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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
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OpenAI Pricing for GPT-5.3 Codex

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openai/gpt-5.3-codex
Context Size
400k
Stability
STABLE
Pricing
Input
$1.75
/M
Cached
$0.17
/M
Output
$14.00
/M
Capabilities
Streaming
Vision
Tools
Reasoning
JSON Output
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