Data points: 146
Model compare
The readout for GPT-5.4 and GPT-5.4 Nano, 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 78.6 to 21.4.
Evidence depth
146 data points
Includes 38 benchmark rows, 1 audit samples, and 7 provider examples.
Selection signal
Start with GPT-5.4
The charts below split 46 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-5.4 and GPT-5.4 Nano: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Model compare | GPT-5.4 | GPT-5.4 Nano |
|---|---|---|
| Overall leader | Leading | Contender |
| Weighted overall score | 78.6 pts | 21.4 pts |
| Benchmark category leads | 6 categories | 1 categories |
| Operational advantages | Free providers, Provider coverage | Average speed, First-token latency |
| Context window | 1.1M tokens | 400K tokens |
| Max output | 128K 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 | GPT-5.4 | GPT-5.4 Nano |
|---|---|---|
| Developer | OpenAI | OpenAI |
| Released | Mar 2026 | Mar 2026 |
| Parameters | No data | No data |
| Tokenizer | GPT | GPT |
| Knowledge cutoff | No data | 2025-08-31 |
| OpenRouter ID | openai/gpt-5.4 | openai/gpt-5.4-nano |
| References | No data | No data |
This report only uses LMSpeed data for GPT-5.4 and GPT-5.4 Nano: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
GPT-5.4
GPT-5.4 is stronger in benchmark categories (Agents, Coding, Reasoning, Knowledge, Math) and operational dimensions (Free providers, Provider coverage).
GPT-5.4 Nano
GPT-5.4 Nano is stronger in benchmark categories (Instruction following) and operational dimensions (Average speed, First-token latency).
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-5.4
57.6
Avg. score
GPT-5.4 Nano
46.4
GPT-5.4 leads by 11.9
GPT-5.4 leads by 13.2
GPT-5.4 leads by 6.7
GPT-5.4 leads by 16.1
GPT-5.4 leads by 5.8
No data
GPT-5.4 leads by 25.6
GPT-5.4 Nano leads by 0.8
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
GPT-5.4
winner67.0
Rank #22/90 · confidence 3 · eval date 2026-03-05
GPT-5.4 Nano
38.0
Rank #89/90 · confidence 2 · eval date 2026-03-17
GPT-5.4
$2.50/M
Rank #137/169 · confidence 4
GPT-5.4 Nano
winner$0.200/M
Rank #28/169 · confidence 4
GPT-5.4
$5.63/M
Rank #141/169 · confidence 4
GPT-5.4 Nano
winner$0.463/M
Rank #39/169 · confidence 4
GPT-5.4
$15.00/M
Rank #142/169 · confidence 4
GPT-5.4 Nano
winner$1.25/M
Rank #51/169 · confidence 4
GPT-5.4
winner74.0
Rank #6/94 · confidence 3 · eval date 2026-03-05
GPT-5.4 Nano
66.0
Rank #43/94 · confidence 2 · eval date 2026-03-17
GPT-5.4
winner23.4
Rank #8/77 · confidence 3 · eval date 2026-03-05
GPT-5.4 Nano
9.3
Rank #26/77 · confidence 2 · eval date 2026-03-17
GPT-5.4
10.6%
Rank #97/193 · confidence 4
GPT-5.4 Nano
winner26.5%
Rank #45/193 · confidence 4
GPT-5.4
74.8%
Rank #102/194 · confidence 4
GPT-5.4 Nano
winner81.7%
Rank #74/194 · confidence 4
GPT-5.4
winner67.4
Rank #3/33 · confidence 3 · eval date 2026-03-05
GPT-5.4 Nano
26.1
Rank #16/33 · confidence 2 · eval date 2026-03-17
GPT-5.4
winner56.6
Rank #5/101 · confidence 3 · eval date 2026-03-05
GPT-5.4 Nano
46.9
Rank #36/101 · confidence 2 · eval date 2026-03-17
GPT-5.4
winner71.0
Rank #13/64 · confidence 3 · eval date 2026-03-05
GPT-5.4 Nano
56.1
Rank #28/64 · confidence 2 · eval date 2026-03-17
GPT-5.4
42.4
Rank #58/71 · confidence 3 · eval date 2026-03-05
GPT-5.4 Nano
winner58.3
Rank #22/71 · confidence 2 · eval date 2026-03-17
GPT-5.4
winner47.1%
Rank #27/191 · confidence 4
GPT-5.4 Nano
46.9%
Rank #30/191 · confidence 4
GPT-5.4
winner47.6
Rank #7/47 · confidence 3 · eval date 2026-03-05
GPT-5.4 Nano
25.9
Rank #23/47 · confidence 2 · eval date 2026-03-17
GPT-5.4
winner27.1
Rank #8/35 · confidence 3 · eval date 2026-03-05
GPT-5.4 Nano
6.3
Rank #20/35 · confidence 2 · eval date 2026-03-17
GPT-5.4
winner65.9
Rank #18/57 · confidence 3 · eval date 2026-03-05
GPT-5.4 Nano
44.3
Rank #34/57 · confidence 2 · eval date 2026-03-17
GPT-5.4
winner41.6
Rank #10/101 · confidence 3 · eval date 2026-03-05
GPT-5.4 Nano
26.5
Rank #43/101 · confidence 2 · eval date 2026-03-17
GPT-5.4
winner50.0
Rank #11/95 · confidence 3 · eval date 2026-03-05
GPT-5.4 Nano
25.4
Rank #59/95 · confidence 2 · eval date 2026-03-17
GPT-5.4
winner51.4
