// model_detail
active balanced
GPT-5.3 Chat
by OpenAI
Chat-optimized variant of the GPT-5.3 series.
Context window 128K 128K tokens
Max output 32K 32K tokens
Pricing /1M tok $1.75 in / $14.00 out per 1M tokens (API)
Released Mar 1, 2026
// specifications
Specs & capabilities
API details
- API model ID
gpt-5.3-chat-latest- Internal ID
gpt-5-3-chat- Status
- active
- Type
- balanced
Capabilities
- Vision
- 👁️ Yes
- Function calling
- 🔧 Yes
- Knowledge cutoff
- 📅 2025-04
Pricing
- Input
- $1.75 / 1M tokens
- Output
- $14.00 / 1M tokens
- Source
- First-party API pricing
// notes
Additional notes
Chat-optimized 5.3 variant
// more_from_openai
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// external_links