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GPT-5.3 Codex

Most advanced agentic coding model combining frontier coding performance with broader reasoning capabilities.

gpt-5.3-codex
STABLE
400,000 context
Starting at $0.20/M input tokens
Starting at $1.50/M output tokens
Streaming
Vision
Tools
Reasoning
JSON Output

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LangRouter

langrouter/gpt-5.3-codex
Context Size
400k
Stability
STABLE
Pricing
Input
$0.2000
/M
Cached
$0.0300
/M
Output
$1.5000
/M
Capabilities
Streaming
Vision
Tools
Reasoning
JSON Output
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