Originally published on NextFuture
TL;DR — Quick Verdict
Feature
Rating
Notes
Background Computer Use (macOS)
⭐⭐⭐⭐
Genuinely impressive. Runs parallel agents in background.
Memory & Personalization
⭐⭐⭐
Rolling out to Enterprise/Edu first — not everyone yet.
90+ New Plugins
⭐⭐⭐⭐
Atlassian, CircleCI, GitLab, Render, Neon — solid coverage.
In-App Browser
⭐⭐⭐
Only useful for localhost apps right now.
Image Generation (gpt-image-1.5)
⭐⭐⭐⭐
Useful for mockups directly in dev workflow.
Pricing
⭐⭐
Heavy use gets expensive fast on ChatGPT plans.
Platform Support
⭐⭐
macOS only for computer use. EU/UK rollout delayed.
Bottom line up front: The April 16 Codex update is the biggest leap OpenAI has made in developer tooling since Codex launched. Background computer use is legitimately novel. Memory and automation scheduling are game-changers — when they actually reach your account. The plugin ecosystem at 90+ is now broader than most developers will ever need. But there are real tradeoffs: macOS-only computer use, staggered rollouts, and a pricing model that punishes heavy automation. Read on for the full breakdown.
What Dropped on April 16, 2026
OpenAI announced what it calls "Codex for (almost) everything" — a positioning shift from Codex-as-code-assistant to Codex-as-full-software-partner. The key new capabilities:
Background computer use on macOS: Codex can now see, click, and type with its own cursor across any macOS app — running in parallel without interfering with your own work.
In-app browser: A built-in browser where you can comment directly on pages to give the agent precise frontend instructions.
Image generation: Codex now uses
gpt-image-1.5to generate and iterate on visual assets (mockups, product concept art, UI designs) directly inside the workflow.Memory: Codex remembers your preferences, corrections, and gathered context across sessions. Reduces repeated setup for recurring tasks.
Automations with scheduling: Codex can schedule future work for itself and wake up automatically across days or weeks to continue long-running tasks.
90+ new plugins: Including Atlassian Rovo (JIRA), CircleCI, CodeRabbit, GitLab Issues, Microsoft Suite, Neon by Databricks, Remotion, and Render.
Dev workflow improvements: PR review comment handling, multiple terminal tabs, SSH to remote devboxes (alpha), rich file previews (PDFs, spreadsheets, slides).
This is also paired with the April 15 Agents SDK evolution, which adds native sandbox execution (via E2B, Vercel, Cloudflare, Modal, and more), a Manifest abstraction for portable environments, and durable execution so agents can survive container restarts.
Background Computer Use: What It Actually Means for Developers
This is the headliner feature — and it earns it. Previously, Codex operated on code files and terminal output. Now it can see your screen, click buttons, fill forms, and interact with any macOS app — apps that don't expose APIs, GUI-only tools, even games.
Practical examples from the announcement:
Iterating on frontend changes inside Figma or Sketch while you work in another window
Testing your desktop app's UI without writing automation scripts
Operating design tools, spreadsheets, or legacy software that has no API surface
Multiple agents can run in parallel. You could have one agent running visual regression tests while another is reviewing a GitHub PR and a third is updating a JIRA ticket — simultaneously, without stealing your mouse.
Memory: Genuinely Useful, But Still Rolling Out
Codex now preserves context from previous sessions — your coding preferences, project-specific conventions, things you've corrected it on before. Combined with the new proactive suggestions feature (Codex proposes what to work on next based on your project context, open PRs, Slack activity), this starts to feel less like a tool and more like a colleague.
The practical use case is compelling: if you've spent an hour teaching Codex your preferred state management patterns or file structure conventions, it remembers that next time. No re-explaining.
Catch: Memory and personalization are rolling out to Enterprise, Edu, and EU/UK users "soon." If you're on a standard ChatGPT Plus plan, you may not see these features for weeks. OpenAI's staged rollouts have historically been slow.
