OpenAI/ GPT
GPT-5.3 Codex
openai/gpt/5-3-codex
Coding-optimized GPT model for repository edits, reviews, and agentic software work
Released
2026-02-05
Context window
400K
Max output
128K
Weights
Closed
Modalities
Input
TextImageDocument
Output
Text
Identity
- Version
- gpt-5.3-codex
- Knowledge cutoff
- 2025-08-31
- Aliases
- GPT-5.3 Codex
Providers
| Provider | Provider model ID | Protocol | Context | Max output | Input | Output | Capabilities | Notes | Pricing | Streaming |
|---|---|---|---|---|---|---|---|---|---|---|
| Poe | openai/gpt-5.3-codex | openai_chat | 400K | 128K | TextImageDocument | Text | AttachmentsReasoningTool callStructured | - | input $1.6/M · cache read $0.16/M output $13/M | Yes |
| Vivgrid | gpt-5.3-codex | openai_chat | 400K | 128K | TextImageDocument | Text | AttachmentsReasoningTool callStructured | - | input $1.75/M · cache read $0.175/M output $14/M | Yes |
| NanoGPT | openai/gpt-5.3-codex | openai_chat | 400K | 128K | TextImageDocument | Text | AttachmentsReasoningTool callStructured | - | input $1.75/M · cache read $0.175/M output $14/M | Yes |
| FastRouter | openai/gpt-5.3-codex | openai_chat | 400K | 128K | TextImageDocument | Text | AttachmentsReasoningTool callStructured | - | input $1.75/M output $14/M | Yes |
| LLM Gateway | gpt-5.3-codex | openai_chat | 400K | 128K | TextImageDocument | Text | AttachmentsReasoningTool callStructured | - | input $1.75/M · cache read $0.175/M output $14/M | Yes |
| OpenCode Zen | gpt-5.3-codex | openai_chat | 400K | 128K | TextImageDocument | Text | AttachmentsReasoningTool callStructured | - | input $1.75/M · cache read $0.175/M output $14/M | Yes |
| GitHub Copilot | gpt-5.3-codex | openai_chat | 400K | 128K | TextImageDocument | Text | AttachmentsReasoningTool callStructured | - | input $1.75/M · cache read $0.175/M output $14/M | Yes |
| Neon | gpt-5-3-codex | openai_chat | 400K | 128K | TextImageDocument | Text | AttachmentsReasoningTool callStructured | - | input $1.75/M · cache read $0.175/M output $14/M | Yes |
| FrogBot | gpt-5-3-codex | openai_chat | 400K | 128K | TextImageDocument | Text | AttachmentsReasoningTool callStructured | - | input $1.75/M · cache read $0.175/M output $14/M | Yes |
| Pioneer | gpt-5.3-codex | openai_chat | 400K | 128K | TextImageDocument | Text | AttachmentsReasoningTool callStructured | Interleaved output | input $1.75/M · cache read $0.175/M output $14/M · cache write $1.75/M | Yes |
| ZenMux | openai/gpt-5.3-codex | openai_chat | 400K | 128K | TextImageDocument | Text | AttachmentsReasoningTool callStructured | - | input $1.75/M output $14/M | Yes |
| Abacus | gpt-5.3-codex | openai_chat | 400K | 128K | TextImageDocument | Text | AttachmentsReasoningTool callStructured | - | input $1.75/M · cache read $0.18/M output $14/M | Yes |
| Azure Cognitive Services | gpt-5.3-codex | custom | 400K | 128K | TextImageDocument | Text | AttachmentsReasoningTool callStructured | - | input $1.75/M · cache read $0.175/M output $14/M | Yes |
| Azure | gpt-5.3-codex | openai_responses | 400K | 128K | TextImageDocument | Text | AttachmentsReasoningTool callStructured | - | input $1.75/M · cache read $0.175/M output $14/M | Yes |
| AIHubMix | gpt-5.3-codex | openai_chat | 400K | 128K | TextImageDocument | Text | AttachmentsReasoningTool callStructured | - | input $1.75/M · cache read $0.175/M output $14/M | Yes |
| OrcaRouter | openai/gpt-5.3-codex | openai_chat | 400K | 128K | TextImageDocument | Text | AttachmentsReasoningTool callStructured | - | input $1.75/M · cache read $0.175/M output $14/M | Yes |
| FreeModel | gpt-5.3-codex | openai_chat | 400K | 128K | TextImageDocument | Text | AttachmentsReasoningTool callStructured | - | input $1.75/M · cache read $0.175/M output $14/M · cache write $1.75/M | Yes |
| Requesty | openai/gpt-5.3-codex | openai_chat | 400K | 128K | TextImageDocument | Text | AttachmentsReasoningTool callStructured | - | input $1.75/M · cache read $0.175/M output $14/M | Yes |
| Kilo Gateway | openai/gpt-5.3-codex | openai_chat | 400K | 128K | TextImageDocument | Text | AttachmentsReasoningTool callStructured | - | input $1.75/M · cache read $0.175/M output $14/M | Yes |
| Vercel AI Gateway | openai/gpt-5.3-codex | openai_chat | 400K | 128K | TextImageDocument | Text | AttachmentsReasoningTool callStructured | - | input $1.75/M · cache read $0.175/M output $14/M | Yes |
| OpenRouter | openai/gpt-5.3-codex | openai_chat | 400K | 128K | TextImageDocument | Text | AttachmentsReasoningTool callStructured | Moderated, Default reasoning: medium | input $1.75/M · cache read $0.175/M output $14/M | Yes |
| Cloudflare AI Gateway | openai/gpt-5.3-codex | openai_chat | 400K | 128K | TextImageDocument | Text | AttachmentsReasoningTool callStructured | - | input $1.75/M · cache read $0.175/M output $14/M | Yes |
| OpenAI | gpt-5.3-codex | openai_responses | 400K | 128K | TextImageDocument | Text | AttachmentsReasoningTool callStructured | - | input $1.75/M · cache read $0.175/M output $14/M | Yes |
Capabilities
AttachmentsReasoningTool callStructured
Official price
input $1.75/M · cache read $0.175/M
output $14/M