Data points: 126
Model compare
The readout for GPT-4.1 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 8 to 92.
Evidence depth
126 data points
Includes 23 benchmark rows, 3 audit samples, and 7 provider examples.
Selection signal
Start with GPT-5.4
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-5.4: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Model compare | GPT-4.1 | GPT-5.4 |
|---|---|---|
| Overall leader | Contender | Leading |
| Weighted overall score | 8.0 pts | 92.0 pts |
| Benchmark category leads | 0 categories | 6 categories |
| Operational advantages | Average speed, First-token latency | Cheapest input price, Free providers, Provider coverage |
| Context window | 1.0M tokens | 1.1M 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-5.4 |
|---|---|---|
| Developer | OpenAI | OpenAI |
| Released | Apr 2025 | Mar 2026 |
| Parameters | No data | No data |
| Tokenizer | GPT | GPT |
| Knowledge cutoff | 2024-06-30 | No data |
| OpenRouter ID | openai/gpt-4.1 | openai/gpt-5.4 |
| References | No data | No data |
This report only uses LMSpeed data for GPT-4.1 and GPT-5.4: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
GPT-4.1
GPT-4.1 has these operational advantages: Average speed, First-token latency.
GPT-5.4
GPT-5.4 is stronger in benchmark categories (Agents, Coding, Reasoning, Knowledge, Math) 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-5.4
57.4
GPT-5.4 leads by 16.6
GPT-5.4 leads by 24.4
GPT-5.4 leads by 7.5
GPT-5.4 leads by 2.9
GPT-5.4 leads by 8.5
No data
GPT-5.4
GPT-5.4 leads by 12.2
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-5.4
winner67.0
Rank #19/84 · confidence 3 · eval date 2026-03-05
GPT-4.1
winner$8.00/M
Rank #114/162 · confidence 4
GPT-5.4
$15.00/M
Rank #136/162 · confidence 4
GPT-4.1
winner$3.50/M
Rank #123/162 · confidence 4
GPT-5.4
$5.63/M
Rank #135/162 · confidence 4
GPT-4.1
winner$2.00/M
Rank #123/162 · confidence 4
GPT-5.4
$2.50/M
Rank #131/162 · confidence 4
GPT-4.1
61.0
Rank #56/89 · confidence 1 · eval date 2025-04-14
GPT-5.4
winner74.0
Rank #6/89 · confidence 3 · eval date 2026-03-05
GPT-4.1
4.6%
Rank #142/187 · confidence 4
GPT-5.4
winner10.6%
Rank #91/187 · confidence 4
GPT-4.1
66.6%
Rank #126/188 · confidence 4
GPT-5.4
winner74.8%
Rank #96/188 · confidence 4
GPT-4.1
38.1
Rank #67/96 · confidence 1 · eval date 2025-04-14
GPT-5.4
winner56.6
Rank #4/96 · confidence 3 · eval date 2026-03-05
GPT-4.1
38.1%
Rank #91/185 · confidence 4
GPT-5.4
winner47.1%
Rank #24/185 · confidence 4
GPT-4.1
23.3
Rank #61/65 · confidence 1 · eval date 2025-04-14
GPT-5.4
winner42.4
Rank #53/65 · confidence 3 · eval date 2026-03-05
GPT-4.1
5.5
Rank #37/47 · confidence 1 · eval date 2025-04-14
GPT-5.4
winner47.6
Rank #7/47 · confidence 3 · eval date 2026-03-05
GPT-4.1
28.3
Rank #47/56 · confidence 1 · eval date 2025-04-14
GPT-5.4
winner65.9
Rank #17/56 · confidence 3 · eval date 2026-03-05
GPT-4.1
4.6
Rank #82/96 · confidence 1 · eval date 2025-04-14
GPT-5.4
winner41.6
Rank #8/96 · confidence 3 · eval date 2026-03-05
GPT-4.1
24.2
Rank #62/90 · confidence 1 · eval date 2025-04-14
GPT-5.4
winner50.0
Rank #9/90 · confidence 3 · eval date 2026-03-05
GPT-4.1
19.4
Rank #75/99 · confidence 1 · eval date 2025-04-14
GPT-5.4
winner51.4
Rank #10/99 · confidence 3 · eval date 2026-03-05
GPT-4.1
66.6
Rank #80/96 · confidence 1 · eval date 2025-04-14
GPT-5.4
winner92.0
Rank #11/96 · confidence 3 · eval date 2026-03-05
GPT-4.1
54.8
Rank #46/55 · confidence 1 · eval date 2025-04-14
GPT-5.4
winner77.3
Rank #16/55 · confidence 3 · eval date 2026-03-05
GPT-4.1
79.6
Rank #41/90 · confidence 1 · eval date 2025-04-14
GPT-5.4
winner88.6
Rank #18/90 · confidence 3 · eval date 2026-03-05
GPT-4.1
61.2
Rank #49/57 · confidence 1 · eval date 2025-04-14
GPT-5.4
winner78.4
Rank #16/57 · confidence 3 · eval date 2026-03-05
GPT-4.1
1068.0
Rank #58/66 · confidence 1 · eval date 2025-04-14
GPT-5.4
winner1250.0
Rank #31/66 · confidence 3 · eval date 2026-03-05
GPT-4.1
43.0
Rank #64/86 · confidence 1 · eval date 2025-04-14
GPT-5.4
winner73.9
Rank #24/86 · confidence 3 · eval date 2026-03-05
GPT-4.1
25.6
Rank #50/50 · confidence 1 · eval date 2025-04-14
GPT-5.4
winner64.9
Rank #4/50 · confidence 3 · eval date 2026-03-05
GPT-4.1
47.1
Rank #68/84 · confidence 1 · eval date 2025-04-14
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-4.1 | GPT-5.4 |
|---|---|---|
Winner: GPT-5.4 | GPT-4.1 gpt-4.1 No audit yet | GPT-5.4 gpt-5.4 Audit score 100 100100100100 |
Winner: GPT-5.4 | GPT-4.1 gpt-4.1 No audit yet | GPT-5.4 gpt-5.4 Audit score 93 1008486100 |
Winner: GPT-4.1 | GPT-4.1 gpt-4.1 Audit score 78 70728088 | GPT-5.4 gpt-5.4 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-5.4 |
|---|---|---|
120 tests | GPT-4.1 speed / latency 81 tok/s / 1822ms input / output No data | GPT-5.4 speed / latency N/A / N/A input / output No data |
20 tests | GPT-4.1 speed / latency N/A / N/A input / output No data | GPT-5.4 speed / latency 51 tok/s / 4032ms input / output No data |
10 tests | GPT-4.1 speed / latency N/A / N/A input / output No data | GPT-5.4 speed / latency 88 tok/s / 6075ms input / output No data |
10 tests | GPT-4.1 speed / latency N/A / N/A input / output No data | GPT-5.4 speed / latency 55 tok/s / 2903ms input / output No data |
10 tests | GPT-4.1 speed / latency N/A / N/A input / output No data | GPT-5.4 speed / latency 54 tok/s / 1369ms input / output No data |
GPT-4.1 gpt-4.1 speed / latency No data input / output $0/M/$0/M | GPT-5.4 gpt-5.4 speed / latency No data input / output $0.240/M | |
GPT-4.1 gpt-4.1 speed / latency No data input / output $0/request | GPT-5.4 gpt-5.4 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 mode | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning |
|---|
