Open-source AI infrastructure

Nemotron 3 Ultra 550B A55B on OpenRouter

Review Nemotron 3 Ultra 550B A55B (OpenRouter) on OpenRouter: token pricing, context window, capabilities, modalities, and routing details in the Everstack model ca…

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Nemotron 3 Ultra 550B A55B (OpenRouter) pricing and limits on OpenRouter

Token pricing through OpenRouter: $0.600 per million input tokens, $3.60 per million output tokens. Limits: 512K token context window, 461K max output tokens.

Capabilities and modalities

Supported capabilities: chat, function_calling, reasoning. Accepts text input. Returns text output. Model family: nemotron. Catalog status: stable.

Routing Nemotron 3 Ultra 550B A55B (OpenRouter) through Everstack

Call Nemotron 3 Ultra 550B A55B (OpenRouter) on OpenRouter through one OpenAI-compatible endpoint, with provider fallback, semantic caching, per-tenant rate limits, and OpenTelemetry traces for latency, tokens, and cost.