Data points: 101
Model compare
The readout for Claude Haiku 4.5 and GPT-5.2, before the detailed comparison sheet.
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
101 data points
Includes 16 benchmark rows, 1 audit samples, and 8 provider examples.
Selection signal
Start with GPT-5.2
The charts below split 25 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-5.2: 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 |
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-5.2 |
|---|---|---|
| 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 |
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).
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
45.9
Avg. score
GPT-5.2
52.9
GPT-5.2 leads by 5.3
GPT-5.2 leads by 9.7
GPT-5.2 leads by 6.7
GPT-5.2
GPT-5.2 leads by 10.2
No data
GPT-5.2
GPT-5.2
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
Claude Haiku 4.5
53.0
Rank #50/84 · confidence 1 · eval date 2025-10-15
GPT-5.2
53.0
Rank #50/84 · confidence 3 · eval date 2025-12-11
Claude Haiku 4.5
winner$1.00/M
Rank #98/162 · confidence 4
GPT-5.2
$1.75/M
Rank #120/162 · confidence 4
Claude Haiku 4.5
winner$2.00/M
Rank #101/162 · confidence 4
GPT-5.2
$4.81/M
Rank #132/162 · confidence 4
Claude Haiku 4.5
winner$5.00/M
Rank #104/162 · confidence 4
GPT-5.2
$14.00/M
Rank #133/162 · confidence 4
Claude Haiku 4.5
80.0%
Rank #61/125 · confidence 4
GPT-5.2
winner81.4%
Rank #54/125 · confidence 4
Claude Haiku 4.5
4.3%
Rank #150/187 · confidence 4
GPT-5.2
winner7.3%
Rank #109/187 · confidence 4
Claude Haiku 4.5
64.6%
Rank #131/188 · confidence 4
GPT-5.2
winner71.2%
Rank #110/188 · confidence 4
Claude Haiku 4.5
73.3
Rank #32/43 · confidence 1 · eval date 2025-10-15
GPT-5.2
winner80.0
Rank #12/43 · confidence 3 · eval date 2025-12-11
Claude Haiku 4.5
49.2
Rank #43/65 · confidence 1 · eval date 2025-10-15
GPT-5.2
winner52.2
Rank #34/65 · confidence 3 · 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
34.4%
Rank #115/185 · confidence 4
GPT-5.2
winner40.4%
Rank #64/185 · confidence 4
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 3 · eval date 2025-12-11
Claude Haiku 4.5
2.1
Rank #32/35 · confidence 1 · eval date 2025-10-15
GPT-5.2
winner18.8
Rank #11/35 · confidence 3 · eval date 2025-12-11
Claude Haiku 4.5
29.2
Rank #43/56 · confidence 1 · eval date 2025-10-15
GPT-5.2
winner58.5
Rank #24/56 · confidence 3 · eval date 2025-12-11
Claude Haiku 4.5
1147.0
Rank #51/66 · confidence 1 · eval date 2025-10-15
GPT-5.2
winner1219.0
Rank #35/66 · confidence 3 · eval date 2025-12-11
Claude Haiku 4.5
16.0
Rank #16/20 · confidence 1 · eval date 2025-10-15
GPT-5.2
winner34.3
Rank #7/20 · confidence 3 · eval date 2025-12-11
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | Claude Haiku 4.5 | GPT-5.2 |
|---|---|---|
Winner: Claude Haiku 4.5 | Claude Haiku 4.5 claude-haiku-4.5 Audit score 84 648410088 | GPT-5.2 gpt-5.2 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-5.2 |
|---|---|---|
30 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 |
10 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 |
10 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 |
10 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 |
10 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-4-5-20251001 speed / latency No data input / output $8.03/M/$40.15/M | GPT-5.2 gpt-5.2-2025-12-11 speed / latency No data input / output $0/M | |
Claude Haiku 4.5 claude-haiku-4-5-20251001 speed / latency No data input / output $0/M/$0/M | GPT-5.2 gpt-5.2 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-5.2 gpt-5.2 speed / latency No data input / output $0/request |
Weighted outcome: GPT-5.2. 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 |
|---|
