Llama 3.1 Nemotron Ultra 253B
Flagship Nemotron model for high-throughput reasoning and complex agents
Model facts
- Context window
- 128K tokens
- Maximum output
- 16K tokens
- Cheapest paid input
- free per 1M tokens
- Cheapest paid output
- free per 1M tokens
- Open weights
- yes
- Providers
- 1
Capabilities and modalities
reasoning, tool calling, temperature control, open weights, text.
Observed price history
- 2026-08-24: $0.6 input / $1.8 output per 1M tokens
- 2026-09-01: free input / free output per 1M tokens
API providers
- Nvidia — model id nvidia/llama-3.1-nemotron-ultra-253b-v1; free input / free output per 1M tokens; provider documentation