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gpt-6-luna vs nemotron-3-ultra-550b-a55b

Both run on onomeo with free credits. Everything below comes from calls made through this site.

gpt-6-luna
2 advantages
nemotron-3-ultra-550b-a55b
2 advantages

How to choose

gpt-6-lunaHigher in this week's ranking: #37Reads images
nemotron-3-ultra-550b-a55bCheaper: about 13 a reply, 100% lessOpen weights

gpt-6-luna

By OpenAI

nemotron-3-ultra-550b-a55b

By NVIDIA

Where they differ

gpt-6-lunanemotron-3-ultra-550b-a55b
On this site
1.0sAverage response this week1.1s
2,917Credits per reply13
~68Replies a day's check-in buys~288
#37Place in this week's ranking#38
The model itself
1.1M tokensContext length1M tokens
YesReads imagesNo
May 2026Knowledge cutoffNot published
22 Sep 2026Released4 Jun 2026
NoOpen weightsYes

Where they match

  • Availability, last 3 days100%
  • Availability, this week's tests100%
  • 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.

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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 Models are served by third-party providers and may slow down or be withdrawn; this page follows those changes.