NVIDIA Nemotron 3 Ultra 550B A55B
- Next shutdown
- None setNo date on 2 platforms
- Context window
- 1Mtokens
- Released
- Jun 4, 2026NVIDIA
Dates on every platform
2 listings · a floor is the earliest possible date
| Platform | Model ID and status | Deprecated | Shuts down | Replacement |
|---|---|---|---|---|
| Together AITogether AI: Deprecations (opens in a new tab) · checked Oct 14, 2026 | nvidia/Nemotron-3-ultra-550b-a55bShut down | – | Shut down | – |
| Fireworks AIFireworks AI: NVIDIA Nemotron 3 Ultra NVFP4 model page (opens in a new tab) · checked Oct 14, 2026 | accounts/fireworks/models/nemotron-3-ultra-nvfp4Preview | – | None set | – |
Fireworks lists this model as a preview on serverless.
What breaks when you move off NVIDIA Nemotron 3 Ultra 550B A55B
List prices
$ per 1M tokens, with each price’s source
| Platform | Input | Cached | Output | In effect | Source |
|---|---|---|---|---|---|
Fireworks AIaccounts/fireworks/models/nemotron-3-ultra-nvfp4 | $0.60 | $0.12 | $2.40 | Oct 14, 2026Current · Standard serverless mode. Batch inference is billed at half the Standard rate; Priority, Fast and US-only endpoints cost more. | Fireworks AI: Serverless Pricing (opens in a new tab) |
Change history
ShutdownDeepSeek V4 Pro preview, Kimi K2.7 Code and Nemotron 3 Ultra leave Together serverlessTogether AI1 break
Together removed deepseek-ai/DeepSeek-V4-Pro (use DeepSeek-V4-Pro-0813 instead), moonshotai/Kimi-K2.7-Code and nvidia/Nemotron-3-ultra-550b-a55b from serverless.
- Platform
- Together AI
- AvailabilityRequests to the removed serverless model IDs fail. DeepSeek V4 Pro and Kimi K2.7 Code stay available on on-demand dedicated endpoints; Nemotron 3 Ultra does not.
Source: Together AI, Changelog (opens in a new tab); Together AI, Deprecations (opens in a new tab)