GPT 5.5 (Fast)
Default frontier GPT for coding, computer use, research, and knowledge work
Context
1,000,000
Max output
128,000
Input / 1M
$12.50
Output / 1M
$75.00
Providers
1
01Profile
Profile
Released
2026-04-23
Last updated
2026-04-23
Knowledge cutoff
2025-12-01
Weights
Closed
02Capabilities
Capabilities
Input
text · image · pdf
Output
text
Reasoning
Yes
Tool calling
Yes
Structured output
Yes
Attachments
Yes
Cache read
—
Cache write
—
03Pricing
Pricing across 1 providers
Per 1M tokens, USD. Sorted by input price. First-party row highlighted.
04History
Change history
1+ recent events since 2026-04-23
2026-08-17Addedverceloffering→ new