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Llama 3.1 Nemotron Ultra 253B
nvidia·nvidia/llama-3.1-nemotron-ultra-253b·GA·Open weights·nemotron series
Flagship Nemotron model for high-throughput reasoning and complex agents
At a glance
Official price$0 / $0 per 1M
Cache read — · Nvidia
Lowest paid$0.60 / $1.80
DevPass (LLM Gateway) Gateway
1 more $0 channels
Context128,000
Output limit16,384
Capabilities
✓ Reasoning✓ Tool use✓ Structured output✓ TemperatureAttachments
⚠ Providers report capability flags inconsistently
Modalities
Text
Knowledge cutoff—
Released / updated2025-04-07 / 2025-04-07
Quality & performance
Artificial Analysis doesn't cover this model (267 of 2059 have data). Quality data comes from independent evals covering widely used models.
Available at 2 providers1 with public prices · 1 free
| Provider | Tier | Input | Output | Cache read | Cache write | Context | Output limit | Status |
|---|---|---|---|---|---|---|---|---|
| NvidiaOfficial nvidia/llama-3.1-nemotron-ultra-253b-v1 | First-party | Free | — | — | 128,000 | 16,384 | ||
| DevPass (LLM Gateway) | Gateway | $0.60 | $1.80 | — | — | 128,000 | 8,192 |
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.
Your usage cost
1DevPass (LLM Gateway)$210.00
1 more channels offer $0 (Nvidia); free tiers usually have rate limits and no SLA, excluded from ranking.
The cheapest paid channel is the only channel.
Benchmark
No upstream benchmark data for this model. For quality, see the Artificial Analysis intelligence score above.
Reasoning control
Toggle (on / off)
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Price historyone sample accumulated per data sync
Input listOutput listMin blended