GPT-5.3 Codex is OpenAI specialized coding model built on GPT-5.3, optimized for advanced software development, code generation, and technical problem-solving.
Beta
Modalities
In / out price
$2.19 / $17.5
per 1M
Context
400K
Max output
128K
Released
Feb 24, 2026
Updated
Jul 17, 2026
Privacy
1 / 3Anonymous routing
Anonymous tier
- Anonymous
- Private
- E2EE
- Your identity is hidden from the inference provider.
- The inference provider can see prompt content; zero retention is not guaranteed.
Moderation
Not specified
No model-level moderation classification is recorded in this catalog.
Data retention
Not guaranteed
AnonRouter stores no payloads. Provider zero-retention is not guaranteed.
Features
8Streaming
Tool calling
Reasoning
Vision
JSON/schema
Web search
Code optimized
Prompt caching
Routing
2Anonrouter hosted
Routed through AnonRouter's gateway with metadata-only logging.
Provider direct
Requests egress directly to the provider runtime.
USD per 1M tokens from the Venice models API.