Codex
Codex, the model behind GitHub Copilot, translates natural language to code; private beta in the API.
2021
2023
Claude 2
New model with a 100K token context window, available via API and the claude.ai beta in the US and UK.
Claude Instant 1.2
A faster, lower-priced model with gains in math, coding, reasoning and safety, available through the API.
2024
Claude 3.5 Sonnet
Outperforms Claude 3 Opus on key evaluations at twice the speed.
Artifacts in Claude
Claude can show generated code, documents and designs in a dedicated window beside the chat.
Canvas in ChatGPT
A new interface for writing and coding with ChatGPT.
Upgraded Claude 3.5 Sonnet and 3.5 Haiku
A refreshed, more capable Claude 3.5 Sonnet and a new Claude 3.5 Haiku model.
Analysis tool in Claude.ai
Claude can write and run JavaScript in Claude.ai for data analysis.
2025
Claude 3.7 Sonnet
First hybrid reasoning model: near-instant answers or visible extended thinking.
Claude Code
A command-line agentic coding tool, in limited research preview, delegating work from the terminal.
GPT-4.1
New API model family with gains in coding, instruction following and long context, plus a first nano model.
Codex
A cloud-based coding agent powered by codex-1, a version of o3 optimized for software engineering.
Claude 4 (Opus 4 and Sonnet 4)
Opus 4 and Sonnet 4 can use tools during extended thinking; Opus 4 is aimed at long agent tasks.
Agent building blocks on the API
The API adds code execution, an MCP connector, file storage and extended prompt caching.
Claude Code generally available
Claude Code leaves research preview, adding background tasks via GitHub Actions and beta VS Code and JetBrains extensions.
AI-powered artifacts
Artifacts can embed Claude, turning them into shareable interactive apps, with a dedicated space.
Claude Opus 4.1
An upgrade to Opus 4 on agentic tasks, real-world coding and reasoning, at the same price.
GPT-5
OpenAI's new flagship model, with leading performance across coding, math, writing and health.
Claude Code in Team and Enterprise
Team and Enterprise customers can buy premium seats that include Claude Code.
Codex upgrades
GPT-5-Codex, a version of GPT-5 optimized for agentic coding, available everywhere Codex runs.
Claude Sonnet 4.5
Leads on coding, agent building and computer use, and is the most aligned Claude model to date.
Claude Agent SDK
The building blocks behind Claude Code, released for developers to build their own agents.
Claude Code checkpoints and VS Code
Claude Code gains checkpoints to roll back changes and a native VS Code extension.
Codex generally available
Codex reaches general availability with a Slack integration, Codex SDK and admin tools.
Claude Code plugins
Bundles of slash commands, agents, MCP servers and hooks install with one command.
Claude Haiku 4.5
A small model with coding performance similar to Sonnet 4 at one-third the cost and over twice the speed.
Claude Code on the web
Delegate coding tasks from the browser to Claude running on Anthropic-managed cloud infrastructure.
Aardvark security researcher
An agent that finds, validates and helps fix software vulnerabilities, in private beta.
GPT-5.1 in the API
GPT-5.1 reaches the API with adaptive reasoning, extended prompt caching, and apply_patch and shell tools.
GPT-5.1-Codex-Max
An agentic coding model for Codex built for long-running, project-scale work.
Claude Opus 4.5
New flagship model with state-of-the-art coding and agentic performance at lower pricing.
Anthropic acquires Bun
Anthropic buys the Bun JavaScript runtime for Claude Code, which reached $1B run-rate revenue in six months.
Claude Code in Slack
Tagging @Claude in Slack starts Claude Code sessions that fix bugs and open pull requests.
GPT-5.2
Frontier model for professional work, improving reasoning, long context, coding and vision, in ChatGPT and API.
GPT-5.2-Codex
Coding model with long-horizon reasoning, large-scale code changes and stronger cybersecurity skills.
2026
Codex app for macOS
A desktop app for running multiple coding agents in parallel on long-running tasks.
Claude Agent SDK in Xcode
Xcode 26.3 integrates the Claude Agent SDK for autonomous, long-running coding tasks on Apple platforms.
Claude Opus 4.6
Upgrade to the smartest Claude model, leading on agentic coding, computer use, tool use, search and finance.
GPT-5.3-Codex
A Codex-native agent model pairing frontier coding performance with general reasoning.
GPT-5.3-Codex-Spark
A real-time coding model with 15x faster generation, in research preview for ChatGPT Pro.
Claude Sonnet 4.6
Full Sonnet upgrade across coding, computer use, long reasoning, agent planning, knowledge work and design.
Claude Code Security
Built into Claude Code on the web, it scans codebases for vulnerabilities and suggests patches; research preview.
GPT-5.4
Frontier model for professional work with stronger coding, computer use, tool search and 1M-token context.
Codex Security research preview
An application security agent that detects, validates and patches vulnerabilities in a codebase.
Code Review for Claude Code
A team of agents reviews every pull request for bugs; research preview for Team and Enterprise.
GPT-5.4 mini and nano
Smaller, faster GPT-5.4 versions for coding, tool use and high-volume API and sub-agent workloads.
Auto mode for Claude Code
Claude Code makes permission decisions itself, with built-in safeguards.
Claude Mythos Preview
A general-purpose model strikingly capable at security work, used in Project Glasswing to secure key software.
Routines in Claude Code
Repeatable routines run in the cloud to work a backlog, review PRs and respond to events.
Claude Opus 4.7
Generally available successor to Opus 4.6, with notable gains on the hardest software engineering tasks.
Codex app adds computer use
The Codex desktop app adds computer use, in-app browsing, image generation, memory and plugins.
GPT-5.5
A model built for complex tasks like coding, research and data analysis across tools.
Claude Security public beta
Scans code for vulnerabilities and proposes fixes with Opus 4.7, on the Claude Platform or via partners.
Codex in the ChatGPT mobile app
Codex tasks can be monitored, steered and approved from the ChatGPT mobile app.
Dynamic workflows in Claude Code
Claude Code can run a task across tens to hundreds of parallel subagents and check its work first.
Claude Opus 4.8
Stronger coding, agentic and professional work, with more consistency on long-running tasks.
Claude for Apple Foundation Models
A Swift package lets apps hand off reasoning from Apple on-device models to Claude.
Artifacts in Claude Code
Claude Code can preview work in progress as a live, shareable interactive artifact.
Daybreak security tools
Daybreak expands with an updated Codex Security plugin and the full GPT-5.5-Cyber.
GPT-5.6 Sol preview
Preview of a next-generation model stronger in coding, science and cybersecurity.
Claude Sonnet 5
The most agentic Sonnet yet, aimed at coding and everyday professional work.
Claude Opus 5
A step up for the Opus tier on long-running agents, coding and professional work.
Auto mode default in Claude Code
Claude Code runs auto mode by default on Pro, Max and Team plans for longer autonomous work.
Claude Fable 5.1 and Mythos 5.1
One model with two safeguard levels: Fable 5.1 generally available, Mythos 5.1 only via trusted access programs.
GPT-6 Astra
OpenAI's most intelligent model yet, state of the art in computer use, coding, cybersecurity and science.
Claude Opus 5.5
Leads in agentic coding and knowledge work, and costs 40% less to run than Opus 5 on typical workloads.
Claude Sonnet 5.5
Clear upgrade over Sonnet 5: 30%+ faster and up to 30% cheaper for most work.
GPT-6.1 Sol
Near-Astra coding and computer use at one-fifth of Astra's standard API token prices.
Claude Code mods
Small TypeScript functions that change how Claude Code works, from prompts to custom UI.
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