Data points: 120
Model compare
The readout for GPT-4.1 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 21.3 to 78.7.
Evidence depth
120 data points
Includes 25 benchmark rows, 1 audit samples, and 7 provider examples.
Selection signal
Start with GPT-5.2
The charts below split 33 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 GPT-4.1 and GPT-5.2: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Model compare | GPT-4.1 | GPT-5.2 |
|---|---|---|
| Overall leader | Contender | Leading |
| Weighted overall score | 21.3 pts | 78.7 pts |
| Benchmark category leads | 1 categories | 5 categories |
| Operational advantages | Average speed, First-token latency | Cheapest input price, Free providers, Provider coverage |
| Context window | 1.0M tokens | 400K tokens |
| Max output | 32.8K tokens | 128K tokens |
| Modalities | Input ImageTextFile 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 | GPT-4.1 | GPT-5.2 |
|---|---|---|
| Developer | OpenAI | OpenAI |
| Released | Apr 2025 | Dec 2025 |
| Parameters | No data | No data |
| Tokenizer | GPT | GPT |
| Knowledge cutoff | 2024-06-30 | No data |
| OpenRouter ID | openai/gpt-4.1 | openai/gpt-5.2 |
| References | No data | No data |
This report only uses LMSpeed data for GPT-4.1 and GPT-5.2: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
GPT-4.1
GPT-4.1 is stronger in benchmark categories (Knowledge) and operational dimensions (Average speed, First-token latency).
GPT-5.2
GPT-5.2 is stronger in benchmark categories (Agents, Coding, Reasoning, Math, Instruction following) and operational dimensions (Cheapest input price, 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
GPT-4.1
46
Avg. score
GPT-5.2
52.8
GPT-5.2 leads by 8.4
GPT-5.2 leads by 18.0
GPT-5.2 leads by 5.4
GPT-4.1 leads by 0.2
GPT-5.2 leads by 6.8
No data
GPT-5.2
GPT-5.2 leads by 12.8
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
GPT-4.1
46.0
Rank #65/84 · confidence 1 · eval date 2025-04-14
GPT-5.2
winner53.0
Rank #50/84 · confidence 3 · eval date 2025-12-11
GPT-4.1
winner$8.00/M
Rank #114/162 · confidence 4
GPT-5.2
$14.00/M
Rank #133/162 · confidence 4
GPT-4.1
$2.00/M
Rank #123/162 · confidence 4
GPT-5.2
winner$1.75/M
Rank #120/162 · confidence 4
GPT-4.1
winner$3.50/M
Rank #123/162 · confidence 4
GPT-5.2
$4.81/M
Rank #132/162 · confidence 4
GPT-4.1
61.0
Rank #56/89 · confidence 1 · eval date 2025-04-14
GPT-5.2
winner72.7
Rank #13/89 · confidence 3 · eval date 2025-12-11
GPT-4.1
80.6%
Rank #57/125 · confidence 4
GPT-5.2
winner81.4%
Rank #54/125 · confidence 4
GPT-4.1
4.6%
Rank #142/187 · confidence 4
GPT-5.2
winner7.3%
Rank #109/187 · confidence 4
GPT-4.1
66.6%
Rank #126/188 · confidence 4
GPT-5.2
winner71.2%
Rank #110/188 · confidence 4
GPT-4.1
54.6
Rank #39/43 · confidence 1 · eval date 2025-04-14
GPT-5.2
winner80.0
Rank #12/43 · confidence 3 · eval date 2025-12-11
GPT-4.1
38.1
Rank #67/96 · confidence 1 · eval date 2025-04-14
GPT-5.2
winner52.1
Rank #18/96 · confidence 3 · eval date 2025-12-11
GPT-4.1
23.3
Rank #61/65 · confidence 1 · eval date 2025-04-14
