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claude-haiku-5.5 vs gpt-oss-20b

Both can be used on onomeo. Everything below comes from calls made through this site.

claude-haiku-5.5
2 advantages
gpt-oss-20b
1 advantage

How to choose

claude-haiku-5.5Longer context: 1M tokensReads images
gpt-oss-20bOpen weights

claude-haiku-5.5

By AnthropicNew this week

gpt-oss-20b

By OpenAI

Where they differ

claude-haiku-5.5gpt-oss-20b
On this site
—Availability, last 3 days99%115 calls
—Availability, this week's tests98%203 tests
—Average response this week1.2s
Charged by usagePrice per replyFree
UnrankedPlace in this week's ranking#4
$6.67Price per million charactersFree
The model itself
1M tokensContext length128K tokens
128K tokensLongest reply32K tokens
YesReads imagesNo
Jun 2026Knowledge cutoffJun 2024
7 Oct 2026Released5 Aug 2025
NoOpen weightsYes

Where they match

  • 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 are charged by usage, in US dollars.

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 Models are served by third-party providers and may slow down or be withdrawn; this page follows those changes.