OpenAIActive
GPT-5.3 Chat
Chat-tuned GPT model for conversational assistance, writing, and tool workflows
Context
128,000
Max output
16,380
Input / 1M
$1.75
Output / 1M
$14.00
Providers
1
01Profile
Profile
Released
2026-03-20
Last updated
2026-03-20
Knowledge cutoff
2025-08-31
Weights
Closed
02Capabilities
Capabilities
Input
text
Output
text
Reasoning
No
Tool calling
Yes
Structured output
No
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
12+ recent events since 2026-03-20
2026-08-30Removedrequestyofferingremoved→ new
2026-08-27Price uprequestyinput / 1M$1.57→ $1.75
2026-08-27Price uprequestyoutput / 1M$12.60→ $14.00
2026-08-20Price cutrequestyinput / 1M$1.75→ $1.57
2026-08-20Price cutrequestyoutput / 1M$14.00→ $12.60
2026-08-18Addedrequestyoffering→ new
2026-08-10Removedkiloofferingremoved→ new
2026-08-10Removedopenrouterofferingremoved→ new
2026-08-10Removedvercelofferingremoved→ new
2026-07-25Removedazureofferingremoved→ new
2026-05-15Addedopenrouteroffering→ new
2026-03-20Addedzenmuxoffering→ new