Data points: 110
Model compare
The readout for GPT-4.1 Nano and GPT-4o, before the detailed comparison sheet.
Weighted outcome: GPT-4o. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
Decision read
GPT-4o
GPT-4o has the higher weighted result; Model A / B score 25.3 to 74.7.
Evidence depth
110 data points
Includes 22 benchmark rows, 0 audit samples, and 7 provider examples.
Selection signal
Start with GPT-4o
The charts below split 29 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 Nano and GPT-4o: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Model compare | GPT-4.1 Nano | GPT-4o |
|---|---|---|
| Overall leader | Contender | Leading |
| Weighted overall score | 25.3 pts | 74.7 pts |
| Benchmark category leads | 1 categories | 5 categories |
| Operational advantages | Cheapest input price, Average speed, First-token latency | Free providers, Provider coverage |
| Context window | 1.0M tokens | 128K tokens |
| Max output | 32.8K tokens | 16.4K 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 Nano | GPT-4o |
|---|---|---|
| Developer | OpenAI | OpenAI |
| Released | Apr 2025 | Nov 2024 |
| Parameters | No data | No data |
| Tokenizer | GPT | GPT |
| Knowledge cutoff | 2024-06-30 | 2023-10-31 |
| OpenRouter ID | openai/gpt-4.1-nano | openai/gpt-4o |
| References | No data | No data |
This report only uses LMSpeed data for GPT-4.1 Nano and GPT-4o: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
GPT-4.1 Nano
GPT-4.1 Nano is stronger in benchmark categories (Math) and operational dimensions (Cheapest input price, Average speed, First-token latency).
GPT-4o
GPT-4o is stronger in benchmark categories (Agents, Coding, Reasoning, Knowledge, Instruction following) and operational dimensions (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 Nano
37.9
Avg. score
GPT-4o
43.2
GPT-4o leads by 5.9
GPT-4o leads by 5.6
GPT-4o leads by 2.5
GPT-4o leads by 16.0
GPT-4.1 Nano leads by 3.0
No data
No data
GPT-4o leads by 4.5
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
GPT-4.1 Nano
winner48.0
Rank #63/84 · confidence 1 · eval date 2025-04-14
GPT-4o
43.0
Rank #76/84 · confidence 1 · eval date 2024-05-13
GPT-4.1 Nano
winner$0.100/M
Rank #8/162 · confidence 4
GPT-4o
$2.50/M
Rank #131/162 · confidence 4
GPT-4.1 Nano
winner$0.175/M
Rank #12/162 · confidence 4
GPT-4o
$4.38/M
Rank #127/162 · confidence 4
GPT-4.1 Nano
winner$0.400/M
Rank #13/162 · confidence 4
GPT-4o
$10.00/M
Rank #120/162 · confidence 4
GPT-4.1 Nano
65.7%
Rank #111/125 · confidence 4
GPT-4o
winner74.8%
Rank #90/125 · confidence 4
GPT-4.1 Nano
51.2%
Rank #164/188 · confidence 4
GPT-4o
winner54.3%
Rank #156/188 · confidence 4
GPT-4.1 Nano
winner3.9%
Rank #165/187 · confidence 4
GPT-4o
3.3%
Rank #180/187 · confidence 4
GPT-4.1 Nano
25.9
Rank #91/96 · confidence 1 · eval date 2025-04-14
GPT-4o
winner33.3
Rank #80/96 · confidence 1 · eval date 2024-05-13
GPT-4.1 Nano
winner32.6%
Rank #84/115 · confidence 4
GPT-4o
30.9%
Rank #88/115 · confidence 4
GPT-4.1 Nano
25.9%
Rank #156/185 · confidence 4
GPT-4o
winner33.3%
Rank #120/185 · confidence 4
GPT-4.1 Nano
winner84.8%
Rank #43/74 · confidence 4
GPT-4o
75.9%
Rank #56/74 · confidence 4
GPT-4.1 Nano
winner23.7%
Rank #45/68 · confidence 4
GPT-4o
15.0%
Rank #50/68 · confidence 4
GPT-4.1 Nano
winner1.0
Rank #45/47 · confidence 1 · eval date 2025-04-14
GPT-4o
0.3
Rank #47/47 · confidence 1 · eval date 2024-05-13
GPT-4.1 Nano
winner25.7
Rank #53/56 · confidence 1 · eval date 2025-04-14
GPT-4o
25.4
Rank #54/56 · confidence 1 · eval date 2024-05-13
GPT-4.1 Nano
winner80.4
Rank #36/90 · confidence 1 · eval date 2025-04-14
GPT-4o
37.9
Rank #75/90 · confidence 1 · eval date 2024-05-13
GPT-4.1 Nano
13.3
Rank #88/90 · confidence 1 · eval date 2025-04-14
GPT-4o
winner19.7
Rank #75/90 · confidence 1 · eval date 2024-05-13
GPT-4.1 Nano
9.6
Rank #94/99 · confidence 1 · eval date 2025-04-14
GPT-4o
winner11.2
Rank #90/99 · confidence 1 · eval date 2024-05-13
GPT-4.1 Nano
51.2
Rank #93/96 · confidence 1 · eval date 2025-04-14
GPT-4o
winner54.3
Rank #91/96 · confidence 1 · eval date 2024-05-13
GPT-4.1 Nano
winner3.9
Rank #91/96 · confidence 1 · eval date 2025-04-14
GPT-4o
3.3
Rank #94/96 · confidence 1 · eval date 2024-05-13
GPT-4.1 Nano
winner998.0
Rank #61/66 · confidence 1 · eval date 2025-04-14
GPT-4o
856.0
Rank #65/66 · confidence 1 · eval date 2024-05-13
GPT-4.1 Nano
32.0
Rank #83/86 · confidence 1 · eval date 2025-04-14
GPT-4o
winner34.3
Rank #82/86 · confidence 1 · eval date 2024-05-13
GPT-4.1 Nano
17.3
Rank #82/84 · confidence 1 · eval date 2025-04-14
GPT-4o
winner25.1
Rank #75/84 · confidence 1 · eval date 2024-05-13
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | GPT-4.1 Nano | GPT-4o |
|---|---|---|
| No completed audits are available from shared providers yet. | ||
Speed aggregates and input/output pricing share each provider row for real API selection and migration cost checks.
| Provider | GPT-4.1 Nano | GPT-4o |
|---|---|---|
82 tests | GPT-4.1 Nano speed / latency N/A / N/A input / output No data | GPT-4o speed / latency 82 tok/s / 3100ms input / output No data |
75 tests | GPT-4.1 Nano speed / latency 127 tok/s / 2007ms input / output No data | GPT-4o speed / latency N/A / N/A input / output No data |
25 tests | GPT-4.1 Nano speed / latency 162 tok/s / 1284ms input / output No data | GPT-4o speed / latency N/A / N/A input / output No data |
20 tests | GPT-4.1 Nano speed / latency N/A / N/A input / output No data | GPT-4o speed / latency 88 tok/s / 1593ms input / output No data |
5 tests | GPT-4.1 Nano speed / latency 222 tok/s / 800ms input / output No data | GPT-4o speed / latency N/A / N/A input / output No data |
GPT-4.1 Nano gpt-4.1-nano speed / latency No data input / output $0/request | GPT-4o gpt-4o speed / latency No data input / output $0/request | |
GPT-4.1 Nano gpt-4.1-nano-2025-04-14 speed / latency No data input / output $0.0024/M/$0.0096/M | GPT-4o gpt-4o-2024-05-13 speed / latency No data input / output $3.42/M |
Weighted outcome: GPT-4o. 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 modeWeb search |
|---|
