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AnyRouter

GPT-5.1 Codex Max

OpenAI
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GPT-5.1 Codex Max is a maximum-effort variant of GPT-5.1 Codex optimized for long-horizon agentic coding inside the Codex environment, with extended context and reasoning support. Served through OpenAI's Codex surfaces.

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

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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-5.1 Codex Max share card
GPT-5.1 Codex Max
OpenCode Zen upstream share card
OpenCode Zen upstream
Credits
Use your own key

Run GPT-5.1 Codex Max 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
ReleasedDec 4, 2025
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