GPT-5 nano vs Nemotron Nano 9B v2
GPT-5 nano significantly outperforms across most benchmarks.
OpenAI · NVIDIA · Updated for 2026
Which is better?
GPT-5 nano outperforms in 2 benchmarks (AIME 2025, GPQA), while Nemotron Nano 9B v2 is better at 0 benchmarks. GPT-5 nano significantly outperforms across most benchmarks.
Based on current benchmark, pricing, and model metadata for 2026.
Choose GPT-5 nano
- you want the strongest raw capability — it leads on 2 of 2 shared benchmarks
Choose Nemotron Nano 9B v2
- you want the most recent training data — it shipped Aug 2025
- you need open weights you can self-host or fine-tune
At a glance
The differences that matter most.
Performance Benchmarks
Comparative analysis across standard metrics
GPT-5 nano outperforms in 2 benchmarks (AIME 2025, GPQA), while Nemotron Nano 9B v2 is better at 0 benchmarks.
GPT-5 nano significantly outperforms across most benchmarks.
Arena Performance
Playground indexes and blind preference scores
Context Window
Maximum input and output token capacity
Only GPT-5 nano specifies input context (400,000 tokens). Only GPT-5 nano specifies output context (128,000 tokens).
Input Capabilities
Supported data types and modalities
GPT-5 nano supports multimodal inputs, whereas Nemotron Nano 9B v2 does not.
GPT-5 nano can handle both text and other forms of data like images, making it suitable for multimodal applications.
GPT-5 nano
Nemotron Nano 9B v2
License
Usage and distribution terms
GPT-5 nano is licensed under a proprietary license, while Nemotron Nano 9B v2 uses NVIDIA Open Model License Agreement .
License differences may affect how you can use these models in commercial or open-source projects.
Proprietary
Closed source
NVIDIA Open Model License Agreement
Open weights
Release Timeline
When each model was launched
GPT-5 nano was released on 2025-08-07, while Nemotron Nano 9B v2 was released on 2025-08-18.
Nemotron Nano 9B v2 is 0 month newer than GPT-5 nano.
Aug 7, 2025
1.0 years ago
Aug 18, 2025
1.0 years ago
1w newerKnowledge Cutoff
When training data ends
GPT-5 nano has a knowledge cutoff of 2024-05-30, while Nemotron Nano 9B v2 has a cutoff of 2024-09-01.
Nemotron Nano 9B v2 has more recent training data (up to 2024-09-01), making it potentially better informed about events through that date compared to GPT-5 nano (2024-05-30).
May 2024
Sep 2024
4 mo newerOutputs Comparison
Judge for yourself.
Run your own prompts against GPT-5 nano and Nemotron Nano 9B v2 side-by-side, then vote on the output you prefer.
FAQ
Common questions about GPT-5 nano vs Nemotron Nano 9B v2.