# nvidia/nvidia-nemotron-3-ultra-550b-a55b-bf16

Calls to the model nvidia/nvidia-nemotron-3-ultra-550b-a55b-bf16 on DeepInfra stopped working on June 26, 2026.

DeepInfra retired the model nvidia/nvidia-nemotron-3-ultra-550b-a55b-bf16 on June 26, 2026. Calls specifying this model fail since that day.

## What to use instead

DeepInfra recommends moving to nvidia/NVIDIA-Nemotron-3-Ultra-550B-A55B.

- API: DeepInfra (api.deepinfra.com)
- Model: nvidia/nvidia-nemotron-3-ultra-550b-a55b-bf16
- Released: June 4, 2026 (models.dev)
- Kind: Model retirement
- Takes effect: June 26, 2026
- Calls after that day: fail
- Calls it hits: `model nvidia/nvidia-nemotron-3-ultra-550b-a55b-bf16`
- Source: [Model list](https://api.deepinfra.com/models/list)
- Verified: November 6, 2026, against DeepInfra's own pages
- Page: https://www.okapi.bot/models/deepinfra/nvidia/nvidia-nemotron-3-ultra-550b-a55b-bf16/

Okapi finds the calls this change hits in your repo and opens the pull request with the fix: https://github.com/apps/okapi-agent