Data points: 80
The readout for Claude Haiku 4.5 and GPT-5.2, before the detailed comparison sheet.
Decision read
Claude Haiku 4.5
Claude Haiku 4.5 currently has the stronger profile, with verified wins split 4 to 2.
Evidence depth
80 data points
Includes 8 benchmark rows, 0 audit samples, and 10 provider examples.
Selection signal
Start with Claude Haiku 4.5
The charts below split 18 high-signal samples across speed, scores, and audit health.
Model compare Claude Haiku 4.5 vs GPT-5.2claude-haiku-4-5-vs-gpt-5-2 | Model A Claude Haiku 4.5 | Model B GPT-5.2 |
|---|---|---|
| Overall leader | Leading | Contender |
| Verified metric wins | 4 wins | 2 wins |
| Where it leads | Cheapest input price, Average speed, First-token latency, Free providers | Provider coverage, Recent tests |
| Model metadata | Claude Haiku 4.5 exposes 200K tokens; notable signals: Text input, Image input, File input, Text output. | GPT-5.2 exposes 128K tokens; notable signals: Text input, Image input, File input, Text output. |
| Developer | Anthropic | OpenAI |
| Context window | 200K tokens | 128K tokens |
| Max output | 64K tokens | 16.4K tokens |
| Released | Oct 2025 | Dec 2025 |
| Modalities | Input TextImageFile Output Text | Input FileImageText Output Text |
| Features | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning | Text inputImage inputFile inputText outputTool callingStructured outputsJSON mode |
| Parameters | No data | No data |
| Tokenizer | Claude | GPT |
| Knowledge cutoff | No data | No data |
| OpenRouter ID | anthropic/claude-haiku-4.5 | openai/gpt-5.2-chat |
| 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-5.2 |
|---|---|---|
| LiveCodeBench | 51.1%#55 | 88.9%#4 |
| MMLU-Pro | 80.0%#40 | 87.4%#6 |
| GPQA | 64.6%#96 | 90.3%#9 |
| HLE | 4.3%#93 | 35.4%#9 |
| SciCode | 34.4%#78 | 52.1%#9 |
| Time to first answer token | 0.90 s#22 | 115.69 s#109 |
| Input price | $1.00/M#26 | $1.75/M#35 |
| Time to first token | 0.90 s#32 | 115.69 s#108 |
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | Claude Haiku 4.5 | GPT-5.2 |
|---|---|---|
| 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 | GPT-5.2 |
|---|---|---|
N1N30 tests | Claude Haiku 4.5 speed / latency 112 tok/s / 1733ms input / output No data | GPT-5.2 speed / latency 56 tok/s / 1798ms input / output No data |
PackyAPI10 tests | Claude Haiku 4.5 speed / latency N/A / N/A input / output No data | GPT-5.2 speed / latency 94 tok/s / 11492ms input / output No data |
Rnglg2 API10 tests | Claude Haiku 4.5 speed / latency 160 tok/s / 2639ms input / output No data | GPT-5.2 speed / latency 55 tok/s / 1434ms input / output No data |
发现AI10 tests | Claude Haiku 4.5 speed / latency 68 tok/s / 4647ms input / output No data | GPT-5.2 speed / latency N/A / N/A input / output No data |
小水管 API10 tests | Claude Haiku 4.5 speed / latency 139 tok/s / 12443ms input / output No data | GPT-5.2 speed / latency 71 tok/s / 2893ms input / output No data |
Claude Haiku 4.5 claude-haiku-4.5 speed / latency No data input / output $0/M / $0/M | GPT-5.2 GPT-5.2 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-5.2 gpt-5.2-openai-compact speed / latency No data input / output $0.0005/M / $0.0038/M | |
Claude Haiku 4.5 claude-haiku-4-5 speed / latency No data input / output $0.014/M / $0.014/M | GPT-5.2 gpt-5.2 speed / latency No data input / output $0.010/M / $0.010/M | |
Claude Haiku 4.5 claude-haiku-4-5-20251001 speed / latency No data input / output $0.014/M / $0.068/M | GPT-5.2 gpt-5.2-medium speed / latency No data input / output $0.024/M / $0.192/M | |
Claude Haiku 4.5 claude-haiku-4-5-20251001-c speed / latency No data input / output $0.017/M / $0.017/M | GPT-5.2 gpt-5.2-chat-latest speed / latency No data input / output $1.75/M / $14.00/M |
This report only uses LMSpeed data for Claude Haiku 4.5 and GPT-5.2: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Guidance | Claude Haiku 4.5 | GPT-5.2 |
|---|---|---|
| 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, Free providers. | GPT-5.2 GPT-5.2 is stronger when you prioritize Provider coverage, Recent tests. |
TL;DR: Claude Haiku 4.5 leads across 80 verifiable data points, including pricing, speed, latency, benchmarks, and provider examples.
Continue from Claude Haiku 4.5 vs GPT-5.2 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.
