Data points: 77
Model compare
The readout for Claude 3.5 Haiku 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 4 to 96.
Evidence depth
77 data points
Includes 6 benchmark rows, 0 audit samples, and 8 provider examples.
Selection signal
Start with GPT-5.4
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 3.5 Haiku and GPT-5.4: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Model compare | Claude 3.5 Haiku | GPT-5.4 |
|---|---|---|
| Overall leader | Contender | Leading |
| Weighted overall score | 4.0 pts | 96.0 pts |
| Benchmark category leads | 0 categories | 3 categories |
| Operational advantages | First-token latency | Cheapest input price, Average speed, Free providers, Provider coverage |
| Context window | 200K tokens | 1.1M tokens |
| Max output | 8.2K tokens | 128K tokens |
| Modalities | Input TextImage Output Text | Input |
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 3.5 Haiku | GPT-5.4 |
|---|---|---|
| Developer | Anthropic | OpenAI |
| Released | Nov 2024 | Mar 2026 |
| Parameters | No data | No data |
| Tokenizer | Claude | GPT |
| Knowledge cutoff | 2024-07-31 | No data |
| OpenRouter ID | anthropic/claude-3.5-haiku | openai/gpt-5.4 |
| References | No data | No data |
This report only uses LMSpeed data for Claude 3.5 Haiku and GPT-5.4: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
Claude 3.5 Haiku
Claude 3.5 Haiku has these operational advantages: First-token latency.
GPT-5.4
GPT-5.4 is stronger in benchmark categories (Coding, Reasoning, Math) and operational dimensions (Cheapest input price, Average speed, Free providers, 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 3.5 Haiku
41.4
Avg. score
GPT-5.4
57.8
GPT-5.4
GPT-5.4 leads by 20.9
GPT-5.4 leads by 19.8
GPT-5.4
GPT-5.4 leads by 15.2
No data
GPT-5.4
GPT-5.4
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
Claude 3.5 Haiku
winner$4.00/M
Rank #94/163 · confidence 4
GPT-5.4
$15.00/M
Rank #138/163 · confidence 4
Claude 3.5 Haiku
winner$1.60/M
Rank #96/163 · confidence 4
GPT-5.4
$5.63/M
Rank #137/163 · confidence 4
Claude 3.5 Haiku
winner$0.800/M
Rank #97/163 · confidence 4
GPT-5.4
$2.50/M
Rank #133/163 · confidence 4
Claude 3.5 Haiku
3.5%
Rank #176/186 · confidence 4
GPT-5.4
winner10.6%
Rank #90/186 · confidence 4
Claude 3.5 Haiku
40.8%
Rank #175/187 · confidence 4
GPT-5.4
winner74.8%
Rank #96/187 · confidence 4
Claude 3.5 Haiku
27.4%
Rank #148/184 · confidence 4
GPT-5.4
winner47.1%
Rank #23/184 · confidence 4
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | Claude 3.5 Haiku | GPT-5.4 |
|---|---|---|
| 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 3.5 Haiku | GPT-5.4 |
|---|---|---|
5 tests | Claude 3.5 Haiku speed / latency N/A / N/A input / output No data | GPT-5.4 speed / latency 46 tok/s / 3291ms input / output No data |
5 tests | Claude 3.5 Haiku speed / latency N/A / N/A input / output No data | GPT-5.4 speed / latency 51 tok/s / 6045ms input / output No data |
0 tests | Claude 3.5 Haiku speed / latency N/A / N/A input / output No data | GPT-5.4 speed / latency N/A / N/A input / output No data |
0 tests | Claude 3.5 Haiku speed / latency N/A / N/A input / output No data | GPT-5.4 speed / latency N/A / N/A input / output No data |
0 tests | Claude 3.5 Haiku speed / latency N/A / N/A input / output No data | GPT-5.4 speed / latency N/A / N/A input / output No data |
Claude 3.5 Haiku claude-3-5-haiku-latest speed / latency No data input / output $0.035/M/$0.174/M | GPT-5.4 gpt-5.4-2026-03-05 speed / latency No data input / output $2.60/M | |
Claude 3.5 Haiku claude-3-5-haiku-20241022 speed / latency No data input / output $1.00/M/$5.00/M | GPT-5.4 gpt-5.4 speed / latency No data input / output $0.050/request | |
Claude 3.5 Haiku claude-3-5-haiku-20241022 speed / latency No data input / output $0.074/M/$0.371/M | GPT-5.4 gpt-5.4 speed / latency No data input / output $0.554/M |
Weighted outcome: GPT-5.4. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
Output
| Features | Text inputImage inputText outputTool calling | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning |
|---|
