Data points: 139
Model compare
The readout for GPT-5.2 and GPT-5.4, before the detailed comparison sheet.
Weighted outcome: GPT-5.4. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
Decision read
GPT-5.4
GPT-5.4 has the higher weighted result; Model A / B score 25.4 to 74.6.
Evidence depth
139 data points
Includes 35 benchmark rows, 1 audit samples, and 7 provider examples.
Selection signal
Start with GPT-5.4
The charts below split 43 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-5.2 and GPT-5.4: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Model compare | GPT-5.2 | GPT-5.4 |
|---|---|---|
| Overall leader | Contender | Leading |
| Weighted overall score | 25.4 pts | 74.6 pts |
| Benchmark category leads | 1 categories | 6 categories |
| Operational advantages | Average speed, First-token latency, Free providers | Provider coverage |
| Context window | 400K tokens | 1.1M tokens |
| Max output | 128K tokens | 128K tokens |
| Modalities | Input FileImageText 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-5.2 | GPT-5.4 |
|---|---|---|
| Developer | OpenAI | OpenAI |
| Released | Dec 2025 | Mar 2026 |
| Parameters | No data | No data |
| Tokenizer | GPT | GPT |
| Knowledge cutoff | No data | No data |
| OpenRouter ID | openai/gpt-5.2 | openai/gpt-5.4 |
| References | No data | No data |
This report only uses LMSpeed data for GPT-5.2 and GPT-5.4: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
GPT-5.2
GPT-5.2 is stronger in benchmark categories (Instruction following) and operational dimensions (Average speed, First-token latency, Free providers).
GPT-5.4
GPT-5.4 is stronger in benchmark categories (Agents, Coding, Reasoning, Knowledge, Math) and operational dimensions (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-5.2
52.8
Avg. score
GPT-5.4
57.4
GPT-5.4 leads by 8.2
GPT-5.4 leads by 6.4
GPT-5.4 leads by 2.1
GPT-5.4 leads by 3.1
GPT-5.4 leads by 1.7
No data
GPT-5.4 leads by 10.9
GPT-5.2 leads by 0.6
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
GPT-5.2
53.0
Rank #50/84 · confidence 3 · eval date 2025-12-11
GPT-5.4
winner67.0
Rank #19/84 · confidence 3 · eval date 2026-03-05
GPT-5.2
winner$1.75/M
Rank #120/162 · confidence 4
GPT-5.4
$2.50/M
Rank #131/162 · confidence 4
GPT-5.2
winner$4.81/M
Rank #132/162 · confidence 4
GPT-5.4
$5.63/M
Rank #135/162 · confidence 4
GPT-5.2
winner$14.00/M
Rank #133/162 · confidence 4
GPT-5.4
$15.00/M
Rank #136/162 · confidence 4
GPT-5.2
72.7
Rank #13/89 · confidence 3 · eval date 2025-12-11
GPT-5.4
winner74.0
Rank #6/89 · confidence 3 · eval date 2026-03-05
GPT-5.2
52.9
Rank #12/15 · confidence 3 · eval date 2025-12-11
GPT-5.4
winner74.0
Rank #7/15 · confidence 3 · eval date 2026-03-05
GPT-5.2
11.6
Rank #20/73 · confidence 3 · eval date 2025-12-11
GPT-5.4
winner23.4
Rank #7/73 · confidence 3 · eval date 2026-03-05
GPT-5.2
61.4
Rank #22/25 · confidence 3 · eval date 2025-12-11
GPT-5.4
winner78.9
Rank #16/25 · confidence 3 · eval date 2026-03-05
GPT-5.2
7.3%
Rank #109/187 · confidence 4
GPT-5.4
winner10.6%
Rank #91/187 · confidence 4
GPT-5.2
71.2%
Rank #110/188 · confidence 4
GPT-5.4
winner74.8%
Rank #96/188 · confidence 4
GPT-5.2
53.5
Rank #6/33 · confidence 3 · eval date 2025-12-11
GPT-5.4
winner67.4
Rank #3/33 · confidence 3 · eval date 2026-03-05
GPT-5.2
52.1
Rank #18/96 · confidence 3 · eval date 2025-12-11
GPT-5.4
winner56.6
Rank #4/96 · confidence 3 · eval date 2026-03-05
GPT-5.2
55.6
Rank #25/37 · confidence 3 · eval date 2025-12-11
GPT-5.4
winner57.7
Rank #15/37 · confidence 3 · eval date 2026-03-05
GPT-5.2
40.4%
Rank #64/185 · confidence 4
GPT-5.4
winner47.1%
Rank #24/185 · confidence 4
GPT-5.2
winner52.2
Rank #34/65 · confidence 3 · eval date 2025-12-11
GPT-5.4
42.4
Rank #53/65 · confidence 3 · eval date 2026-03-05
GPT-5.2
40.7
Rank #10/47 · confidence 3 · eval date 2025-12-11
GPT-5.4
winner47.6
Rank #7/47 · confidence 3 · eval date 2026-03-05
GPT-5.2
