GPT-5.3 Chat (latest)
Chat-tuned GPT model for conversational assistance, writing, and tool workflows
Context
400,000
Max output
128,000
Input / 1M
$1.75
Output / 1M
$14.00
Providers
5
01Profile
Profile
Released
2026-03-03
Last updated
2026-03-03
Knowledge cutoff
2025-08-31
Weights
Closed
02Capabilities
Capabilities
Input
text · image
Output
text
Reasoning
No
Tool calling
Yes
Structured output
Yes
Attachments
Yes
Cache read
$0.17
Cache write
Not listed
03Pricing
Pricing across 5 providers
Per 1M tokens, USD. Sorted by input price. First-party row highlighted.
04History
Change history
12+ recent events since 2026-03-03
2026-09-08Added302aioffering→ new
2026-09-02DeprecatedopenaiStatus—→ deprecated
2026-08-27Removedorcarouterofferingremoved→ new
2026-08-24Removedcloudflare-ai-gatewayofferingremoved→ new
2026-08-23Addedopperoffering→ new
2026-08-14Addedcloudflare-ai-gatewayoffering→ new
2026-08-10Removedllmgatewayofferingremoved→ new
2026-06-03Price upllmgatewayinput / 1M—→ $1.75
2026-06-03Price upllmgatewayoutput / 1M—→ $14.00
2026-06-03Price upmerge-gatewayinput / 1M—→ $1.75
2026-06-03Price upmerge-gatewayoutput / 1M—→ $14.00
2026-05-27Addedmerge-gatewayoffering→ new