NVIDIA Nemotron 3 Ultra (550B, A55B) via OpenRouter's free tier.
Vichar routes requests to the best providers that are able to handle your prompt size and parameters.
NVIDIA Nemotron 3 Ultra (550B, A55B) via OpenRouter's free tier. You can access it through LLM Gateway's OpenAI-compatible API with automatic provider routing, fallback, and cost analytics.
Pricing for Nemotron 3 Ultra 550B on LLM Gateway starts at $0.15 per million input tokens and $0.60 per million output tokens, depending on the provider. The pricing table above always reflects the current per-provider rates.
Nemotron 3 Ultra 550B supports a context window of up to 1,000,000 tokens on its largest provider deployment.
Nemotron 3 Ultra 550B is served by OpenRouter through LLM Gateway. Requests are automatically routed to the best available provider, with fallback when a provider has issues.
No. Nemotron 3 Ultra 550B does not currently support tool calling or structured JSON outputs through LLM Gateway.
Nemotron 3 Ultra 550B was released on September 26, 2026.
Dots 3 Note Preview
512,000 context$0.15 in / $0.60 out per 1M
LFM 2.5 2.6B
65,536 context$0.15 in / $0.60 out per 1M
North Mini Code
256,000 context$0.15 in / $0.60 out per 1M
Laguna S 2.1
262,144 context$0.15 in / $0.60 out per 1M
Nemotron 3.5 Lightning
1,000,000 context$0.15 in / $0.60 out per 1M
Nemotron 3 Super 120B
262,144 context$0.15 in / $0.60 out per 1M