Model comparison
GPT-5 mini 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.
Sibling matchup inside the GPT-5 family.
Public leaderboard positions: GPT-5 mini #153 (Supported); GPT-5 nano #139 (Estimated). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. GPT-5 mini and GPT-5 nano share 0 comparable benchmark results. 0 of 8 categories are comparable. 1 result is unique to GPT-5 mini; 0 to GPT-5 nano.
Updated July 23, 2026- Shared results
- 0
- GPT-5 mini only
- 1
- GPT-5 nano only
- 0
- Comparable categories
- 0 / 8
Benchmark data for GPT-5 mini 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 nano yet. This comparison is currently limited to metadata such as context window, reasoning mode, and pricing where available.
GPT-5 mini is priced at $0.25 input / $2.00 output per 1M tokens, versus $0.05 input / $0.40 output per 1M tokens for GPT-5 nano. GPT-5 nano has the larger context window at 400K, compared with 128K for GPT-5 mini.
Operator verdict
What I would choose
GPT-5 nano is the cheaper, faster-throughput option in the available metadata. GPT-5 mini reached the first token sooner in the recorded runtime row. There is no shared sourced benchmark result, so this page does not name a quality winner.
Operator receipt. I checked the price, speed, latency, and context rows on July 15, 2026. GPT-5 nano is $0.05 input / $0.4 output with a 400K window; GPT-5 mini is $0.25 input / $2 output with a 128K window.
Honest limit. This is a metadata comparison, not a benchmark verdict. Pricing, speed, latency, and context can still inform an operational choice, but this page should not be read as a quality ranking.
Reviewed by Glevd on July 15, 2026.
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | GPT-5 mini | GPT-5 nano | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | GPT-5 mini$0.25 input / $2 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 mini86 tok/s | GPT-5 nano137 tok/s | GPT-5 nano has the higher measured throughput. |
| First-answer latencyseconds to first token | GPT-5 mini65.32 s | GPT-5 nano83.30 s | GPT-5 mini reaches the first token sooner. |
| Context windowmaximum listed tokens | GPT-5 mini128K | GPT-5 nano400K | GPT-5 nano lists the larger context window. |
Benchmark Deep Dive
Coding1 benchmarks
| Benchmark | GPT-5 mini | GPT-5 nano | Result |
|---|---|---|---|
| Vibe Code BenchSource | 14.17% | — | Not comparable |
Frequently Asked Questions (3)
Can I compare GPT-5 mini 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 mini and GPT-5 nano today?
GPT-5 mini: $0.25 input / $2.00 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
Choose a model with this week’s evidence
Join 2,000+ readers for ranking moves, pricing changes, and the claims that still need proof.
One email each week. Unsubscribe anytime.