Automations: Scheduling Your Own Agent
One of the most underrated announcements: Codex can now schedule future work for itself and re-use existing conversation threads — preserving context across multi-day tasks. Real-world use cases teams are reportedly already using:
Landing open pull requests nightly
Following up on tasks across Slack + Notion + Gmail
Monitoring fast-moving conversations and summarizing for async teams
This brings Codex closer to what Devin was promising a year ago — a software engineer that keeps working even when you're offline.
The 90+ Plugin Ecosystem
The plugin expansion is comprehensive. Here are the ones developers will reach for most:
Plugin
What it Adds
Best For
Atlassian Rovo
JIRA ticket management, project context
Teams on JIRA
CircleCI
CI/CD pipeline visibility & control
Backend / DevOps
CodeRabbit
AI-powered code review integration
Teams wanting automated PR review
GitLab Issues
GitLab issue tracking + context
GitLab shops (finally)
Neon by Databricks
Serverless Postgres context + query gen
Full-stack developers
Render
Deploy and manage Render services
Indie hackers & small teams
Remotion
Video generation in code workflows
Content-heavy apps
Notably absent: a native Railway plugin. If you're using Railway for deployment (and you probably should be — it's the cleanest zero-config platform for Node.js and full-stack apps right now), you can still use it alongside Codex via the terminal. Railway's one-click deploys pair naturally with Codex-generated code: Codex writes and reviews, Railway ships. It's the workflow stack I'd recommend for indie developers who want Codex-speed development without managing infrastructure.
The New Agents SDK: Sandbox-Native Agent Execution
Alongside the Codex desktop update, OpenAI's Agents SDK (updated April 15) gets native sandbox support. This is significant for developers building their own agent systems — not just using the Codex app.
from openai_agents import Agent, Sandbox
# Define agent with sandbox execution
agent = Agent(
name="review-agent",
instructions="Review the PR diff and suggest improvements",
tools=["shell", "apply_patch", "read_file"],
sandbox=Sandbox(
provider="e2b", # or "vercel", "cloudflare", "modal"
manifest={
"mount": "./project",
"output": "./review-output"
}
)
)
result = agent.run("Review PR #142 and apply suggested fixes")
print(result.artifacts)
Key Agents SDK improvements:
Configurable memory — agents can persist state across runs
Sandbox providers: E2B, Vercel, Cloudflare, Blaxel, Daytona, Modal, Runloop — pick your stack
Manifest abstraction — portable environment descriptions (mount S3, GCS, Azure Blob, Cloudflare R2)
Durable execution — agent state is externalized; container crash ≠ task lost
Native MCP + skills + AGENTS.md — standard agentic primitives built in
from openai_agents import Agent, Memory, AutomationSchedule
# Agent with memory + scheduled follow-up
agent = Agent(
name="pr-watcher",
memory=Memory(scope="project"), # persists across runs
instructions="Monitor open PRs and flag stale ones daily"
)
# Schedule to run daily at 9am
agent.schedule(AutomationSchedule.daily(hour=9))
agent.run("Check for PRs open > 7 days and notify in Slack")
⚠️ The Controversy: What They Don't Tell You
Developer communities have been excited — but not uniformly. Here's what the honest Reddit and HN threads are flagging:
1. Computer Use = Screenshot Streaming to OpenAI Servers
Background computer use works by sending screenshots of your screen to OpenAI's models for interpretation. This is the same fundamental privacy concern raised against Recall and other screen-capture AI tools. If you're working with proprietary code, client data, or anything under NDA — be cautious. OpenAI's data usage policies for Codex apply here, and the nuance matters.
2. macOS Only — and EU/UK Are Third-Class Citizens Again
Computer use is macOS only at launch. No Windows. No Linux. European and UK users are getting memory and computer use "soon" — which in OpenAI's track record means 4-8 weeks minimum. If you're a developer outside the US or on Windows, the headline feature doesn't exist for you yet.
3. Cost at Scale Gets Brutal
Automations that run overnight, schedule themselves, and chain tasks sound great — until you see the token bill. Heavy Codex automation use on ChatGPT Pro can easily burn through $50-100/month at scale. OpenAI hasn't published per-task pricing for the automation scheduling features, which is a deliberate omission developers on Hacker News were quick to note. See our earlier post on Codex's token pricing for the full breakdown.
