PSA: GPT 5.5 ships with /fast mode in Codex Same model. 1.5x FASTER
@reach_vb
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Codex Transforms Messy Data Into Clean Usable Artifacts
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For knowledge work, Codex can turn messy inputs into usable artifacts: clean datasets, spot anomalies, synthesize feedback, and package the result into a sheet or report pic.twitter.com/19Kk2XY2Oa
— Vaibhav (VB) Srivastav (@reach_vb) 28 avril 2026For knowledge work, Codex can turn messy inputs into usable artifacts: clean datasets, spot anomalies, synthesize feedback, and package the result into a sheet or report
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Codex Automates Developer Workflows and Pull Request Management
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For developers, Codex can keep PR work moving: investigate feedback, make edits, run checks, and babysit CI until the work is actually ready pic.twitter.com/yu22YhPczI
— Vaibhav (VB) Srivastav (@reach_vb) 28 avril 2026For developers, Codex can keep PR work moving: investigate feedback, make edits, run checks, and babysit CI until the work is actually ready
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Codex Now Produces and Revises Spreadsheets, Docs, Slides
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Artifacts are now first-class
— Vaibhav (VB) Srivastav (@reach_vb) 28 avril 2026
Codex can produce and revise spreadsheets, docs, slides, and other files, with previews that make the output easier to inspect before you ship it pic.twitter.com/30PYT2WohiArtifacts are now first-class Codex can produce and revise spreadsheets, docs, slides, and other files, with previews that make the output easier to inspect before you ship it
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Codex Automations Enable Persistent Follow-ups and Recurring Workflows
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Automations and follow-ups make Codex useful after the first response
— Vaibhav (VB) Srivastav (@reach_vb) 28 avril 2026
Ask it to keep an eye on something, come back later, or continue a recurring workflow in the same thread pic.twitter.com/ryvFK1W9GJAutomations and follow-ups make Codex useful after the first response Ask it to keep an eye on something, come back later, or continue a recurring workflow in the same thread
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Codex Plugins Enable Tool Integration Within Unified Thread
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Plugins bring Codex closer to the rest of your work
— Vaibhav (VB) Srivastav (@reach_vb) 28 avril 2026
Codex can pull in tools and context from more apps and integrations, then use them inside the same thread pic.twitter.com/akDkPCdGBxPlugins bring Codex closer to the rest of your work Codex can pull in tools and context from more apps and integrations, then use them inside the same thread
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Image Generation Now Built Into Codex Platform
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Image generation is now built into Codex
— Vaibhav (VB) Srivastav (@reach_vb) 28 avril 2026
You can create assets for apps, games, slides, mockups, and docs without leaving the build flow pic.twitter.com/nCg3DVGGBSImage generation is now built into Codex You can create assets for apps, games, slides, mockups, and docs without leaving the build flow
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Codex In-App Browser Closes Frontend Development Loop
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The in-app browser closes the loop for frontend work
— Vaibhav (VB) Srivastav (@reach_vb) 28 avril 2026
Codex can open localhost, inspect pages, catch visual and console issues, and iterate with the page beside the code pic.twitter.com/eZvyQUhElSThe in-app browser closes the loop for frontend work Codex can open localhost, inspect pages, catch visual and console issues, and iterate with the page beside the code
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Codex Computer Use on macOS: AI Automation Beyond CLI
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Computer use on macOS lets Codex operate apps in the background: see, click, type, and validate workflows outside the terminal
— Vaibhav (VB) Srivastav (@reach_vb) 28 avril 2026
Useful when the task crosses into desktop apps, settings, simulators, or anything a CLI can't reach pic.twitter.com/XUo0s7COM8Computer use on macOS lets Codex operate apps in the background: see, click, type, and validate workflows outside the terminal Useful when the task crosses into desktop apps, settings, simulators, or anything a CLI can't reach