claude-opus-5.5 vs gpt-6-luna
Both run on onomeo with free credits. Everything below comes from calls made through this site.
- claude-opus-5.5
- No edge in the figures
- gpt-6-luna
- 5 advantages
How to choose
claude-opus-5.5No edge in the figures
gpt-6-lunaCheaper: about 2,917 a reply, 57% lessSteadier: 100% up over 3 daysSteadier this week: 100% of tests passedFaster: 1.0s on averageHigher in this week's ranking: #37
claude-opus-5.5
By Anthropic
gpt-6-luna
By OpenAI
Where they differ
claude-opus-5.5gpt-6-luna
On this site
57%7 callsAvailability, last 3 days100%7 calls
66%9 testsAvailability, this week's tests100%8 tests
1.4sAverage response this week1.0s
6,732Credits per reply2,917
~29Replies a day's check-in buys~68
#47Place in this week's ranking#37
15×Credit multiplier1×
The model itself
1M tokensContext length1.1M tokens
Jun 2026Knowledge cutoffMay 2026
Where they match
- Longest reply128K tokens
- Reads imagesYes
- Calls toolsYes
- Thinks before answeringYes
- Conversations used for trainingUsed to train and improve the provider’s models
- Released22 Sep 2026
- Open weightsNo
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
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 Models are served by third-party providers and may slow down or be withdrawn; this page follows those changes.