token.app › Compare › o3 Mini vs GPT-5.4 Nano
o3 Mini vs GPT-5.4 Nano
GPT-5.4 Nano leads on 4 of 4 shared benchmarks. GPT-5.4 Nano is 4.2× cheaper per token on a blended 3:1 basis. GPT-5.4 Nano accepts the larger context window (400K).
Head to head
Blended price uses a 3:1 input:output mix
| o3 Mini | GPT-5.4 Nano | |
|---|---|---|
| Provider | OpenAI | OpenAI |
| Input $/1M | $1.10 | $0.200 |
| Output $/1M | $4.40 | $1.25 |
| Blended $/1M | $1.93 | $0.463 |
| Context window | 200K | 400K |
| Max output | 100K | 128K |
| Released | Jan 2025 | Mar 2026 |
| Licence | Proprietary | Proprietary |
| GPQA Diamond | 77.0% | 78.5% |
| FrontierMath T1–3 | 18.6% | 44.9% |
| FrontierMath T4 | 0.0% | 12.2% |
| OTIS Mock AIME | 76.9% | 87.8% |
Benchmark scores independently run and published by Epoch AI, 'AI Benchmarking Hub', used under CC BY 4.0. Only benchmarks with a score for BOTH models are compared.
Choose o3 Mini if…
- No clear advantage on the data we hold.
Choose GPT-5.4 Nano if…
- Costs less per token — $0.463 vs $1.93 blended
- Higher GPQA Diamond (78.5% vs 77.0%)
- Higher FrontierMath T1–3 (44.9% vs 18.6%)
- Higher FrontierMath T4 (12.2% vs 0.0%)
- Higher OTIS Mock AIME (87.8% vs 76.9%)
- Larger context window (400K)
- Newer model (released Mar 2026)
FAQ
Which is better, o3 Mini or GPT-5.4 Nano?
Across the 4 benchmarks both models have independently-run scores for, o3 Mini leads on 0 and GPT-5.4 Nano leads on 4. Benchmarks are one input — price and context window are on this page too.
Is o3 Mini cheaper than GPT-5.4 Nano?
GPT-5.4 Nano is cheaper: $0.463 versus $1.93 per million tokens blended at 3:1 input:output. Input alone: $1.10 vs $0.200. Output alone: $4.40 vs $1.25.
What context windows do o3 Mini and GPT-5.4 Nano have?
o3 Mini: 200,000 tokens. GPT-5.4 Nano: 400,000 tokens.
Who makes o3 Mini and GPT-5.4 Nano?
o3 Mini is made by OpenAI. GPT-5.4 Nano is made by OpenAI.