OpenAI · Official · Blog Article
Introducing GPT-5.3-Codex-Spark
Summary
Introducing GPT-5.3-Codex-Spark—our first real-time coding model. 15x faster generation, 128k context, now in research preview for ChatGPT Pro users.
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Where the other five stand
Related: Google: State of AI in 2026: LLMs, Coding, Scaling Laws, China, Agents, GPUs, AGI | Lex Fridman Podcast #490 · Anthropic: State of AI in 2026: LLMs, Coding, Scaling Laws, China, Agents, GPUs, AGI | Lex Fridman Podcast #490 · Meta: | AI at Meta
Hype check
2/5Worth a look
Rated low: routine. Worth knowing, not worth rearranging your day for.
Prior coverage our earlier items on the same thing
- State of AI in 2026: LLMs, Coding, Scaling Laws, China, Agents, GPUs, AGI | Lex Fridman Podcast #490Lex Fridman
- Introducing GPT-5.3-CodexOpenAI News
- GPT-5.3-Codex System CardOpenAI News
- Introducing the Codex appOpenAI News
- EMEA Youth & Wellbeing GrantOpenAI News
- Introducing PrismOpenAI News
Questions people ask
- Where can I read the full story?
- On OpenAI News. The "Read this on OpenAI News" link above opens the original in a new tab. Subvolts publishes a summary and analysis, never the full piece.
- What does this mean for ChatGPT?
- Introducing GPT-5.3-Codex-Spark—our first real-time coding model. 15x faster generation, 128k context, now in research preview for ChatGPT Pro users.
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Page generated Sep 3, 2026. Summaries are Subvolts' own; the story belongs to OpenAI News.