Llama 3.1 Nemotron Ultra 253B v1: API Pricing, Context Window & Benchmarks
Llama 3.1 Nemotron Ultra 253B v1 is a language model from Nvidia, released in April 2025.
A 253B parameter derivative of Meta Llama 3.1 405B Instruct, developed by NVIDIA using Neural Architecture Search (NAS) and vertical compression. It underwent multi-phase post-training (SFT for Math, Code, Reasoning, Chat, Tool Calling; RL
Llama 3.1 Nemotron Ultra 253B v1 benchmarks
Rankings
Quality Tracker
Llama 3.1 Nemotron Ultra 253B v1 Performance Across Datasets
Scores sourced from the model's scorecard, paper, or official blog posts
llm-stats.com - Mon Jul 27 2026Llama 3.1 Nemotron Ultra 253B v1 model size
Llama 3.1 Nemotron Ultra 253B v1 has 253 billion parameters. See how it compares to other models in the same parameter range.
Llama 3.1 Nemotron Ultra 253B v1 API
API availability not verified
API availability for Llama 3.1 Nemotron Ultra 253B v1 has not been verified. It is not currently routed through the LLM Stats gateway.
Llama 3.1 Nemotron Ultra 253B v1 latency
Llama 3.1 Nemotron Ultra 253B v1 time to first token, sustained output throughput, and failed-request rate from live API traffic over the trailing 7 days.
Llama 3.1 Nemotron Ultra 253B v1 examples
Recent arena outputs from Llama 3.1 Nemotron Ultra 253B v1, picked from the highest-ranked matchups.
Llama 3.1 Nemotron Ultra 253B v1 license
Llama 3.1 Nemotron Ultra 253B v1 is released under the Llama 3.1 Community License license, which restricts commercial use, has 253.0B parameters, has a knowledge cutoff of December 2023.
- License
- Llama 3.1 Community License
- Non-commercial
- Parameters
- 253.0B
- Knowledge cutoff
- December 2023
Llama 3.1 Nemotron Ultra 253B v1 resources
Official sources for Llama 3.1 Nemotron Ultra 253B v1: official playground, paper or system card, official launch post, model weights.
Llama 3.1 Nemotron Ultra 253B v1 vs other models
The most-compared alternatives to Llama 3.1 Nemotron Ultra 253B v1 are Kimi K2 0905, Nemotron Nano 9B v2, LongCat-Flash-Chat. Open any pair side-by-side for benchmarks, pricing, context, and latency.
- Llama 3.1 Nemotron Ultra 253B v1vsKimi K2 0905
- Llama 3.1 Nemotron Ultra 253B v1vsNemotron Nano 9B v2
- Llama 3.1 Nemotron Ultra 253B v1vsLongCat-Flash-Chat
- Llama 3.1 Nemotron Ultra 253B v1vsNova Lite
- Llama 3.1 Nemotron Ultra 253B v1vsClaude Sonnet 4
- Llama 3.1 Nemotron Ultra 253B v1vsGemini 2.5 Pro Preview 06-05
Models like Llama 3.1 Nemotron Ultra 253B v1
Models ranked just above and below Llama 3.1 Nemotron Ultra 253B v1 by LLM Stats score.
FAQ
Common questions about Llama 3.1 Nemotron Ultra 253B v1.