18.8
Rank #11/35 · confidence 3 · eval date 2025-12-11
GPT-5.4
winner27.1
Rank #8/35 · confidence 3 · eval date 2026-03-05
GPT-5.2
58.5
Rank #24/56 · confidence 3 · eval date 2025-12-11
GPT-5.4
winner65.9
Rank #17/56 · confidence 3 · eval date 2026-03-05
GPT-5.2
35.4
Rank #21/96 · confidence 3 · eval date 2025-12-11
GPT-5.4
winner41.6
Rank #8/96 · confidence 3 · eval date 2026-03-05
GPT-5.2
43.8
Rank #16/90 · confidence 3 · eval date 2025-12-11
GPT-5.4
winner50.0
Rank #9/90 · confidence 3 · eval date 2026-03-05
GPT-5.2
42.2
Rank #22/99 · confidence 3 · eval date 2025-12-11
GPT-5.4
winner51.4
Rank #10/99 · confidence 3 · eval date 2026-03-05
GPT-5.2
90.3
Rank #19/96 · confidence 3 · eval date 2025-12-11
GPT-5.4
winner92.0
Rank #11/96 · confidence 3 · eval date 2026-03-05
GPT-5.2
winner80.8
Rank #11/55 · confidence 3 · eval date 2025-12-11
GPT-5.4
77.3
Rank #16/55 · confidence 3 · eval date 2026-03-05
GPT-5.2
79.7
Rank #39/90 · confidence 3 · eval date 2025-12-11
GPT-5.4
winner88.6
Rank #18/90 · confidence 3 · eval date 2026-03-05
GPT-5.2
79.5
Rank #10/27 · confidence 3 · eval date 2025-12-11
GPT-5.4
winner81.2
Rank #6/27 · confidence 3 · eval date 2026-03-05
GPT-5.2
82.1
Rank #8/22 · confidence 3 · eval date 2025-12-11
GPT-5.4
winner82.8
Rank #7/22 · confidence 3 · eval date 2026-03-05
GPT-5.2
winner70.3
Rank #11/35 · confidence 3 · eval date 2025-12-11
GPT-5.4
68.5
Rank #14/35 · confidence 3 · eval date 2026-03-05
GPT-5.2
1224.0
Rank #37/66 · confidence 3 · eval date 2025-12-11
GPT-5.4
winner1250.0
Rank #31/66 · confidence 3 · eval date 2026-03-05
GPT-5.2
winner75.4
Rank #21/86 · confidence 3 · eval date 2025-12-11
GPT-5.4
73.9
Rank #24/86 · confidence 3 · eval date 2026-03-05
GPT-5.2
46.5
Rank #29/50 · confidence 3 · eval date 2025-12-11
GPT-5.4
winner64.9
Rank #4/50 · confidence 3 · eval date 2026-03-05
GPT-5.2
34.3
Rank #7/20 · confidence 3 · eval date 2025-12-11
GPT-5.4
winner38.9
Rank #4/20 · confidence 3 · eval date 2026-03-05
GPT-5.2
47.3
Rank #20/21 · confidence 3 · eval date 2025-12-11
GPT-5.4
winner75.0
Rank #7/21 · confidence 3 · eval date 2026-03-05
GPT-5.2
22.0
Rank #48/53 · confidence 3 · eval date 2025-12-11
GPT-5.4
winner74.7
Rank #14/53 · confidence 3 · eval date 2026-03-05
GPT-5.2
65.8
Rank #19/25 · confidence 3 · eval date 2025-12-11
GPT-5.4
winner82.7
Rank #14/25 · confidence 3 · eval date 2026-03-05
GPT-5.2
84.8
Rank #44/84 · confidence 3 · eval date 2025-12-11
GPT-5.4
winner87.1
Rank #37/84 · confidence 3 · eval date 2026-03-05
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | GPT-5.2 | GPT-5.4 |
|---|---|---|
Winner: GPT-5.4 | GPT-5.2 gpt-5.2-chat No audit yet | GPT-5.4 gpt-5.4 Audit score 93 1008486100 |
Speed aggregates and input/output pricing share each provider row for real API selection and migration cost checks.
| Provider | GPT-5.2 | GPT-5.4 |
|---|---|---|
125 tests | GPT-5.2 speed / latency N/A / N/A input / output No data | GPT-5.4 speed / latency 49 tok/s / 6084ms input / output No data |
100 tests | GPT-5.2 speed / latency N/A / N/A input / output No data | GPT-5.4 speed / latency 57 tok/s / 3556ms input / output No data |
50 tests | GPT-5.2 speed / latency N/A / N/A input / output No data | GPT-5.4 speed / latency 50 tok/s / 7305ms input / output No data |
35 tests | GPT-5.2 speed / latency N/A / N/A input / output No data | GPT-5.4 speed / latency 50 tok/s / 2467ms input / output No data |
35 tests | GPT-5.2 speed / latency 52 tok/s / 2671ms input / output No data | GPT-5.4 speed / latency 49 tok/s / 5435ms input / output No data |
GPT-5.2 gpt-5.2-chat-latest speed / latency No data input / output $0/M/$0/M | GPT-5.4 gpt-5.4 speed / latency No data input / output $1.82/M | |
GPT-5.2 gpt-5.2 speed / latency No data input / output $0/M/$0/M | GPT-5.4 gpt-5.4 speed / latency No data input / output $0/M |
Weighted outcome: GPT-5.4. 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 |
|---|
