Flagship Nemotron model for high-throughput reasoning and complex agents
Llama 3.1 Nemotron Ultra 253B by nvidia is currently listed from a single provider. Its official list price is $0 per 1M tokens. It also has 1 free ($0) channel; free tiers usually carry rate limits, and subscription-covered access bills $0 per token only after the subscription fee.
Artificial Analysis rates it 7.5 on the Intelligence Index.
The context window is 128,000 tokens, with an output limit of 16,384 tokens. It supports reasoning and tool use. The weights are open, so it can also be self-hosted or served through a gateway of your choice.
Quality is independently evaluated by Artificial Analysis. Speed/latency are model-level medians.
| Provider | Tier | Input | Output | Cache read | Cache write | Context | Output limit | Status |
|---|---|---|---|---|---|---|---|---|
| NvidiaOfficial nvidia/llama-3.1-nemotron-ultra-253b-v1 | Cloud | Free | — | — | 128,000 | 16,384 |
Sorted by blended price (input×0.75 + output×0.25) asc. The official channel always shows regardless of rank. Whether a gateway's low price is actually usable can't be verified.
This model is $0 across all listed channels (Nvidia).
Individual evaluations run by Artificial Analysis, on the same reasoning tier as the intelligence score above. Each benchmark has its own task set and harness, so rows are not comparable with one another. The Intelligence Index above draws on a different, newer set of evaluations.