Data points: 81
The readout for GPT-4.1 Nano and GPT-5.2, before the detailed comparison sheet.
Decision read
Tie
Tie currently has the stronger profile, with verified wins split 3 to 3.
Evidence depth
81 data points
Includes 8 benchmark rows, 0 audit samples, and 8 provider examples.
Selection signal
Tie
The charts below split 16 high-signal samples across speed, scores, and audit health.
Model compare GPT-4.1 Nano vs GPT-5.2gpt-4-1-nano-vs-gpt-5-2 | Model A GPT-4.1 Nano | Model B GPT-5.2 |
|---|---|---|
| Overall leader | Tie | Tie |
| Verified metric wins | 3 wins | 3 wins |
| Where it leads | Cheapest input price, Average speed, First-token latency | Free providers, Provider coverage, Recent tests |
| Model metadata | GPT-4.1 Nano exposes 1.0M tokens; notable signals: Text input, Image input, File input, Text output. | GPT-5.2 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 | Dec 2025 |
| Modalities | Input ImageTextFile Output Text | Input FileImageText Output Text |
| Features | Text inputImage inputFile inputText outputTool callingStructured outputsJSON mode | Text inputImage inputFile inputText outputTool callingStructured outputsJSON mode |
| Parameters | No data | No data |
| Tokenizer | GPT | GPT |
| Knowledge cutoff | 2024-06-30 | No data |
| OpenRouter ID | openai/gpt-4.1-nano | openai/gpt-5.2-chat |
| References | No data | No data |
Third-party benchmark profile synced into LMSpeed; only metrics available for both models are shown.
| Metric | GPT-4.1 Nano | GPT-5.2 |
|---|---|---|
| LiveCodeBench | 32.6%#75 | 88.9%#4 |
| Time to first answer token | 0.47 s#5 | 115.69 s#109 |
| Input price | $0.100/M#6 | $1.75/M#35 |
| MMLU-Pro | 65.7%#71 | 87.4%#6 |
| Output price | $0.400/M#6 | $14.00/M#43 |
| Time to first token | 0.47 s#7 | 115.69 s#108 |
| GPQA | 51.2%#119 | 90.3%#9 |
| HLE | 3.9%#96 | 35.4%#9 |
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | GPT-4.1 Nano | GPT-5.2 |
|---|---|---|
| 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-5.2 |
|---|---|---|
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-5.2 gpt-5.2-chat speed / latency N/A / N/A input / output $0.037/M / $0.300/M |
V-API25 tests | GPT-4.1 Nano speed / latency 162 tok/s / 1284ms input / output No data | GPT-5.2 speed / latency N/A / N/A input / output No data |
N1N15 tests | GPT-4.1 Nano speed / latency N/A / N/A input / output No data | GPT-5.2 speed / latency 56 tok/s / 1798ms input / output No data |
ChatGTP5 tests | GPT-4.1 Nano speed / latency 222 tok/s / 800ms input / output No data | GPT-5.2 speed / latency N/A / N/A input / output No data |
ModelPool5 tests | GPT-4.1 Nano speed / latency N/A / N/A input / output No data | GPT-5.2 speed / latency 64 tok/s / 5256ms 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-5.2 gpt-5.2-chat speed / latency No data input / output $0.037/M / $0.300/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-5.2 gpt-5.2-xhigh speed / latency No data input / output $0.072/M / $0.575/M | |
GPT-4.1 Nano gpt-4.1-nano speed / latency No data input / output $0.0068/M / $0.027/M | GPT-5.2 gpt-5.2 speed / latency No data input / output $0.120/M / $0.959/M |
This report only uses LMSpeed data for GPT-4.1 Nano and GPT-5.2: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Guidance | GPT-4.1 Nano | GPT-5.2 |
|---|---|---|
| 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-5.2 GPT-5.2 is stronger when you prioritize Free providers, Provider coverage, Recent tests. |
TL;DR: Tie leads across 81 verifiable data points, including pricing, speed, latency, benchmarks, and provider examples.
Continue from GPT-4.1 Nano vs GPT-5.2 into nearby model comparisons with enough verified LMSpeed data.
Rankings are based on community-submitted tests and periodic health probes. Advisory only, not official data.
