One prompt can now drive more of your work More support for defending infrastructure and open source See Claude’s rules updated for newer risks GPT-6 Intelligent UI makes conversations visual and interactive Claude Haiku 5.5 delivers low-cost, high-performance AI Create visual, interactive answers from a simple chat Run high-volume tasks with a cheaper fast model Share new mathematical results on GitHub to accelerate research Easier access to advanced Claude models for security work Run image, audio, and video search on-device with one model Atlassian integration makes company knowledge easier to use Decisions beta speeds up typed answers from text and images Anthropic expands safer access to advanced cyber features Enable text watermarking via API for EU compliance Claude training becomes easier for enterprise teams Anthropic invests in workforce training for enterprise adoption Enterprise adoption and training get easier Google's Gemini 4 Argon makes heavy tasks easier to offload Gemini 4 Argon is built for long professional tasks Use Astra-level performance affordably in daily work One prompt can now drive more of your work More support for defending infrastructure and open source See Claude’s rules updated for newer risks GPT-6 Intelligent UI makes conversations visual and interactive Claude Haiku 5.5 delivers low-cost, high-performance AI Create visual, interactive answers from a simple chat Run high-volume tasks with a cheaper fast model Share new mathematical results on GitHub to accelerate research Easier access to advanced Claude models for security work Run image, audio, and video search on-device with one model Atlassian integration makes company knowledge easier to use Decisions beta speeds up typed answers from text and images Anthropic expands safer access to advanced cyber features Enable text watermarking via API for EU compliance Claude training becomes easier for enterprise teams Anthropic invests in workforce training for enterprise adoption Enterprise adoption and training get easier Google's Gemini 4 Argon makes heavy tasks easier to offload Gemini 4 Argon is built for long professional tasks Use Astra-level performance affordably in daily work

Official sources only. Rumors, leaks, and get-rich schemes are excluded.

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AI BriefingOpenAIFeature Updates19:29

AI summarized from verified sources

OpenAI Launches GPT-5.3-Codex for Advanced Coding Agents

Process coding tasks faster and cheaper, enabling easier agentic development.

SOURCE CHECK

2 sources

VERIFIED

Sources

Primary / x.com

Official Docs

Supporting / developers.openai.com

Official Docs

Key Points

1Supports 400,000 token context length
2Maximum output of 128,000 tokens with streaming and function calls
3Pricing: $1.75 per 1M input, $14 per 1M output tokens
4Available across various APIs including Chat Completions

OpenAI released GPT-5.3-Codex for developers via Responses API and others. It delivers 25% faster processing with improved token efficiency and adjustable reasoning from low to extra-high complexity, handling complex coding efficiently.

What changed

OpenAI released GPT-5.3-Codex for developers via Responses API and others. It delivers 25% faster processing with improved token efficiency and adjustable reasoning from low to extra-high complexity, handling complex coding efficiently.

Why it matters

Process coding tasks faster and cheaper, enabling easier agentic development.

What to watch

Process coding tasks faster and cheaper, enabling easier agentic development. Key checks: Supports 400,000 token context length / Maximum output of 128,000 tokens with streaming and function calls / Pricing: $1.75 per 1M input, $14 per 1M output tokens.