OpenAI Codex

Claude Code

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Anthropic's terminal-based AI coding agent with Claude Opus 4.7, /ultrareview, Routines, /ultraplan, and 80.9% SWE-bench

Claude Code is Anthropic's terminal-first coding agent (GA since May 2025) that lives in your terminal and handles full development workflows. As of Week 16 (April 2026, v2.1.105–v2.1.113), Claude Opus 4.7 is the default model on Max and Team Premium with a new 'xhigh' effort level (recommended for most coding work) selectable via an interactive /effort slider. Recent shipments include /ultrareview for parallel multi-agent code review in the cloud (public research preview from Week 17, v2.1.119), Routines on Claude Code on the web for templated cloud agents triggered by schedule, GitHub events, or API, /usage breakdown showing what is driving your limits, native per-platform CLI binaries replacing bundled JavaScript, /ultraplan (Week 15) for cloud plan mode from the terminal, the Monitor tool for streaming background events, /autofix-pr to enable PR auto-fix from the CLI, /team-onboarding for replayable teammate ramp-up guides, and session recap (/recap) showing what happened in unfocused terminals. Custom themes can be built from /theme or shipped via plugins. Agent Teams enable multiple Claude Code instances to collaborate on complex tasks. Integrates with VS Code and JetBrains IDEs and supports GitHub Actions for automated code review, issue resolution, and PR creation.

• ●Terminal-based AI agent (GA since May 2025) for full development workflows
• ●Claude Opus 4.7 default on Max and Team Premium (Week 16, April 2026) with new 'xhigh' effort level and interactive /effort slider
• ●80.9% SWE-bench Verified: highest autonomous coding benchmark score

OpenAI API

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API access to GPT-5.2, Codex models, Responses API, Agents SDK, and the full OpenAI platform

The OpenAI API provides pay-per-use access to the GPT-5 family (GPT-5.2 flagship at $1.75/$14 per MTok, GPT-5 at $1.25/$10, GPT-5 Mini at $0.25/$2, GPT-5 Nano at $0.05/$0.40), Codex-oriented models for agentic coding, reasoning models (o3, o4-mini), and GPT-4.1 with 1M token context. The Responses API (launched March 2025) replaces the older Assistants API with built-in tools including web_search, file_search, and computer_use. The Agents SDK provides a Python framework for building multi-agent systems with handoffs, guardrails, and tracing. Also includes image generation (DALL-E), audio (TTS/STT), embeddings, and the Sora 2 video generation API.

• ●GPT-5.2 flagship (71.8% SWE-bench), GPT-5, GPT-4.1 (1M context), o3/o4-mini reasoning
• ●Responses API with built-in web_search, file_search, and computer_use tools
• ●Agents SDK: Python framework for multi-agent systems with handoffs and guardrails

Aider

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Open-source terminal pair programmer with git-native workflows

Aider is an open-source AI pair programming tool that runs in the terminal and keeps your workflow inside git. It can automatically create commits, apply diff-based edits across multiple files, and map your repository for large projects. Aider is model-flexible: you can use current OpenAI, Anthropic, Google, DeepSeek, and local model stacks through direct APIs, OpenRouter, Ollama, or compatible endpoints.

• ●Automatic git commits with descriptive messages
• ●Diff-based, multi-file editing directly in the terminal
• ●Works with current frontier model families (OpenAI, Anthropic, Gemini) plus DeepSeek and local models