Data points: 81
The readout for GPT-5.2 and GPT-5.4 Nano, before the detailed comparison sheet.
Decision read
GPT-5.2
GPT-5.2 currently has the stronger profile, with verified wins split 3 to 2.
Evidence depth
81 data points
Includes 8 benchmark rows, 0 audit samples, and 8 provider examples.
Selection signal
Start with GPT-5.2
The charts below split 16 high-signal samples across speed, scores, and audit health.
Model compare GPT-5.2 vs GPT-5.4 Nanogpt-5-2-vs-gpt-5-4-nano | Model A GPT-5.2 | Model B GPT-5.4 Nano |
|---|---|---|
| Overall leader | Leading | Contender |
| Verified metric wins | 3 wins | 2 wins |
| Where it leads | Cheapest input price, Provider coverage, Recent tests | Average speed, First-token latency |
Third-party benchmark profile synced into LMSpeed; only metrics available for both models are shown.
| Metric | GPT-5.2 | GPT-5.4 Nano |
|---|---|---|
| GPQA | 90.3%#9 |
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | GPT-5.2 | GPT-5.4 Nano |
|---|---|---|
| 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-5.2 | GPT-5.4 Nano |
|---|---|---|
15 tests | GPT-5.2 speed / latency 56 tok/s / 1798ms input / output No data | GPT-5.4 Nano |
This report only uses LMSpeed data for GPT-5.2 and GPT-5.4 Nano: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Guidance | GPT-5.2 | GPT-5.4 Nano |
|---|---|---|
| When to choose each model | GPT-5.2 GPT-5.2 is stronger when you prioritize Cheapest input price, Provider coverage, Recent tests. | GPT-5.4 Nano GPT-5.4 Nano is stronger when you prioritize Average speed, First-token latency. |
TL;DR: GPT-5.2 leads across 81 verifiable data points, including pricing, speed, latency, benchmarks, and provider examples.
Continue from GPT-5.2 vs GPT-5.4 Nano into nearby model comparisons with enough verified LMSpeed data.
| Model metadata | GPT-5.2 exposes 128K tokens; notable signals: Text input, Image input, File input, Text output. | GPT-5.4 Nano exposes 400K tokens; notable signals: Text input, Image input, File input, Text output. |
|---|---|---|
| Developer | OpenAI | OpenAI |
| Context window | 128K tokens | 400K tokens |
| Max output | 16.4K tokens | 128K tokens |
| Released | Dec 2025 | Mar 2026 |
| Modalities | Input FileImageText Output Text | Input FileImageText Output Text |
| Features | Text inputImage inputFile inputText outputTool callingStructured outputsJSON mode | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning |
| Parameters | No data | No data |
| Tokenizer | GPT | GPT |
| Knowledge cutoff | No data | 2025-08-31 |
| OpenRouter ID | openai/gpt-5.2-chat | openai/gpt-5.4-nano |
| References | No data | No data |
| HLE | 35.4%#9 | 26.5%#24 |
|---|
| SciCode | 52.1%#9 | 46.9%#16 |
|---|
| Input price | $1.75/M#35 | $0.200/M#11 |
|---|
| Output price | $14.00/M#43 | $1.25/M#19 |
|---|
| Blended price | $4.81/M#62 | $0.463/M#23 |
|---|
| Output speed | 72.8 tok/s#71 | 148.7 tok/s#31 |
|---|
| Time to first answer token | 115.69 s#109 | 2.46 s#44 |
|---|
speed / latency
N/A / N/A
input / output
No data
YUNWU API10 tests | GPT-5.2 speed / latency N/A / N/A input / output No data | GPT-5.4 Nano speed / latency 147 tok/s / 4365ms input / output No data |
|---|
Feng Love API5 tests | GPT-5.2 speed / latency 65 tok/s / 4770ms input / output No data | GPT-5.4 Nano speed / latency N/A / N/A input / output No data |
|---|
ocool AI5 tests | GPT-5.2 speed / latency N/A / N/A input / output No data | GPT-5.4 Nano speed / latency 118 tok/s / 1397ms input / output No data |
|---|
Rnglg2 API5 tests | GPT-5.2 speed / latency 55 tok/s / 1434ms input / output No data | GPT-5.4 Nano speed / latency N/A / N/A input / output No data |
|---|
GPT-5.2 openai/gpt-5.2 speed / latency No data input / output $6.00/M / $24.00/M | GPT-5.4 Nano openai/gpt-5.4-nano speed / latency No data input / output $0/M / $0/M |
GPT-5.2 gpt-5.2 speed / latency No data input / output $2.00/M / $16.00/M | GPT-5.4 Nano gpt-5.4-nano speed / latency No data input / output $0.0010/M / $0.0010/M |
GPT-5.2 gpt-5.2 speed / latency No data input / output $0.0027/M / $0.0027/M | GPT-5.4 Nano gpt-5.4-nano-2026-03-17 speed / latency No data input / output $0.027/M / $0.171/M |
Rankings are based on community-submitted tests and periodic health probes. Advisory only, not official data.
