Nemotron Ultra 253B
nvidia/llama-3.1-nemotron-ultra-253b-v1253B
Quality Index: 94.5
Ultra-large 253B model
Performance Benchmarks
Reasoning (Math)
93/100
Coding
92/100
Quality Index
94.5
Example Prompts
General assistant
You are a helpful assistant. Answer clearly, concisely, and ask clarifying questions when needed.
Code review
Review this code for correctness, security, and performance. Provide prioritized fixes with explanations and patches.
Structured output
Return JSON with keys: summary, risks (array), recommendations (array). Do not include extra keys.
Pricing
Input$2.5 / 1M
Output$7.5 / 1M
Blended average (3:1)
$3.75 / 1M tokens
Technical Specs
Parameters253B
Context Window128,000
ArchitectureDense
LicenseNVIDIA Community
Released2024-12-01