Data points: 125
Model compare
The readout for Claude Haiku 4.5 and GPT-5.4, before the detailed comparison sheet.
Weighted outcome: GPT-5.4. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
Decision read
GPT-5.4
GPT-5.4 has the higher weighted result; Model A / B score 14 to 86.
Evidence depth
125 data points
Includes 13 benchmark rows, 6 audit samples, and 7 provider examples.
Selection signal
Start with GPT-5.4
The charts below split 26 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 GPT-5.4: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Model compare | Claude Haiku 4.5 | GPT-5.4 |
|---|---|---|
| Overall leader | Contender | Leading |
| Weighted overall score | 14.0 pts | 86.0 pts |
| Benchmark category leads | 0 categories | 4 categories |
| Operational advantages | Cheapest input price, Average speed, First-token latency | Provider coverage |
| Context window | 200K tokens | 1.1M 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 | GPT-5.4 |
|---|---|---|
| Developer | Anthropic | OpenAI |
| Released | Oct 2025 | Mar 2026 |
| Parameters | No data | No data |
| Tokenizer | Claude | GPT |
| Knowledge cutoff | No data | No data |
| OpenRouter ID | anthropic/claude-haiku-4.5 | openai/gpt-5.4 |
| References | No data | No data |
This report only uses LMSpeed data for Claude Haiku 4.5 and GPT-5.4: 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.
GPT-5.4
GPT-5.4 is stronger in benchmark categories (Agents, Coding, Reasoning, Math) and operational dimensions (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 Haiku 4.5
45.8
Avg. score
GPT-5.4
57.6
GPT-5.4 leads by 14.9
GPT-5.4 leads by 16.2
GPT-5.4 leads by 8.8
GPT-5.4
GPT-5.4 leads by 11.9
No data
GPT-5.4
GPT-5.4
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
Claude Haiku 4.5
53.0
Rank #57/91 · confidence 1 · eval date 2025-10-15
GPT-5.4
winner67.0
Rank #22/91 · confidence 3 · eval date 2026-03-05
Claude Haiku 4.5
winner$1.00/M
Rank #103/170 · confidence 4
GPT-5.4
$2.50/M
Rank #139/170 · confidence 4
Claude Haiku 4.5
winner$2.00/M
Rank #106/170 · confidence 4
GPT-5.4
$5.63/M
Rank #143/170 · confidence 4
Claude Haiku 4.5
winner$5.00/M
Rank #111/170 · confidence 4
GPT-5.4
$15.00/M
Rank #144/170 · confidence 4
Claude Haiku 4.5
4.3%
Rank #157/194 · confidence 4
GPT-5.4
winner10.6%
Rank #98/194 · confidence 4
Claude Haiku 4.5
64.6%
Rank #138/195 · confidence 4
GPT-5.4
winner74.8%
Rank #104/195 · confidence 4
Claude Haiku 4.5
34.4%
Rank #122/192 · confidence 4
GPT-5.4
winner47.1%
Rank #28/192 · confidence 4
Claude Haiku 4.5
winner49.2
Rank #47/72 · confidence 1 · eval date 2025-10-15
GPT-5.4
42.4
Rank #59/72 · confidence 3 · eval date 2026-03-05
Claude Haiku 4.5
5.9
Rank #36/47 · confidence 1 · eval date 2025-10-15
GPT-5.4
winner47.6
Rank #7/47 · confidence 3 · eval date 2026-03-05
Claude Haiku 4.5
2.1
Rank #32/35 · confidence 1 · eval date 2025-10-15
GPT-5.4
winner27.1
Rank #8/35 · confidence 3 · eval date 2026-03-05
Claude Haiku 4.5
29.3
Rank #45/58 · confidence 1 · eval date 2025-10-15
GPT-5.4
winner66.0
Rank #19/58 · confidence 3 · eval date 2026-03-05
Claude Haiku 4.5
1147.0
Rank #54/69 · confidence 1 · eval date 2025-10-15
GPT-5.4
winner1245.0
Rank #35/69 · confidence 3 · eval date 2026-03-05
Claude Haiku 4.5
16.0
Rank #17/21 · confidence 1 · eval date 2025-10-15
GPT-5.4
winner38.9
Rank #5/21 · confidence 3 · eval date 2026-03-05
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | Claude Haiku 4.5 | GPT-5.4 |
|---|---|---|
Winner: GPT-5.4 | Claude Haiku 4.5 claude-haiku-4-5-20251001 No audit yet | GPT-5.4 gpt-5.4 Audit score 100 100100100100 |
Winner: Claude Haiku 4.5 | Claude Haiku 4.5 claude-haiku-4-5 Audit score 94 76100100100 | GPT-5.4 gpt-5.4 Audit score 88 84 |
Winner: GPT-5.4 | Claude Haiku 4.5 claude-haiku-4-5-20251001 No audit yet | GPT-5.4 gpt-5.4 Audit score 93 1008486100 |
Winner: GPT-5.4 | Claude Haiku 4.5 [按次特价]claude-haiku-4-5 No audit yet | GPT-5.4 gpt-5.4 Audit score 90 1008476100 |
Winner: Claude Haiku 4.5 | Claude Haiku 4.5 claude-haiku-4.5 Audit score 84 648410088 | GPT-5.4 gpt-5.4 No audit yet |
Winner: GPT-5.4 | Claude Haiku 4.5 claude-haiku-4-5-20251001 No audit yet | GPT-5.4 gpt-5.4 Audit score 83 727980100 |
Speed aggregates and input/output pricing share each provider row for real API selection and migration cost checks.
| Provider | Claude Haiku 4.5 | GPT-5.4 |
|---|---|---|
50 tests | Claude Haiku 4.5 speed / latency N/A / N/A input / output No data | GPT-5.4 speed / latency 50 tok/s / 7305ms input / output No data |
20 tests | Claude Haiku 4.5 speed / latency N/A / N/A input / output No data | GPT-5.4 speed / latency 34 tok/s / 1748ms input / output No data |
15 tests | Claude Haiku 4.5 speed / latency N/A / N/A input / output No data | GPT-5.4 speed / latency 41 tok/s / 6581ms input / output No data |
15 tests | Claude Haiku 4.5 speed / latency N/A / N/A input / output No data | GPT-5.4 speed / latency 62 tok/s / 3351ms input / output No data |
15 tests | Claude Haiku 4.5 speed / latency 112 tok/s / 1733ms input / output No data | GPT-5.4 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/M/$0/M | GPT-5.4 gpt-5.4-openai-compact speed / latency No data input / output $0/M | |
Claude Haiku 4.5 claude-haiku-4-5-20251001 speed / latency No data input / output $0/request | GPT-5.4 gpt-5.4 speed / latency No data input / output $0/request |
Weighted outcome: GPT-5.4. 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 |
|---|
