GPT-5.3-Codex-Spark

Name: GPT-5.3-Codex-Spark (Research Preview)
Author: OpenAI

Coding modelGPT-5.3

GPT-5.3-Codex-Spark (Research Preview)

Release date: 2026-02-12Updated: 2026-03-08 21:06:20

GPT-5.3-Codex-Spark (Research Preview) is an AI model published by OpenAI, released on 2026-02-12, for Coding model, and 128K context length, under the 不开源 license.

Data sourced primarily from official releases (GitHub, Hugging Face, papers), then benchmark leaderboards, then third-party evaluators. Learn about our data methodology

GPT-5.3-Codex-Spark

Model basics

Reasoning traces

Supported

Thinking modes

Thinking Level · Medium (Default)Thinking Level · LowThinking Level · HighThinking Level · Extra-High

Context length

128K tokens

Max output length

16K tokens

Model type

Coding model

Release date

2026-02-12

Model file size

No data

MoE architecture

Total params / Active params

No data / N/A

Knowledge cutoff

No data

GPT-5.3-Codex-Spark

Open source & experience

Code license

不开源

Weights license

不开源

GitHub repo

GitHub link unavailable

Hugging Face

Hugging Face link unavailable

Live demo

No live demo

GPT-5.3-Codex-Spark (Research Preview)

Model Overview

GPT-5.3-Codex-Spark (Research Preview) is an AI model published by OpenAI, released on 2026-02-12, for Coding model, and 128K context length, under the 不开源 license.

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GPT-5.3-Codex-Spark

Model basics

Open source & experience

Official resources

API details

Benchmark Results

Publisher

Model Overview

DataLearner on WeChat

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