What if every open issue had a Codex agent? That’s the idea behind Symphony, an open-source agent orchestrator for Codex that turns task trackers into always-on systems for agentic work, letting humans focus on review and direction.
GPT-5.4 Thinking delivers deeper web research, stronger context retention on long tasks, and 33% fewer factual errors than its predecessor. You can now interrupt the model mid-response and redirect it. No need to start over. Same intelligence. More control. Less token burn by default.
As Techcrunch mentioned... OpenAI will start testing targeted ads in ChatGPT for free, and $8/month Go users in the U.S., while higher-tier subscriptions remain ad-free.
Ads will appear at the bottom of conversations, can be dismissed, and won t influence ChatGPT s answers or involve selling user data. The move aims to generate revenue while keeping free access, and may also encourage some users to upgrade to paid tiers.
Codex now supports subagents, allowing you to spawn specialized, parallel AI workers for complex coding tasks. By defining custom TOML agents with isolated roles (like explorers and reviewers), you can execute multi-step workflows without context rot.
The updated OpenAI Agents SDK introduces a model-native harness and native sandbox execution. Build agents that safely inspect files, run commands, and execute code for long-horizon tasks across built-in providers like E2B, Modal, Daytona, and Vercel.
GPT-5.4 brings powerful reasoning, coding, and agentic workflows into one frontier model, now live in ChatGPT, API, and Codex. With GPT-5.4 mini (2x faster) and nano (lowest cost), build responsive AI systems for coding, subagents, and multimodal tasks. Featuring computer use, web search, and massive context, it’s designed for real-world, high-scale execution.
An application security agent that helps you secure your codebase by finding vulnerabilities, validating them, and proposing fixes you can review and patch. Now, teams can focus on the vulnerabilities that matter and ship code faster.
