Data points: 129
Model compare
The readout for GPT-5.2 and GPT-5.4 Mini, 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 50.3 to 49.7.
Evidence depth
129 data points
Includes 27 benchmark rows, 2 audit samples, and 7 provider examples.
Selection signal
Start with GPT-5.2
The charts below split 36 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 Mini: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Model compare | GPT-5.2 | GPT-5.4 Mini |
|---|---|---|
| Overall leader | Leading | Contender |
| Weighted overall score | 50.3 pts | 49.7 pts |
| Benchmark category leads | 3 categories | 4 categories |
| Operational advantages | Cheapest input price, First-token latency, Free providers, Provider coverage | Average speed |
| Context window | 400K tokens | 400K tokens |
| Max output | 128K tokens | 128K tokens |
| Modalities | Input FileImageText Output Text | Input |
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 Mini |
|---|---|---|
| Developer | OpenAI | OpenAI |
| Released | Dec 2025 | Mar 2026 |
| Parameters | No data | No data |
| Tokenizer | GPT | GPT |
| Knowledge cutoff | No data | 2025-08-31 |
| OpenRouter ID | openai/gpt-5.2 | openai/gpt-5.4-mini |
| References | No data | No data |
This report only uses LMSpeed data for GPT-5.2 and GPT-5.4 Mini: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
GPT-5.2
GPT-5.2 is stronger in benchmark categories (Knowledge, Math, Instruction following) and operational dimensions (Cheapest input price, First-token latency, Free providers, Provider coverage).
GPT-5.4 Mini
GPT-5.4 Mini is stronger in benchmark categories (Agents, Coding, Reasoning, Multimodal) and operational dimensions (Average speed).
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 Mini
51.9
GPT-5.4 Mini leads by 3.0
GPT-5.4 Mini leads by 1.3
GPT-5.4 Mini leads by 1.8
GPT-5.2 leads by 9.4
GPT-5.2 leads by 6.2
No data
GPT-5.4 Mini leads by 3.5
GPT-5.2 leads by 0.8
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 Mini
winner58.0
Rank #36/84 · confidence 3 · eval date 2026-03-17
GPT-5.2
$4.81/M
Rank #132/162 · confidence 4
GPT-5.4 Mini
winner$1.69/M
Rank #95/162 · confidence 4
GPT-5.2
$1.75/M
Rank #120/162 · confidence 4
GPT-5.4 Mini
winner$0.750/M
Rank #95/162 · confidence 4
GPT-5.2
$14.00/M
Rank #133/162 · confidence 4
GPT-5.4 Mini
winner$4.50/M
Rank #102/162 · confidence 4
GPT-5.2
winner72.7
Rank #13/89 · confidence 3 · eval date 2025-12-11
GPT-5.4 Mini
69.3
Rank #23/89 · confidence 3 · eval date 2026-03-17
GPT-5.2
winner11.6
Rank #20/73 · confidence 3 · eval date 2025-12-11
GPT-5.4 Mini
10.0
Rank #21/73 · confidence 3 · eval date 2026-03-17
GPT-5.2
71.2%
Rank #110/188 · confidence 4
GPT-5.4 Mini
winner82.3%
Rank #64/188 · confidence 4
GPT-5.2
7.3%
Rank #109/187 · confidence 4
GPT-5.4 Mini
winner17.1%
Rank #65/187 · confidence 4
GPT-5.2
winner53.5
Rank #6/33 · confidence 3 · eval date 2025-12-11
GPT-5.4 Mini
48.0
Rank #10/33 · confidence 3 · eval date 2026-03-17
GPT-5.2
winner52.1
Rank #18/96 · confidence 3 · eval date 2025-12-11
GPT-5.4 Mini
49.9
Rank #23/96 · confidence 3 · eval date 2026-03-17
GPT-5.2
52.2
Rank #34/65 · confidence 3 · eval date 2025-12-11
GPT-5.4 Mini
winner54.3
Rank #30/65 · confidence 3 · eval date 2026-03-17
GPT-5.2
40.4%
Rank #64/185 · confidence 4
GPT-5.4 Mini
winner44.2%
Rank #38/185 · confidence 4
GPT-5.2
winner40.7
Rank #10/47 · confidence 3 · eval date 2025-12-11
GPT-5.4 Mini
28.3
Rank #20/47 · confidence 3 · eval date 2026-03-17
GPT-5.2
