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Side-by-side comparison of API pricing, context window, latency, and benchmark performance. Data refreshed daily from provider APIs and ModelStop's own latency probes.
💰NVIDIA: Llama 3.1 Nemotron Ultra 253B v1 is 80% cheaper than xAI: Grok 4
Price (lower is better), Speed/Latency (lower is better), Performance (higher is better)
NVIDIA: Llama 3.1 Nemotron Ultra 253B v1 is 400% cheaper
| Spec | NVIDIA: Llama 3.1 Nemotron Ultra 253B v1 | xAI: Grok 4 |
|---|---|---|
| Provider | nvidia | x-ai |
| Input price / 1M tokens | $0.60 | $3.00 |
| Output price / 1M tokens | $1.80 | $15.00 |
| Context window | 131k tokens | 256k tokens |
| Latency (p50) | — | — |
| Best benchmark score | — | — |
| Open source | No | No |
Llama-3.1-Nemotron-Ultra-253B-v1 is a large language model (LLM) optimized for advanced reasoning, human-interactive chat, retrieval-augmented generation (RAG), and tool-calling tasks. Derived from Meta’s Llama-3.1-405B-Instruct, it has been significantly customized using Neural...
Grok 4 is xAI's latest reasoning model with a 256k context window. It supports parallel tool calling, structured outputs, and both image and text inputs. Note that reasoning is not...
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