GPT-5.2 Pro vs Nemotron 3 Ultra (550B A55B)
GPT-5.2 Pro leads the LLM Stats Score 43.0 to 36.3. Nemotron 3 Ultra (550B A55B) is 62.4x cheaper per token.
OpenAI · NVIDIA · Updated for 2026
Which is better?
GPT-5.2 Pro leads the overall LLM Stats Score 43.0 to 36.3, ranking #45 overall.
In the 3 individual benchmarks reported for both models, GPT-5.2 Pro wins 2; this is a narrower head-to-head signal than the composite indexes.
On price, Nemotron 3 Ultra (550B A55B) is roughly 62.4x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
GPT-5.2 Pro also accepts a larger context window (400,000 input tokens), making it the stronger choice for long documents and large codebases.
Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.
Choose GPT-5.2 Pro
- overall performance matters — it scores 43.0 and ranks #45 on LLM Stats
- your work emphasizes reasoning — it leads those capability indexes
- you value its reported benchmark strengths — it wins 2 of 3 exact shared results
- you process long inputs — it offers a 400,000 token context window
Choose Nemotron 3 Ultra (550B A55B)
- cost matters — it's about 62.4x cheaper per token
- you want the most recent training data — it shipped Jun 2026
- you need open weights you can self-host or fine-tune
At a glance
The differences that matter most.
Capability indexes
Additional strengths measured across groups of related public benchmarks
Individual benchmarks
7 reported for GPT-5.2 Pro · 26 for Nemotron 3 Ultra (550B A55B)
GPT-5.2 Pro outperforms in 2 benchmarks (BrowseComp, GPQA), while Nemotron 3 Ultra (550B A55B) is better at 1 benchmark (Humanity's Last Exam).
GPT-5.2 Pro shows notably better performance in the majority of benchmarks.
Human preference
Blind head-to-head votes and playground preference scores
Pricing Analysis
Price comparison per million tokens
For input processing, GPT-5.2 Pro ($21.00/1M tokens) is 42.0x more expensive than Nemotron 3 Ultra (550B A55B) ($0.50/1M tokens).
For output processing, GPT-5.2 Pro ($168.00/1M tokens) is 76.4x more expensive than Nemotron 3 Ultra (550B A55B) ($2.20/1M tokens).
In conclusion, GPT-5.2 Pro is more expensive than Nemotron 3 Ultra (550B A55B).*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
GPT-5.2 Pro accepts 400,000 input tokens compared to Nemotron 3 Ultra (550B A55B)'s 262,144 tokens. Nemotron 3 Ultra (550B A55B) can generate longer responses up to 262,144 tokens, while GPT-5.2 Pro is limited to 128,000 tokens.
Input capabilities
Documented input modalities across available providers
GPT-5.2 Pro supports multimodal inputs, whereas Nemotron 3 Ultra (550B A55B) does not.
GPT-5.2 Pro can handle both text and other forms of data like images, making it suitable for multimodal applications.
GPT-5.2 Pro
Nemotron 3 Ultra (550B A55B)
License
Usage and distribution terms
GPT-5.2 Pro is licensed under a proprietary license, while Nemotron 3 Ultra (550B A55B) uses OpenMDW License v1.1.
License differences may affect how you can use these models in commercial or open-source projects.
Proprietary
Closed source
OpenMDW License v1.1
Open weights
Release Timeline
When each model was launched
GPT-5.2 Pro was released on 2025-12-11, while Nemotron 3 Ultra (550B A55B) was released on 2026-06-04.
Nemotron 3 Ultra (550B A55B) is 6 months newer than GPT-5.2 Pro.
Dec 11, 2025
9 months ago
Jun 4, 2026
3 months ago
5mo newerKnowledge Cutoff
When training data ends
Nemotron 3 Ultra (550B A55B) has a documented knowledge cutoff of 2025-09-30, while GPT-5.2 Pro's cutoff date is not specified.
We can confirm Nemotron 3 Ultra (550B A55B)'s training data extends to 2025-09-30, but cannot make a direct comparison without GPT-5.2 Pro's cutoff date.
—
Sep 2025
Provider Availability
GPT-5.2 Pro is available from OpenAI. Nemotron 3 Ultra (550B A55B) is available from DeepInfra.
GPT-5.2 Pro
Nemotron 3 Ultra (550B A55B)
Outputs Comparison
Judge for yourself.
Run your own prompts against GPT-5.2 Pro and Nemotron 3 Ultra (550B A55B) side-by-side, then vote on the output you prefer.
FAQ
Common questions about GPT-5.2 Pro vs Nemotron 3 Ultra (550B A55B).