251001 No audit yet | Claude Opus 4.8 claude-opus-4-8 Audit score 91 7610086100 |
Winner: Claude Opus 4.8 | Claude Haiku 4.5 claude-haiku-4-5 No audit yet | Claude Opus 4.8 claude-opus-4-8 Audit score 87 768486100 |
Winner: Claude Haiku 4.5 | Claude Haiku 4.5 claude-haiku-4.5 Audit score 84 648410088 | Claude Opus 4.8 [按次]claude-opus-4-8 No audit yet |
Winner: Claude Opus 4.8 | Claude Haiku 4.5 claude-haiku-4-5-20251001 No audit yet | Claude Opus 4.8 claude-opus-4-8 Audit score 83 668480100 |
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 4.8 |
|---|---|---|
10 tests | Claude Haiku 4.5 speed / latency N/A / N/A input / output No data | Claude Opus 4.8 speed / latency 882 tok/s / 127ms input / output No data |
10 tests | Claude Haiku 4.5 speed / latency N/A / N/A input / output No data | Claude Opus 4.8 speed / latency 43 tok/s / 2368ms input / output No data |
5 tests | Claude Haiku 4.5 speed / latency N/A / N/A input / output No data | Claude Opus 4.8 speed / latency 50 tok/s / 4823ms input / output No data |
5 tests | Claude Haiku 4.5 speed / latency N/A / N/A input / output No data | Claude Opus 4.8 speed / latency 46 tok/s / 2076ms input / output No data |
5 tests | Claude Haiku 4.5 speed / latency N/A / N/A input / output No data | Claude Opus 4.8 speed / latency 47 tok/s / 3308ms input / output No data |
Claude Haiku 4.5 claude-4-5-haiku-20240307 speed / latency No data input / output $0/M/$0/M | Claude Opus 4.8 claude-opus-4-8 speed / latency No data input / output $40.15/M |
Weighted outcome: Claude Opus 4.8. 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 4.8 leads by 16.9
Claude Opus 4.8 leads by 12.3
Claude Opus 4.8 leads by 8.2
Claude Opus 4.8 leads by 4.2
Claude Haiku 4.5 leads by 2.7
