Skip to content
AnyRouter

GPT-5.3 Codex

OpenAI
Try in playgroundCompare

GPT-5.3 Codex is the Codex-environment variant of GPT-5.3 for agentic coding with streaming, function calling, and structured outputs.

Providers
Capabilities
OpenCode Zen
opencode-zen-byok
$0
$0
Unavailable
Usage analytics

Loading usage…

API & code
Uptime & Health
No uptime data yet

These providers haven't been health-probed for this model yet. The router still routes around upstreams that fail live requests — uptime fills in once probe history accrues.

Share cards
GPT-5.3 Codex share card
GPT-5.3 Codex
OpenCode Zen upstream share card
OpenCode Zen upstream
Credits
Use your own key

Run GPT-5.3 Codex on your own key — your requests are billed by the provider. Pool callers pay AnyRouter credits.

No BYOK keys configured for this model yet.

Share a key with the pool to earn credits for every request it serves, covering your plan cost.

Text generation
Context length400,000 tokens
Max output128,000 tokens
ArchitectureTransformer
Categorytext
ReleasedFeb 25, 2026
Modalities
→
Capabilities
Back to models