claude-opus-5.5 vs deepseek-flash
Both can be used on onomeo. Everything below comes from calls made through this site.
- claude-opus-5.5
- No edge in the figures
- deepseek-flash
- 4 advantages
How to choose
claude-opus-5.5No edge in the figures
deepseek-flashSteadier this week: 100% of tests passedFaster: 0.5s on averageHigher in this week's ranking: #1Open weights
claude-opus-5.5
By Anthropic
deepseek-flash
By DeepSeek
Where they differ
claude-opus-5.5deepseek-flash
On this site
78%14 callsAvailability, last 3 days—
83%18 testsAvailability, this week's tests100%1 tests
1.3sAverage response this week0.5s
5,185Credits per reply—
#31Place in this week's ranking#1
17×Credit multiplier1×
The model itself
128K tokensLongest reply943.7K tokens
Jun 2026Knowledge cutoffMay 2025
22 Sep 2026Released10 Sep 2026
NoOpen weightsYes
Where they match
- Context length1M tokens
- Reads imagesYes
- 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. Free models are counted in calls, big models in credits.
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 Models are served by third-party providers and may slow down or be withdrawn; this page follows those changes.