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AnyRouter

GPT-5.3 Codex Spark

OpenAI
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GPT-5.3 Codex Spark is a low-latency, lower-cost variant of GPT-5.3 Codex tuned for fast iterative coding inside the Codex environment, with streaming and function calling. Served through OpenAI's Responses API.

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

Run GPT-5.3 Codex Spark 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 length200,000 tokens
Max output64,000 tokens
ArchitectureTransformer
Categorytext
ReleasedMar 4, 2026
Modalities
Capabilities
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