winner18.8
Rank #11/35 · confidence 3 · eval date 2025-12-11
GPT-5.4 Mini
2.1
Rank #35/35 · confidence 3 · eval date 2026-03-17
GPT-5.2
winner58.5
Rank #24/56 · confidence 3 · eval date 2025-12-11
GPT-5.4 Mini
44.7
Rank #32/56 · confidence 3 · eval date 2026-03-17
GPT-5.2
winner80.8
Rank #11/55 · confidence 3 · eval date 2025-12-11
GPT-5.4 Mini
60.2
Rank #39/55 · confidence 3 · eval date 2026-03-17
GPT-5.2
79.7
Rank #39/90 · confidence 3 · eval date 2025-12-11
GPT-5.4 Mini
winner89.8
Rank #13/90 · confidence 3 · eval date 2026-03-17
GPT-5.2
winner43.8
Rank #16/90 · confidence 3 · eval date 2025-12-11
GPT-5.4 Mini
37.5
Rank #32/90 · confidence 3 · eval date 2026-03-17
GPT-5.2
winner90.3
Rank #19/96 · confidence 3 · eval date 2025-12-11
GPT-5.4 Mini
87.5
Rank #34/96 · confidence 3 · eval date 2026-03-17
GPT-5.2
winner35.4
Rank #21/96 · confidence 3 · eval date 2025-12-11
GPT-5.4 Mini
26.6
Rank #38/96 · confidence 3 · eval date 2026-03-17
GPT-5.2
winner42.2
Rank #22/99 · confidence 3 · eval date 2025-12-11
GPT-5.4 Mini
40.0
Rank #31/99 · confidence 3 · eval date 2026-03-17
GPT-5.2
winner79.5
Rank #10/27 · confidence 3 · eval date 2025-12-11
GPT-5.4 Mini
76.6
Rank #21/27 · confidence 3 · eval date 2026-03-17
GPT-5.2
winner70.3
Rank #11/35 · confidence 3 · eval date 2025-12-11
GPT-5.4 Mini
59.2
Rank #24/35 · confidence 3 · eval date 2026-03-17
GPT-5.2
winner75.4
Rank #21/86 · confidence 3 · eval date 2025-12-11
GPT-5.4 Mini
73.3
Rank #26/86 · confidence 3 · eval date 2026-03-17
GPT-5.2
47.3
Rank #20/21 · confidence 3 · eval date 2025-12-11
GPT-5.4 Mini
winner72.1
Rank #11/21 · confidence 3 · eval date 2026-03-17
GPT-5.2
22.0
Rank #48/53 · confidence 3 · eval date 2025-12-11
GPT-5.4 Mini
winner55.7
Rank #29/53 · confidence 3 · eval date 2026-03-17
GPT-5.2
winner84.8
Rank #44/84 · confidence 3 · eval date 2025-12-11
GPT-5.4 Mini
83.3
Rank #49/84 · confidence 3 · eval date 2026-03-17
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | GPT-5.2 | GPT-5.4 Mini |
|---|---|---|
Winner: GPT-5.4 Mini | GPT-5.2 gpt-5.2-2025-12-11 No audit yet | GPT-5.4 Mini gpt-5.4-mini Audit score 97 10010086100 |
Winner: GPT-5.4 Mini | GPT-5.2 gpt-5.2-chat No audit yet | GPT-5.4 Mini gpt-5.4-mini 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 Mini |
|---|---|---|
25 tests | GPT-5.2 speed / latency N/A / N/A input / output No data | GPT-5.4 Mini speed / latency 139 tok/s / 2844ms input / output No data |
20 tests | GPT-5.2 speed / latency 52 tok/s / 2671ms input / output No data | GPT-5.4 Mini speed / latency 223 tok/s / 3411ms input / output No data |
15 tests | GPT-5.2 speed / latency N/A / N/A input / output No data | GPT-5.4 Mini speed / latency 128 tok/s / 4452ms input / output No data |
15 tests | GPT-5.2 speed / latency 56 tok/s / 1798ms input / output No data | GPT-5.4 Mini speed / latency N/A / N/A input / output No data |
15 tests | GPT-5.2 speed / latency N/A / N/A input / output No data | GPT-5.4 Mini speed / latency 108 tok/s / 1950ms input / output No data |
GPT-5.2 gpt-5.2 speed / latency No data input / output $0/M/$0/M | GPT-5.4 Mini gpt-5.4-mini speed / latency No data input / output $0.547/M | |
GPT-5.2 gpt-5.2-openai-compact speed / latency No data input / output $0/M/$0/M | GPT-5.4 Mini gpt-5.4-mini speed / latency No data input / output $0/M |
Weighted outcome: GPT-5.2. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
Output
| Features | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning |
|---|