Rank #11/104 · confidence 3 · eval date 2026-03-05
GPT-5.4 Nano
38.2
Rank #40/104 · confidence 2 · eval date 2026-03-17
GPT-5.4
winner92.0
Rank #13/101 · confidence 3 · eval date 2026-03-05
GPT-5.4 Nano
81.7
Rank #62/101 · confidence 2 · eval date 2026-03-17
GPT-5.4
winner39.8
Rank #13/18 · confidence 3 · eval date 2026-03-05
GPT-5.4 Nano
24.3
Rank #18/18 · confidence 2 · eval date 2026-03-17
GPT-5.4
winner88.6
Rank #18/95 · confidence 3 · eval date 2026-03-05
GPT-5.4 Nano
73.6
Rank #50/95 · confidence 2 · eval date 2026-03-17
GPT-5.4
winner77.3
Rank #18/60 · confidence 3 · eval date 2026-03-05
GPT-5.4 Nano
54.9
Rank #49/60 · confidence 2 · eval date 2026-03-17
GPT-5.4
winner82.1
Rank #4/9 · confidence 3 · eval date 2026-03-05
GPT-5.4 Nano
69.5
Rank #9/9 · confidence 2 · eval date 2026-03-17
GPT-5.4
winner81.2
Rank #6/28 · confidence 3 · eval date 2026-03-05
GPT-5.4 Nano
66.1
Rank #27/28 · confidence 2 · eval date 2026-03-17
GPT-5.4
winner68.5
Rank #17/40 · confidence 3 · eval date 2026-03-05
GPT-5.4 Nano
16.5
Rank #39/40 · confidence 2 · eval date 2026-03-17
GPT-5.4
winner78.4
Rank #19/61 · confidence 3 · eval date 2026-03-05
GPT-5.4 Nano
65.4
Rank #48/61 · confidence 2 · eval date 2026-03-17
GPT-5.4
73.9
Rank #24/86 · confidence 3 · eval date 2026-03-05
GPT-5.4 Nano
winner75.9
Rank #16/86 · confidence 2 · eval date 2026-03-17
GPT-5.4
winner98.9
Rank #2/84 · confidence 3 · eval date 2026-03-05
GPT-5.4 Nano
92.5
Rank #32/84 · confidence 2 · eval date 2026-03-17
GPT-5.4
winner54.6
Rank #6/22 · confidence 3 · eval date 2026-03-05
GPT-5.4 Nano
35.5
Rank #20/22 · confidence 2 · eval date 2026-03-17
GPT-5.4
winner33.3
Rank #7/24 · confidence 3 · eval date 2026-03-05
GPT-5.4 Nano
24.9
Rank #12/24 · confidence 2 · eval date 2026-03-17
GPT-5.4
winner75.0
Rank #9/24 · confidence 3 · eval date 2026-03-05
GPT-5.4 Nano
39.0
Rank #24/24 · confidence 2 · eval date 2026-03-17
GPT-5.4
winner41.1
Rank #13/60 · confidence 3 · eval date 2026-03-05
GPT-5.4 Nano
27.5
Rank #30/60 · confidence 2 · eval date 2026-03-17
GPT-5.4
winner75.1
Rank #13/50 · confidence 3 · eval date 2026-03-05
GPT-5.4 Nano
46.3
Rank #45/50 · confidence 2 · eval date 2026-03-17
GPT-5.4
winner44.6
Rank #14/55 · confidence 3 · eval date 2026-03-05
GPT-5.4 Nano
30.1
Rank #34/55 · confidence 2 · eval date 2026-03-17
GPT-5.4
winner1392.0
Rank #14/60 · confidence 3 · eval date 2026-03-05
GPT-5.4 Nano
1101.0
Rank #34/60 · confidence 2 · eval date 2026-03-17
GPT-5.4
winner70.6
Rank #16/26 · confidence 3 · eval date 2026-03-05
GPT-5.4 Nano
56.1
Rank #20/26 · confidence 2 · eval date 2026-03-17
GPT-5.4
winner74.7
Rank #17/59 · confidence 3 · eval date 2026-03-05
GPT-5.4 Nano
16.8
Rank #56/59 · confidence 2 · eval date 2026-03-17
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | GPT-5.4 | GPT-5.4 Nano |
|---|---|---|
Winner: GPT-5.4 | GPT-5.4 gpt-5.4 Audit score 93 1008486100 | GPT-5.4 Nano gpt-5.4-nano-2026-03-17 No audit yet |
Speed aggregates and input/output pricing share each provider row for real API selection and migration cost checks.
| Provider | GPT-5.4 | GPT-5.4 Nano |
|---|---|---|
100 tests | GPT-5.4 speed / latency 57 tok/s / 3556ms input / output No data | GPT-5.4 Nano speed / latency N/A / N/A input / output No data |
20 tests | GPT-5.4 speed / latency 51 tok/s / 4032ms input / output No data | GPT-5.4 Nano speed / latency N/A / N/A input / output No data |
20 tests | GPT-5.4 speed / latency 34 tok/s / 1748ms input / output No data | GPT-5.4 Nano speed / latency N/A / N/A input / output No data |
15 tests | GPT-5.4 speed / latency 41 tok/s / 6581ms input / output No data | GPT-5.4 Nano speed / latency N/A / N/A input / output No data |
10 tests | GPT-5.4 speed / latency 54 tok/s / 1369ms input / output No data | GPT-5.4 Nano speed / latency N/A / N/A input / output No data |
GPT-5.4 gpt-5-4 speed / latency No data input / output $0/M/$0/M | GPT-5.4 Nano gpt-5.4-nano speed / latency No data input / output $0.016/M | |
GPT-5.4 gpt-5.4 speed / latency No data input / output $0/request | GPT-5.4 Nano gpt-5.4-nano speed / latency No data input / output $0/request |
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 |
|---|
