Home / Tech & AI
Claude and Codex Latest Features (2026): What’s New for AI Coding & Agents
Claude and Codex received major 2026 upgrades. Here’s what’s new in models, agents, browser/computer use, and which one fits your workflow.
By M. Usman
In mid-to-late 2026, the two leading AI coding agents — Anthropic’s Claude (especially Claude Code / Cowork) and OpenAI’s Codex — both received major upgrades. Claude pushed agentic coding, browser control, memory, and new flagship models (Opus 5 and Sonnet 5). Codex expanded far beyond pure coding with computer use, image generation, plugins, deeper developer workflows, and stronger long-running agent capabilities.
Here’s a clear look at the latest features of both, plus a side-by-side comparison.
Claude’s Latest Features (Anthropic)
Anthropic’s summer 2026 releases focused on making Claude more agentic, reliable for long tasks, and useful outside pure chat.
Key model updates
- Claude Opus 5 (July 2026): Thoughtful, proactive model that approaches frontier intelligence (close to Fable 5) at half the price ( / per million tokens). Strong gains on coding, agentic tasks, Frontier-Bench, and knowledge work. Default on Max plans; strongest option on Pro.
- Claude Sonnet 5 (June/July 2026): Most agentic Sonnet yet — excellent planning, tool use, coding, and autonomous work at Sonnet pricing. Native 1M-token context window and adaptive thinking on by default. See the Claude release notes for details.
Product & agent features
- Built-in browser in Claude Cowork / Claude Code Desktop: Claude can open sites in a side panel, read pages, click, type, and complete web tasks with safety controls. Claude in Chrome is generally available on paid plans with autonomous actions and prompt-injection defenses.
- Memory improvements: Cross-chat and Cowork memory, editable Topics list in settings, and a sensitive-topics toggle (details in the August 2026 release notes).
- Claude Code enhancements: Cross-session messaging, fork mode/subagents by default, auto-continue after usage limits, design/artboard workflow preview, concise output style, device cards for remote control, and ongoing cost-optimization tools. Track the latest in the Claude Code What’s New and changelog.
- Computer-use and browser-use toolsets generally available on the Claude Platform, plus Skills API, Files API, and stronger enterprise/compliance features.
- Other: Monthly recaps, break reminders, Microsoft 365 write tools, and remote/scheduled sessions.
Claude continues to emphasize local-first interactive workflows in Claude Code while adding powerful cloud and browser capabilities.
Official Claude Opus 5 announcement imagery (source: @claudeai)
Codex’s Latest Features (OpenAI)
OpenAI’s “Codex for (almost) everything” update (and subsequent releases through August 2026) turned Codex into a broader computer-using agent while strengthening its core coding strengths.
Key model & capability updates
- Stronger Codex-family models (including GPT-5.x-Codex variants and GPT-5.6 Sol / related frontier models) optimized for long-running agentic coding, multi-context-window work via compaction, and high scores on SWE-bench and Terminal-Bench style evaluations. See the GPT-5.1-Codex-Max announcement and related model updates.
- Background computer use: Codex can see, click, and type across apps on your computer (especially strong on Mac). Multiple agents can work in parallel without interfering with your own work.
App & workflow features
- Deeper developer experience: PR review and addressing comments, multiple terminals/files, SSH to remote devboxes, in-app browser for frontend iteration, rich previews (PDFs, spreadsheets, slides), and a summary pane for plans/sources/artifacts.
- Image generation & iteration (via gpt-image models) directly in the workflow — useful for UI mockups, product concepts, sprites, and game assets alongside code.
- 90+ additional plugins that combine skills, app integrations, and MCP servers.
- Memory of preferences, learning from previous actions, scheduled/ongoing tasks, and event-triggered automations (e.g., from Gmail, Slack, GitHub).
- Browser support expanded (Chrome + Edge, Brave, Opera, Vivaldi) and site tools / WebMCP.
- Integration with the broader ChatGPT desktop experience after the Codex app merger.
Codex shines at parallel cloud/sandbox work, speed, token efficiency, and expanding into general computer use and creative tasks. Full details are in the OpenAI Codex documentation and changelog.
Quick Comparison Table
| Aspect | Claude (Claude Code / Cowork) | OpenAI Codex |
|---|---|---|
| Strength focus | Deep reasoning, clean multi-file code, large context, interactive local-first | Speed, parallel agents, computer use, image gen, broader app control |
| Flagship models | Opus 5, Sonnet 5 | GPT-5.x-Codex family / GPT-5.6 variants |
| Context | Up to 1M tokens | Strong long-running via compaction; competitive windows |
| Browser / Computer use | Built-in browser + Chrome extension; platform computer/browser tools | Background computer use + in-app browser + multi-browser support |
| Agents | Subagents/fork mode, cross-session messaging | Multiple parallel agents, manager-worker patterns |
| Extra capabilities | Memory topics, design artboards, cost tools, enterprise compliance | Image generation, 90+ plugins, PR review, SSH, scheduled tasks |
| Typical workflow | Interactive terminal/IDE loop, high code quality | Cloud sandbox + local, high volume/parallel |
| Best for | Complex refactors, careful coding, long coherent sessions | Fast iteration, frontend/design loops, multi-task automation |
Which Should You Use?
Many developers run both: Claude for high-stakes reasoning, multi-file consistency, and thoughtful agentic work; Codex for speed, parallel tasks, computer-wide actions, and visual iteration. Pricing on Pro/Plus tiers is similar (around /month entry), with higher Max/Pro tiers for heavier usage.
Both platforms continue to ship weekly improvements (Claude Code What’s New and Codex digests are very active in August 2026), so the gap can shift quickly.
Getting Started
- Claude: claude.ai or Claude Code / Cowork desktop (check Anthropic docs for the latest model picker and browser setup).
- Codex: Available in the ChatGPT desktop app, CLI (@openai/codex), IDE extensions, and cloud tasks. Start at openai.com/codex and the developer docs.
The AI coding landscape in 2026 is no longer just “autocomplete on steroids.” Both Claude and Codex are evolving into capable software-engineering partners that can plan, use tools, control browsers and desktops, remember context, and ship real work. Try the newest models and features on a real project this week — the difference is noticeable.
Sources & further reading