Both Claude Code and Codex offer a "fast mode". Their best models both have context windows up to 1m tokens.
Claude Code includes 1m token context windows in your subscription, but makes you pay for fast mode.
Codex includes fast mode in your subscription, but makes you pay for higher context windows.
I don't think this matters that much but I did find it interesting.
So far, Opus 5 feels like a strange but useful in-between of gpt-5.6-sol and Fable 5
It has a lot of Fable's taste, but also comes with gpt-5.6's thoroughness and, well, "autism" (it takes things super literally).
It writes code that is slightly worse to look at than Fable, but more likely to be correct. It regularly is catching things that Fable missed.
So far, feels like a good compromise compared to 5.6's messy code and Fable's habit of being too clever to be correct.
I think I'm gonna like this model a lot.
OPENAI 🔥: New Codex Realtime Voice Mode references have been spotted on ChatGPT!
A "general-purpose agentic assistant" will allow users to operate Codex Agent via real-time voice in order to execute a wide range of complex tasks: "checking Slack, Spotify, documents, calendar, browsing, shopping, or food ordering."
This means that ChatGPT users will finally get access to Connectors via the Voice Mode!
> Earlier, Realtime Voice mode was spotted in development on the Codex app, where it will appear as an Orb or through Pets. It is yet unclear if this implementation will go live in that exact form, as it is not yet present in the ChatGPT desktop app.
> Anthropic has started rolling out an upgrade to its voice mode as well, allowing users to chat with Opus and Sonnet models to perform complex tasks, including those that require Connectors and tool use.
> The timeline remains unclear; however, a number of OpenAI employees have been teasing "Codexy" vibes for today.
honestly, we don't need smarter models anymore.
gpt 5.6 and fable 5 are already smart enough.
the real issue is the cost.
i’d rather save $2,000 a month on API costs than get a 1% improvement on some benchmark score.
Grok Build now has Workflows feature
Workflows can be created with /create-workflow
They're for multi-agent pipelines you want to run repeatedly with a fixed structure