Compare AI models
| Specifications | ||
ParametersThe learned values that shape how a model responds. B means billion and T means trillion. For mixture-of-experts models, the total count is larger than the number active for each token. Parameter count alone does not measure quality. | 253B | 8B |
Context windowHow much information the model can work with in one request, measured in tokens — pieces of words or other data. This includes your question, attachments, conversation and reply. Limits can vary by model variant and provider. | 128k | — |
| These models have no shared benchmark scores. | ||
LiveCodeBenchCompetitive coding — Coding problems published so recently the AI can't have seen them in training — a contamination-free test of raw programming skill. Higher is better. | 66.3% | — |
GPQA DiamondScience — Graduate-level science questions in biology, physics, and chemistry — hard enough that subject-matter PhDs score around 65%. Higher is better. | 76% | — |
| Overview | ||
| Company | NVIDIA | NVIDIA |
| Release date | Apr 7 2025 | Oct 23 2026 |
| Access | Open Weight | Open Weight |
| Model details | View model | View model |
Other comparisons
Llama Nemotron Ultra 253BvsClaude Haiku 5.5Nemotron 3.5 Bolt E4B 4GBvsClaude Haiku 5.5Llama Nemotron Ultra 253BvsGPT-6.1 SolNemotron 3.5 Bolt E4B 4GBvsGPT-6.1 SolLlama Nemotron Ultra 253BvsGemini 4 ArgonNemotron 3.5 Bolt E4B 4GBvsGemini 4 ArgonLlama Nemotron Ultra 253BvsMuse Spark OpenNemotron 3.5 Bolt E4B 4GBvsMuse Spark OpenLlama Nemotron Ultra 253BvsGrok 4.7Nemotron 3.5 Bolt E4B 4GBvsGrok 4.7Llama Nemotron Ultra 253BvsDeepSeek-V4.1-Flash-1017Nemotron 3.5 Bolt E4B 4GBvsDeepSeek-V4.1-Flash-1017Frequently asked questions
Llama Nemotron Ultra 253B and Nemotron 3.5 Bolt E4B 4GB don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Llama Nemotron Ultra 253B shipped 564 days before Nemotron 3.5 Bolt E4B 4GB, so benchmark comparisons should account for the intervening progress.
Llama Nemotron Ultra 253B has 253B parameters, while Nemotron 3.5 Bolt E4B 4GB has 8B.
Direct benchmark comparisons are unavailable — Llama Nemotron Ultra 253B and Nemotron 3.5 Bolt E4B 4GB don't publish scores on any of the same benchmarks.