4. The "Almost" in "Codex for Almost Everything"
The in-app browser currently only controls localhost apps — it can't fully navigate the open web yet. OpenAI says "over time we plan to expand it so Codex can fully command the browser beyond web applications on localhost." That's a lot of future tense in a launch announcement.
Codex vs. The Competition (April 2026)
Tool
Computer Use
Memory
Scheduling / Automations
Plugin Ecosystem
Pricing
Best For
**OpenAI Codex**
✅ macOS
✅ (rolling out)
✅ Schedule + wake up
90+ plugins
ChatGPT Pro $20-200/mo
Full-stack devs on macOS
**Cursor 3**
❌
⚠️ Limited
❌
Agent-first IDE
$20/mo + usage
Editor-centric workflows
**Claude Code**
❌
via MEMORY.md
❌
MCP ecosystem
Per-token (API)
Power users, custom stacks
**Devin**
✅ (web)
✅
✅
Moderate
$500/mo (ACUs)
Enterprise teams
**GitHub Copilot Workspace**
❌
❌
❌
GitHub native
$10-19/mo
GitHub-centric teams
Practical Code Example: Combining Agents SDK + Codex Plugins
from openai_agents import Agent, Plugin, Memory
# Agent that handles daily PR review using CodeRabbit + CircleCI plugins
agent = Agent(
name="daily-dev-agent",
instructions="""
Every morning:
1. Check for new PRs since yesterday
2. Run CodeRabbit review on each PR
3. Check CircleCI status for failing tests
4. Summarize findings and post to Slack
""",
plugins=[
Plugin("coderabbit"),
Plugin("circleci"),
Plugin("slack"),
Plugin("github")
],
memory=Memory(scope="project", retention_days=30)
)
# This agent will now remember your team's review preferences
# from previous runs and adapt its suggestions accordingly
agent.run("Daily morning dev review")
Should You Switch to / Upgrade Codex?
✅ Use It If:
You're on macOS and want computer use for GUI-only tools
You have repetitive dev tasks (PR reviews, daily standups, JIRA updates) that could be automated
Your team is already in the ChatGPT ecosystem and has Pro/Enterprise accounts
You work on frontend development and want to iterate on visual designs + code in one workflow
You want the most integrated agent-native coding experience available right now
❌ Don't Use It If:
You're on Windows or Linux (computer use isn't available yet)
You work with sensitive/proprietary data and are uncomfortable with screen capture streaming
You're cost-sensitive — heavy automation can get expensive fast
You're in the EU/UK and want the full feature set today (not "soon")
You prefer editor-native workflows over a separate app experience (Cursor 3 may suit you better)
What This Means for the Broader Dev Stack
The Codex update — combined with the new Agents SDK sandbox support — signals that OpenAI is positioning Codex as the orchestration layer for your entire software development lifecycle. Not just writing code, but understanding codebases, reviewing changes, managing project context, talking to CI/CD, deploying, and iterating on design.
If you want to see how the Agents SDK compares to managed agent APIs and model-agnostic frameworks, check out our Claude Managed Agents deep dive for the alternative architecture perspective.
For the editor-side story — how Cursor 3's "agent-first" IDE fits alongside (or competes with) Codex — see our Cursor 3 deep dive.
For Developers Building Their Own Products
One thing the Codex update underlines: agent-native applications are becoming the default expectation. If you're building a SaaS or developer tool, users will increasingly expect agentic features. The AI Frontend Starter Kit ($49) includes pre-built agent UI patterns and scaffolding for integrating with OpenAI's Agents SDK — so you're not starting from scratch when adding these capabilities to your own product.
Verdict
The April 2026 Codex update is legitimately the most significant developer AI release since Claude Code landed. Background computer use alone changes what's possible for automation workflows. The plugin ecosystem at 90+ is now serious infrastructure. Memory and automations, when they fully roll out, will feel transformative.
The catches are real: macOS only, privacy concerns with screen capture, staggered rollouts, and opaque pricing for automation-heavy use. But if you're a macOS developer and you haven't revisited Codex since it launched — April 2026 is the moment to do that.
Rating: 4.2 / 5 — Best AI coding assistant update of 2026 so far, with real limitations that prevent a perfect score.
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