Data points: 95
The readout for Claude Haiku 4.5 and GPT-5.4, before the detailed comparison sheet.
Decision read
Claude Haiku 4.5
Claude Haiku 4.5 currently has the stronger profile, with verified wins split 3 to 2.
Evidence depth
95 data points
Includes 8 benchmark rows, 3 audit samples, and 10 provider examples.
Selection signal
Start with Claude Haiku 4.5
The charts below split 21 high-signal samples across speed, scores, and audit health.
Model compare Claude Haiku 4.5 vs GPT-5.4claude-haiku-4-5-vs-gpt-5-4 | Model A Claude Haiku 4.5 | Model B GPT-5.4 |
|---|---|---|
| Overall leader | Leading | Contender |
| Verified metric wins | 3 wins | 2 wins |
| Where it leads | Cheapest input price, Average speed, First-token latency | Provider coverage, Recent tests |
| Model metadata | Claude Haiku 4.5 exposes 200K tokens; notable signals: Text input, Image input, File input, Text output. | GPT-5.4 exposes 1.1M tokens; notable signals: Text input, Image input, File input, Text output. |
| Developer | Anthropic | OpenAI |
| Context window | 200K tokens | 1.1M tokens |
| Max output | 64K tokens | 128K tokens |
| Released | Oct 2025 | Mar 2026 |
| Modalities | Input TextImageFile Output Text | Input TextImageFile Output Text |
| Features | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning |
| 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 |
Third-party benchmark profile synced into LMSpeed; only metrics available for both models are shown.
| Metric | Claude Haiku 4.5 | GPT-5.4 |
|---|---|---|
| GPQA | 64.6%#96 | 92.0%#3 |
| SciCode | 34.4%#78 | 56.6%#3 |
| HLE | 4.3%#93 | 41.6%#4 |
| Time to first answer token | 0.90 s#22 | 134.24 s#111 |
| Input price | $1.00/M#26 | $2.50/M#37 |
| Time to first token | 0.90 s#32 | 134.24 s#110 |
| Output price | $5.00/M#37 | $15.00/M#44 |
| Output speed | 103.5 tok/s#48 | 92.4 tok/s#56 |
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | Claude Haiku 4.5 | GPT-5.4 |
|---|---|---|
TokenessWinner: Claude Haiku 4.5 | Claude Haiku 4.5 claude-haiku-4-5 Audit score 91 7610086100 | GPT-5.4 gpt-5.4 No audit yet |
钠 APIWinner: GPT-5.4 | Claude Haiku 4.5 claude-haiku-4-5 No audit yet | GPT-5.4 gpt-5.4 Audit score 90 1008476100 |
Leonhard APIWinner: 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 |
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 |
|---|---|---|
天宫造物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 |
Sub2API20 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 |
6345ywz API15 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 |
hibestoic15 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 |
N1N15 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 $14.60/M / $73.00/M | GPT-5.4 gpt-5.4-openai-compact speed / latency No data input / output $0/M / $0/M | |
Claude Haiku 4.5 claude-haiku-4.5 speed / latency No data input / output $0/M / $0/M | GPT-5.4 GPT-5.4 speed / latency No data input / output $75.00/M / $75.00/M | |
Claude Haiku 4.5 claude-haiku-4-5-20251001 speed / latency No data input / output $0.0003/M / $0.0014/M | GPT-5.4 gpt-5.4-openai-compact speed / latency No data input / output $0.0007/M / $0.0041/M | |
Claude Haiku 4.5 claude-haiku-4-5-20251001 speed / latency No data input / output $0.0068/M / $0.034/M | GPT-5.4 gpt-5.4 speed / latency No data input / output $0.514/M / $3.08/M | |
Claude Haiku 4.5 claude-haiku-4-5-20251001 speed / latency No data input / output $0.0073/M / $0.0073/M | GPT-5.4 gpt-5.4-openai-compact speed / latency No data input / output $0.365/M / $0.365/M |
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.
| Guidance | Claude Haiku 4.5 | GPT-5.4 |
|---|---|---|
| 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. | GPT-5.4 GPT-5.4 is stronger when you prioritize Provider coverage, Recent tests. |
TL;DR: Claude Haiku 4.5 leads across 95 verifiable data points, including pricing, speed, latency, benchmarks, and provider examples.
Continue from Claude Haiku 4.5 vs GPT-5.4 into nearby model comparisons with enough verified LMSpeed data.
Rankings are based on community-submitted tests and periodic health probes. Advisory only, not official data.
