--- title: "nemotron-3-ultra-550b-a55b - Model Details & Comparison" description: "nemotron-3-ultra-550b-a55b from OpenRouter: capabilities, context limits, pricing, and side-by-side comparisons with alternative models." url: "https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/openrouter/nemotron-3-ultra-550b-a55b" markdown: "https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/openrouter/nemotron-3-ultra-550b-a55b.md" --- # nemotron-3-ultra-550b-a55b - Model Details & Comparison > nemotron-3-ultra-550b-a55b from OpenRouter: capabilities, context limits, pricing, and side-by-side comparisons with alternative models. ## Important Links - [View MCP Gateway](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/resources/mcp-gateway.md) - [Features](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/#features) - [Enterprise](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/enterprise) - [Pricing](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/pricing.md) - [Docs](https://docs.getbifrost.ai) - [GitHub](https://github.com/maximhq/bifrost) - [Book a Demo](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/book-a-demo) ## About nemotron-3-ultra-550b-a55b nemotron-3-ultra-550b-a55b is a chat model from OpenRouter, one of 357 chat models they offer. It is priced at $0.60 per 1M input tokens and $3.60 per 1M output tokens, ranking 1451 out of 2669 chat models by cost and cheaper than 45% of models in this category. nemotron-3-ultra-550b-a55b supports function calling, reasoning, prompt caching, structured output. Its 512K-token context window is in the top 16% among chat models. ## Specifications - **OpenRouter Provider.** - **Chat Mode.** - **512,288 Max Input Tokens.** - **512,288 Max Tokens.** - **$0.60 / 1M tokens Input Price.** - **$3.60 / 1M tokens Output Price.** ## Capabilities nemotron-3-ultra-550b-a55b supports: Function Calling, Reasoning, Prompt Caching, Response Schema, Tool Choice. ## nemotron-3-ultra-550b-a55b Pricing Overview At $0.60 per 1M input tokens and $3.60 per 1M output tokens, nemotron-3-ultra-550b-a55b ranks 1451 out of 2669 chat models by input cost. It is more expensive compared to the median of $0.50 for chat models, and is cheaper than 45% of models in this category. nemotron-3-ultra-550b-a55b is one of 357 OpenRouter chat models, with support for function calling, reasoning, prompt caching, structured output. its 512K-token context window places it in the top 16% of chat models. ## Models to Compare Alternatives to nemotron-3-ultra-550b-a55b with comparable capabilities. | Model | Provider | Input $/1M | Output $/1M | | --- | --- | --- | --- | | gpt-5.4-mini | Azure | $0.75 | $4.50 | | gpt-5.4-mini-2026-03-17 | Azure | $0.75 | $4.50 | | gemini-3-flash-preview | Vertex AI | $0.50 | $3.00 | | gemini-3-flash-preview | Google Gemini | $0.50 | $3.00 | | gpt-5.4-mini | OpenAI | $0.75 | $4.50 | - [Compare gpt-5.4-mini](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/azure/gpt-5.4-mini.md) - [Compare gpt-5.4-mini-2026-03-17](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/azure/gpt-5.4-mini-2026-03-17.md) - [Compare gemini-3-flash-preview](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/vertex_ai/gemini-3-flash-preview.md) - [Compare gemini-3-flash-preview](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/gemini/gemini-3-flash-preview.md) - [Compare gpt-5.4-mini](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/openai/gpt-5.4-mini.md) ## Related Resources - [Calculate nemotron-3-ultra-550b-a55b costs](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/llm-cost-calculator/provider/openrouter/model/nemotron-3-ultra-550b-a55b.md) - [Check OpenRouter status](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/provider-status/openrouter.md) - [All OpenRouter pricing](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/llm-cost-calculator/provider/openrouter.md) ## FAQ ### Is nemotron-3-ultra-550b-a55b cheaper than gpt-5.4-mini? Yes. nemotron-3-ultra-550b-a55b costs $0.60 per 1M input tokens compared to gpt-5.4-mini's $0.75 per 1M input tokens, making it 25% more affordable. Both are chat models and share support for vision, function calling, reasoning, web search, prompt caching, structured output. ### How does nemotron-3-ultra-550b-a55b pricing compare to the average chat model? nemotron-3-ultra-550b-a55b input pricing is $0.60 per 1M tokens, which is 20% above the median of $0.50 for chat models. It ranks 1451 out of 2669 chat models by input cost, making it cheaper than 45% of models in this category. For output, it costs $3.60 per 1M tokens compared to the median of $1.44. ### What makes nemotron-3-ultra-550b-a55b different from other OpenRouter models? Among OpenRouter's 357 chat models, nemotron-3-ultra-550b-a55b ranks 186 by input cost. ### What are the best alternatives to nemotron-3-ultra-550b-a55b? The most comparable chat models to nemotron-3-ultra-550b-a55b are: gpt-5.4-mini from Azure ($0.75/1M input tokens); gpt-5.4-mini-2026-03-17 from Azure ($0.75/1M input tokens); gemini-3-flash-preview from Vertex AI ($0.50/1M input tokens); gemini-3-flash-preview from Google Gemini ($0.50/1M input tokens). These alternatives were selected based on similar capabilities, pricing, and provider diversity. You can compare any of these models in detail using the Bifrost Model Library. ### How large is nemotron-3-ultra-550b-a55b's context window? nemotron-3-ultra-550b-a55b supports up to 512,288 input tokens, placing it in the top 16% of chat models by context window size (rank 411 of 2653). This makes it suitable for processing long documents, extensive code repositories, or maintaining detailed conversation histories. ### How do I check if OpenRouter is down? You can monitor OpenRouter service health in real time on the Bifrost OpenRouter Status page. It tracks current component status, active incidents, and historical reliability data pulled from the official status page every 60 seconds. ### How do I calculate nemotron-3-ultra-550b-a55b costs? nemotron-3-ultra-550b-a55b is priced based on input and output tokens. Use the interactive calculator at the top of this page to estimate costs for your specific workload. Enter your expected input and output tokens volume and the calculator will show the total cost breakdown. For reference, processing 1M input tokens costs $0.60 and generating 1M output tokens costs $3.60. ## Related Resources - [OpenRouter models](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/provider/openrouter.md) - [Model library](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library.md) - [LLM cost calculator](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/llm-cost-calculator.md) - [Docs: Bifrost docs](https://docs.getbifrost.ai) - [GitHub: maximhq/bifrost](https://github.com/maximhq/bifrost) - [Pricing: Bifrost pricing](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/pricing.md) - [Enterprise: Bifrost enterprise](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/enterprise) - [Book a Demo: Bifrost demo](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/book-a-demo) - [Resources: Bifrost resources](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/resources.md) --- *This is a markdown version of [https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/openrouter/nemotron-3-ultra-550b-a55b](https://maxim-root-proxy-preview.getmaxim.workers.dev/bifrost/model-library/compare/openrouter/nemotron-3-ultra-550b-a55b) for AI/LLM consumption.*