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Llama-3.1-Nemotron-Ultra-253B-v1

Nebius Token FactoryOpen weights

Llama-3.1-Nemotron-Ultra-253B-v1 by Nebius Token Factory costs $0.60 per 1M input tokens and $1.80 per 1M output tokens, with a 128K-token context window.

Pricing

Input (per 1M tokens)
$0.60
Output (per 1M tokens)
$1.80
Cached input (per 1M)
$0.06

Specifications

Provider
Nebius Token Factory
Context window
128K tokens
Parameters
—
Released
Jan 2025
Open weights
Yes
Frontier model
No

Benchmarks

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FAQ

How much does Llama-3.1-Nemotron-Ultra-253B-v1 cost?

Llama-3.1-Nemotron-Ultra-253B-v1 is priced at $0.60 per 1M input tokens and $1.80 per 1M output tokens. Output tokens cost more than input.

What is Llama-3.1-Nemotron-Ultra-253B-v1's context window?

Llama-3.1-Nemotron-Ultra-253B-v1 supports a context window of 128K tokens — the maximum prompt plus response length it can handle in a single request.

Is Llama-3.1-Nemotron-Ultra-253B-v1 open weight?

Yes — Llama-3.1-Nemotron-Ultra-253B-v1 has openly available weights.

Data as of 2026-06-28. Source: models.dev (open). Pricing is per 1M tokens (USD); confirm with the provider before production use.