Model comparison
GPT-5.2 Pro vs GPT-5 nano
Head-to-head evidence from 0 shared benchmark results across 0 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.
Public leaderboard positions: GPT-5.2 Pro #26 (Supported); GPT-5 nano #146 (Estimated). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. GPT-5.2 Pro and GPT-5 nano share 0 comparable benchmark results. 0 of 8 categories are comparable. 0 results are unique to GPT-5.2 Pro; 0 to GPT-5 nano.
Updated July 28, 2026- Shared results
- 0
- GPT-5.2 Pro only
- 0
- GPT-5 nano only
- 0
- Comparable categories
- 0 / 8
Benchmark data for GPT-5.2 Pro and GPT-5 nano is coming soon on BenchLM.
Confidence note. This is a partial-evidence comparison with 0 shared benchmark results across 0 evidence categories; 0 of 8 categories currently have scoreable aggregates for both models. Treat the verdict as directional until coverage is more balanced.
Why this result
BenchLM does not have sourced benchmark coverage for GPT-5.2 Pro and GPT-5 nano yet. This comparison is currently limited to metadata such as context window, reasoning mode, and pricing where available.
GPT-5.2 Pro is priced at $25.00 input / $150.00 output per 1M tokens, versus $0.05 input / $0.40 output per 1M tokens for GPT-5 nano.
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | GPT-5.2 Pro | GPT-5 nano | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | GPT-5.2 Pro$25 input / $150 output | GPT-5 nano$0.05 input / $0.4 output | GPT-5 nano has the lower combined listed price. |
| Generation speedtokens per second | GPT-5.2 ProNot available | GPT-5 nano137 tok/s | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | GPT-5.2 ProNot available | GPT-5 nano83.30 s | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | GPT-5.2 Pro400K | GPT-5 nano400K | Listed context windows are equal. |
Benchmark Deep Dive
Frequently Asked Questions (3)
Can I compare GPT-5.2 Pro and GPT-5 nano on BenchLM yet?
Not fully yet. BenchLM is tracking both models, but the sourced benchmark breakdown for this comparison is still coming soon.
Why does this comparison show “coming soon”?
BenchLM only shows category winners and benchmark-level calls when we have sourced results that can be compared fairly. For these models, the public benchmark coverage is not complete enough yet.
What data is available for GPT-5.2 Pro and GPT-5 nano today?
GPT-5.2 Pro: $25.00 input / $150.00 output per 1M tokens GPT-5 nano: $0.05 input / $0.40 output per 1M tokens Both model pages still include creator, context window, reasoning mode, and other metadata while benchmark coverage fills in.
Related Comparisons
Explore More
Know when it’s worth switching models
The model to choose, the cheaper alternative, and the release we would wait on.
One email each week. Unsubscribe anytime.