claude-opus-5.5 vs nemotron-3-ultra-550b-a55b
Both run on onomeo with free credits. Everything below comes from calls made through this site.
- claude-opus-5.5
- 1 advantage
- nemotron-3-ultra-550b-a55b
- 5 advantages
How to choose
claude-opus-5.5Reads images
nemotron-3-ultra-550b-a55bCheaper: about 13 a reply, 100% lessSteadier: 100% up over 3 daysSteadier this week: 100% of tests passedHigher in this week's ranking: #38Open weights
claude-opus-5.5
By Anthropic
nemotron-3-ultra-550b-a55b
By NVIDIA
Where they differ
claude-opus-5.5nemotron-3-ultra-550b-a55b
On this site
57%7 callsAvailability, last 3 days100%5 calls
66%9 testsAvailability, this week's tests100%10 tests
1.4sAverage response this week1.1s
6,732Credits per reply13
~29Replies a day's check-in buys~288
#47Place in this week's ranking#38
15×Credit multiplier1×
The model itself
YesReads imagesNo
Jun 2026Knowledge cutoffNot published
22 Sep 2026Released4 Jun 2026
NoOpen weightsYes
Where they match
- Context length1M tokens
- Longest reply128K tokens
- Calls toolsYes
- Thinks before answeringYes
- Conversations used for trainingUsed to train and improve the provider’s models
Availability over 3 days counts every call made through the site; this week's availability counts every call over the last 7 days, scheduled tests included, and response time comes from the site's own scheduled tests. Replies a day assumes a full daily check-in and the daily call limit.
Compare next
claude-opus-5.5 against other models
nemotron-3-ultra-550b-a55b against other models
Figures come from real calls made through this site. Models are served by third-party providers and may slow down or be withdrawn; this page follows those changes.