GPT-5.2
winner52.2
Rank #34/65 · confidence 3 · eval date 2025-12-11
GPT-4.1
45.7%
Rank #65/115 · confidence 4
GPT-5.2
winner66.9%
Rank #36/115 · confidence 4
GPT-4.1
38.1%
Rank #91/185 · confidence 4
GPT-5.2
winner40.4%
Rank #64/185 · confidence 4
GPT-4.1
5.5
Rank #37/47 · confidence 1 · eval date 2025-04-14
GPT-5.2
winner40.7
Rank #10/47 · confidence 3 · eval date 2025-12-11
GPT-4.1
28.3
Rank #47/56 · confidence 1 · eval date 2025-04-14
GPT-5.2
winner58.5
Rank #24/56 · confidence 3 · eval date 2025-12-11
GPT-4.1
54.8
Rank #46/55 · confidence 1 · eval date 2025-04-14
GPT-5.2
winner80.8
Rank #11/55 · confidence 3 · eval date 2025-12-11
GPT-4.1
24.2
Rank #62/90 · confidence 1 · eval date 2025-04-14
GPT-5.2
winner43.8
Rank #16/90 · confidence 3 · eval date 2025-12-11
GPT-4.1
66.6
Rank #80/96 · confidence 1 · eval date 2025-04-14
GPT-5.2
winner90.3
Rank #19/96 · confidence 3 · eval date 2025-12-11
GPT-4.1
4.6
Rank #82/96 · confidence 1 · eval date 2025-04-14
GPT-5.2
winner35.4
Rank #21/96 · confidence 3 · eval date 2025-12-11
GPT-4.1
19.4
Rank #75/99 · confidence 1 · eval date 2025-04-14
GPT-5.2
winner42.2
Rank #22/99 · confidence 3 · eval date 2025-12-11
GPT-4.1
79.6
Rank #41/90 · confidence 1 · eval date 2025-04-14
GPT-5.2
winner79.7
Rank #39/90 · confidence 3 · eval date 2025-12-11
GPT-4.1
1068.0
Rank #58/66 · confidence 1 · eval date 2025-04-14
GPT-5.2
winner1224.0
Rank #37/66 · confidence 3 · eval date 2025-12-11
GPT-4.1
43.0
Rank #64/86 · confidence 1 · eval date 2025-04-14
GPT-5.2
winner75.4
Rank #21/86 · confidence 3 · eval date 2025-12-11
GPT-4.1
25.6
Rank #50/50 · confidence 1 · eval date 2025-04-14
GPT-5.2
winner46.5
Rank #29/50 · confidence 3 · eval date 2025-12-11
GPT-4.1
47.1
Rank #68/84 · confidence 1 · eval date 2025-04-14
GPT-5.2
winner84.8
Rank #44/84 · confidence 3 · eval date 2025-12-11
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | GPT-4.1 | GPT-5.2 |
|---|---|---|
Winner: GPT-4.1 | GPT-4.1 gpt-4.1 Audit score 78 70728088 | 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 | GPT-4.1 | GPT-5.2 |
|---|---|---|
120 tests | GPT-4.1 speed / latency 81 tok/s / 1822ms input / output No data | GPT-5.2 speed / latency N/A / N/A input / output No data |
15 tests | GPT-4.1 speed / latency N/A / N/A input / output No data | GPT-5.2 speed / latency 56 tok/s / 1798ms input / output No data |
10 tests | GPT-4.1 speed / latency 79 tok/s / 2301ms input / output No data | GPT-5.2 speed / latency 64 tok/s / 5256ms input / output No data |
10 tests | GPT-4.1 speed / latency N/A / N/A input / output No data | GPT-5.2 speed / latency 94 tok/s / 11492ms input / output No data |
5 tests | GPT-4.1 speed / latency N/A / N/A input / output No data | GPT-5.2 speed / latency 64 tok/s / 3553ms input / output No data |
GPT-4.1 gpt-4.1 speed / latency No data input / output $0/M/$0/M | GPT-5.2 gpt-5.2 speed / latency No data input / output $0.024/M | |
GPT-4.1 gpt-4.1 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 mode | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning |
|---|
