Nemotron 3 Ultra 550B A55B
Largest Nemotron 3 model for maximum open-weight reasoning and agent accuracy
Context
1,048,576
Max output
1,048,576
Input / 1M
$0.50
Output / 1M
$2.15
Providers
15
01Profile
Profile
Released
2026-06-04
Last updated
2026-06-11
Knowledge cutoff
—
Weights
Open
02Capabilities
Capabilities
Input
text
Output
text
Reasoning
Yes
Tool calling
Yes
Structured output
Yes
Attachments
No
Cache read
$0.15
Cache write
Not listed
03Pricing
Pricing across 13 providers
Per 1M tokens, USD. Sorted by input price. First-party row highlighted.
04History
Change history
12+ recent events since 2026-06-04
2026-09-16ContextkiloContext window202,800→ 256,000
2026-09-16ContextkiloMax output182,520→ 32,768
2026-09-16Price upopenrouterinput / 1M$0.60→ $0.63
2026-09-16Price upopenrouteroutput / 1M$2.40→ $3.13
2026-09-16ContextopenrouterMax output182,520→ 32,768
2026-09-14ContextkiloContext window256,000→ 202,800
2026-09-14ContextkiloMax output32,768→ 182,520
2026-09-14Price cutopenrouterinput / 1M$0.63→ $0.60
2026-09-14Price cutopenrouteroutput / 1M$3.13→ $2.40
2026-09-14ContextopenrouterMax output32,768→ 182,520
2026-09-14Price cutwandbinput / 1M$0.75→ $0.50
2026-09-14Price cutwandboutput / 1M$2.75→ $2.15