Data points: 94
Model compare
Claude Haiku 4.5 vs GPT-5.2
The readout for Claude Haiku 4.5 and GPT-5.2, before the detailed comparison sheet.
Key Takeaways
Weighted outcome: GPT-5.2. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
Decision read
GPT-5.2
GPT-5.2 has the higher weighted result; Model A / B score 12 to 88.
Evidence depth
94 data points
Includes 15 benchmark rows, 0 audit samples, and 10 provider examples.
Selection signal
Start with GPT-5.2
The charts below split 25 high-signal samples across speed, scores, and audit health.
Change comparison
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.
Comparison sheet
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.
| Model compare | Claude Haiku 4.5 | GPT-5.2 |
|---|---|---|
| Overall leader | Contender | Leading |
| Weighted overall score | 12.0 pts | 88.0 pts |
| Benchmark category leads | 0 categories | 4 categories |
| Operational advantages | Cheapest input price, Average speed, First-token latency | Free providers, Provider coverage |
| Context window | 200K tokens | 400K tokens |
| Max output | 64K tokens | 128K tokens |
| 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 modeReasoning |
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 metadata
Model metadata
| Model compare | Claude Haiku 4.5 | GPT-5.2 |
|---|---|---|
| Developer | Anthropic | OpenAI |
| Released | Oct 2025 | Dec 2025 |
| 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 |
| References | No data | No data |
When to choose each model
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.
Claude Haiku 4.5
Claude Haiku 4.5 has these operational advantages: Cheapest input price, Average speed, First-token latency.
GPT-5.2
GPT-5.2 is stronger in benchmark categories (Agents, Coding, Reasoning, Math) and operational dimensions (Free providers, Provider coverage).
Benchmark score comparison
Third-party benchmark profile synced into LMSpeed; only metrics available for both models are shown.
Category performance
Compare benchmark category scores on a 0-100 scale. Select a category to inspect the gap.
- Model A coverage
- 4 / 8
- Model B coverage
- 7 / 8
- Shared
- 4 shared categories
Avg. score
Claude Haiku 4.5
45.6
Avg. score
GPT-5.2
51.8
Agents
GPT-5.2 leads by 4.0
Coding
GPT-5.2 leads by 9.6
Reasoning
GPT-5.2 leads by 5.7
Knowledge
GPT-5.2
Math
GPT-5.2 leads by 9.9
Multilingual
No data
Multimodal
GPT-5.2
Instruction following
GPT-5.2
Professional benchmark details
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
Professional benchmark details
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
Claude Haiku 4.5
winner55.0
Rank #66/111 · confidence 1 · eval date 2025-10-15
GPT-5.2
51.0
Rank #78/111 · confidence 4 · eval date 2025-12-11
Claude Haiku 4.5
winner$1.00/M
Rank #113/186 · confidence 4
GPT-5.2
$1.75/M
Rank #140/186 · confidence 4
Claude Haiku 4.5
winner$2.00/M
Rank #121/186 · confidence 4
GPT-5.2
$4.81/M
Rank #155/186 · confidence 4
Claude Haiku 4.5
winner$5.00/M
Rank #127/186 · confidence 4
GPT-5.2
$14.00/M
Rank #156/186 · confidence 4
Claude Haiku 4.5
80.0%
Rank #63/129 · confidence 4
GPT-5.2
winner87.4%
Rank #11/129 · confidence 4
Claude Haiku 4.5
4.2%
Rank #177/216 · confidence 4
GPT-5.2
winner8.0%
Rank #134/216 · confidence 4
Claude Haiku 4.5
64.6%
Rank #158/218 · confidence 4
GPT-5.2
winner71.2%
Rank #138/218 · confidence 4
Claude Haiku 4.5
73.3
Rank #38/49 · confidence 1 · eval date 2025-10-15
GPT-5.2
winner80.0
Rank #14/49 · confidence 4 · eval date 2025-12-11
Claude Haiku 4.5
51.1%
Rank #59/115 · confidence 4
GPT-5.2
winner66.9%
Rank #36/115 · confidence 4
Claude Haiku 4.5
winner54.2
Rank #41/87 · confidence 1 · eval date 2025-10-15
GPT-5.2
46.5
Rank #64/87 · confidence 4 · eval date 2025-12-11
Claude Haiku 4.5
5.9
Rank #36/47 · confidence 1 · eval date 2025-10-15
GPT-5.2
winner40.7
Rank #10/47 · confidence 4 · eval date 2025-12-11
Claude Haiku 4.5
2.1
Rank #33/36 · confidence 1 · eval date 2025-10-15
GPT-5.2
winner18.8
Rank #12/36 · confidence 4 · eval date 2025-12-11
Claude Haiku 4.5
29.0
Rank #50/63 · confidence 1 · eval date 2025-10-15
GPT-5.2
winner57.5
Rank #31/63 · confidence 4 · eval date 2025-12-11
Claude Haiku 4.5
1133.0
Rank #65/78 · confidence 1 · eval date 2025-10-15
GPT-5.2
winner1209.0
Rank #47/78 · confidence 4 · eval date 2025-12-11
Claude Haiku 4.5
16.0
Rank #20/24 · confidence 1 · eval date 2025-10-15
GPT-5.2
winner34.3
Rank #10/24 · confidence 4 · eval date 2025-12-11
API audit comparison
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
API audit comparison
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. | ||
Provider examples
Speed aggregates and input/output pricing share each provider row for real API selection and migration cost checks.
Provider examples
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 |
PackyCode10 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 |
Right Code10 tests | Claude Haiku 4.5 speed / latency N/A / N/A input / output No data | GPT-5.2 speed / latency 53 tok/s / 1877ms 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 |
Claude Haiku 4.5 claude-haiku-4-5-20251001 speed / latency No data input / output $0.150/M/$0.750/M | GPT-5.2 gpt-5.2 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/request | GPT-5.2 gpt-5.2 speed / latency No data input / output $0/request | |
Claude Haiku 4.5 claude-haiku-4-5-20251001 speed / latency No data input / output $0.068/M/$0.342/M | GPT-5.2 gpt-5.2 speed / latency No data input / output $0.0014/request | |
Claude Haiku 4.5 claude-haiku-4-5 speed / latency No data input / output $0.685/M/$3.42/M | GPT-5.2 gpt-5.2 speed / latency No data input / output $0.0034/M/$0.027/M | |
Claude Haiku 4.5 claude-haiku-4-5 speed / latency No data input / output $0.034/M/$0.171/M | GPT-5.2 gpt-5.2 speed / latency No data input / output $0.0068/request |
FAQ
Weighted outcome: GPT-5.2. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
- Why is this comparison indexable?
- It has 6 verifiable comparison points, and both models have pricing or benchmark data.
- Are missing metrics invented?
- No. Metrics without LMSpeed data are omitted from this report.