Data points: 82
The readout for GPT-4.1 Nano and GPT-4o, before the detailed comparison sheet.
Decision read
GPT-4.1 Nano
GPT-4.1 Nano currently has the stronger profile, with verified wins split 3 to 2.
Evidence depth
82 data points
Includes 8 benchmark rows, 0 audit samples, and 8 provider examples.
Selection signal
Start with GPT-4.1 Nano
The charts below split 16 high-signal samples across speed, scores, and audit health.
Model compare GPT-4.1 Nano vs GPT-4ogpt-4-1-nano-vs-gpt-4o | Model A GPT-4.1 Nano | Model B GPT-4o |
|---|---|---|
| Overall leader | Leading | Contender |
| Verified metric wins | 3 wins | 2 wins |
| Where it leads | Cheapest input price, Average speed, First-token latency | Provider coverage, Recent tests |
Third-party benchmark profile synced into LMSpeed; only metrics available for both models are shown.
| Metric | GPT-4.1 Nano | GPT-4o |
|---|---|---|
| Time to first answer token | 0.47 s#5 |
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 |
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.
| Guidance | GPT-4.1 Nano | GPT-4o |
|---|---|---|
| When to choose each model | GPT-4.1 Nano GPT-4.1 Nano is stronger when you prioritize Cheapest input price, Average speed, First-token latency. | GPT-4o GPT-4o is stronger when you prioritize Provider coverage, Recent tests. |
TL;DR: GPT-4.1 Nano leads across 82 verifiable data points, including pricing, speed, latency, benchmarks, and provider examples.
Continue from GPT-4.1 Nano vs GPT-4o into nearby model comparisons with enough verified LMSpeed data.
| Model metadata | GPT-4.1 Nano exposes 1.0M tokens; notable signals: Text input, Image input, File input, Text output. | GPT-4o exposes 128K tokens; notable signals: Text input, Image input, File input, Text output. |
|---|---|---|
| Developer | OpenAI | OpenAI |
| Context window | 1.0M tokens | 128K tokens |
| Max output | 32.8K tokens | 16.4K tokens |
| Released | Apr 2025 | Nov 2024 |
| Modalities | Input ImageTextFile Output Text | Input TextImageFile Output Text |
| Features | Text inputImage inputFile inputText outputTool callingStructured outputsJSON mode | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeWeb search |
| 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-2024-11-20 |
| References | No data | No data |
| Input price | $0.100/M#6 | $2.50/M#37 |
|---|
| Output price | $0.400/M#6 | $10.00/M#41 |
|---|
| Time to first token | 0.47 s#7 | 0.51 s#11 |
|---|
| Blended price | $0.175/M#10 | $4.38/M#60 |
|---|
| AIME | 23.7%#38 | 15.0%#41 |
|---|
| MATH-500 | 84.8%#38 | 75.9%#47 |
|---|
| Output speed | 125.3 tok/s#41 | 125.9 tok/s#39 |
|---|
speed / latency
82 tok/s / 3100ms
input / output
No data
SWT-API75 tests | GPT-4.1 Nano gpt-4.1-nano speed / latency 127 tok/s / 2007ms input / output $0.0001/M / $0.0001/M | GPT-4o gpt-4o speed / latency N/A / N/A input / output $0.0013/M / $0.0050/M |
|---|
V-API25 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 |
|---|
速创API20 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 |
|---|
ChatGTP5 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 $0.0001/M / $0.0001/M | GPT-4o gpt-4o speed / latency No data input / output $0.0013/M / $0.0050/M |
GPT-4.1 Nano gpt-4.1-nano-2025-04-14 speed / latency No data input / output $0.0041/M / $0.016/M | GPT-4o gpt-4o-2024-05-13 speed / latency No data input / output $0.205/M / $0.616/M |
GPT-4.1 Nano gpt-4.1-nano speed / latency No data input / output $0.0068/M / $0.027/M | GPT-4o gpt-4o speed / latency No data input / output $0.171/M / $0.685/M |
Rankings are based on community-submitted tests and periodic health probes. Advisory only, not official data.
