TesseractThe best agentic IDEs and AI coding agents in 2026, compared.
There is no single best one: it depends on whether you want a new editor, an agent inside the editor you have, an agent in the terminal, or one app that runs several. Here are 17 of them side by side — platforms, price, which agents and subscriptions they take, and whether they are open source.
Written by Eightcell Labs, the makers of Tesseract — which is listed here, in its group, like the rest. Every other fact links to the tool’s own site, docs or repository, checked on . Prices change often; follow the links for today’s.
Agent-first editors
A whole editor built around an agent. Pick one if you want to switch editors.
| Tool | Platforms | Free tier · paid | Agents and models | Open source |
|---|---|---|---|---|
| Cursor An AI code editor with its own agent, plus a CLI. “Agents use their own computers to build, test, and demo features end to end.” Source: cursor.com/pricing, cursor.com/download, cursor.com/docs/settings/api-keys | macOS, Windows, Linux | Free (limited) · Plus $8/mo (Grok models only) · Premium $30/mo | Its own agent; other models at API prices on Premium; your own key for chat models | Not stated |
| Devin Desktop (formerly Windsurf) An IDE that opens on an agent command center; Windsurf was renamed Devin Desktop on June 2, 2026. A Kanban-style board for local and cloud agents. Source: docs.devin.ai/desktop/devin-desktop-faq, devin.ai/pricing, docs.devin.ai/desktop/acp | macOS, Windows, Linux | Free (light quota) · Pro $20/mo | Its own Devin Local agent; on Pro, ACP agents such as Codex CLI, Claude Agent, OpenCode and Gemini CLI | Not stated |
| Google Antigravity Google’s agent platform: a desktop app and a standalone IDE. “Your command center to manage multiple local agents in parallel.” Source: antigravity.google/download, antigravity.google/pricing, antigravity.google/docs/models | macOS, Windows, Linux | Individuals $0 (weekly limits) · Google AI Pro $19.99/mo raises them | Gemini, Claude and GPT-OSS models | Not stated |
| Kiro AWS’s agentic IDE, with a CLI, web interface and mobile app. Spec-driven: turns prompts into “requirements, architectural designs, and sequenced tasks”. Source: kiro.dev, kiro.dev/pricing, kiro.dev/docs/getting-started/installation | macOS, Windows, Linux | Free (50 credits) · Pro $20/mo | Its own agent, with Claude, GPT and open-weight models | Kiro Crew is; the IDE’s licence is not stated |
| Zed A code editor written in Rust, with a built-in agent. “Written from scratch in Rust to efficiently leverage multiple CPU cores and your GPU.” Source: zed.dev/download, zed.dev/pricing, github.com/zed-industries/zed | macOS, Windows, Linux | Personal $0 · Pro $10/mo | Its own agent; your API keys; external agents like Claude Agent, Codex CLI and OpenCode | Yes (GPL-3.0, parts Apache-2.0) |
Agents inside the editor you already use
An agent that lives in VS Code, JetBrains or similar. Pick one if you want to keep your editor.
| Tool | Platforms | Free tier · paid | Agents and models | Open source |
|---|---|---|---|---|
| GitHub Copilot Agent mode in VS Code, Visual Studio, JetBrains and more, a cloud agent that opens pull requests, and a CLI. “Assign tasks to agents like Copilot, Claude by Anthropic, and OpenAI Codex.” Source: github.com/features/copilot/plans, github.com/features/copilot, code.visualstudio.com/docs/copilot/agents… | Wherever those editors run, and the web | Free · Pro $10/mo · Pro+ $39 · Max $100 | Claude, GPT, Gemini, Grok and Kimi models; third-party agents on paid plans (GitHub’s own pages differ on which) | The VS Code chat extension is (MIT) |
| Cline An open-source agent for VS Code and JetBrains, with a CLI and a desktop app. “Open source. Plan-and-Act. Every model. No vendor lock-in.” Source: cline.bot/pricing, docs.cline.bot/provider-config/openai-cod…, github.com/cline/cline | macOS, Windows, Linux | Free for individuals | Your own API keys; ChatGPT plan sign-in | Yes (Apache-2.0) |
| Kilo Code An open-source agent for VS Code and JetBrains, with a CLI and a desktop app in beta. “500+ models, zero markup.” Source: kilo.ai/pricing, kilo.ai/docs/ai-providers/openai-chatgpt-…, github.com/Kilo-Org/kilocode | macOS, Windows, Linux | Free (you pay for inference) · Kilo Pass from $19/mo | 500+ models, your keys, local models; ChatGPT Plus/Pro sign-in | Yes (MIT) |
Terminal coding agents
An agent you run from the command line, often the engine inside the apps above.
| Tool | Platforms | Free tier · paid | Agents and models | Open source |
|---|---|---|---|---|
| Claude Code Anthropic’s coding agent for the terminal, also in IDEs and as a tab in the Claude desktop app. An agentic coding tool “that lives in your terminal, understands your codebase”. Source: code.claude.com/docs/en/setup, code.claude.com/docs/en/desktop-linux, claude.com/pricing | macOS, Windows, Linux (the desktop app on Linux is in beta) | Not on Claude Free · Pro $20/mo | Claude models, through a Claude plan or an API key | No |
| OpenAI Codex OpenAI’s coding agent: a CLI, an IDE extension, a cloud agent, and a Codex mode in the ChatGPT desktop app. “Choose the model, reasoning effort, permissions, and commands that fit the task.” Source: learn.chatgpt.com/docs/pricing, learn.chatgpt.com/docs/app.md, learn.chatgpt.com/docs/open-source.md | macOS, Windows, Linux | Included in ChatGPT Free, Go $8, Plus $20 and Pro; or an API key | OpenAI models; custom providers such as Ollama | The CLI is (Apache-2.0) |
| OpenCode An open-source coding agent with a terminal interface, a desktop app and an IDE extension. “Free models included or connect any model from any provider.” Source: opencode.ai/download, opencode.ai/docs/providers, github.com/anomalyco/opencode | macOS, Windows, Linux | Free · optional Go plan $10/mo | 75+ providers; ChatGPT Plus/Pro and GitHub Copilot sign-in (its docs say Anthropic prohibits Claude Pro/Max use there) | Yes (MIT) |
| Antigravity CLI Google’s terminal agent on Antigravity’s engine — the replacement Google recommends for Gemini CLI’s personal accounts. Tesseract runs Antigravity through the ACP server Google publishes for other apps. “Optimized for keyboard-driven workflows and remote SSH sessions.” Source: github.com/google-antigravity/antigravity…, antigravity.google/pricing, cdn.agentclientprotocol.com/registry/v1/l… | macOS, Windows, Linux | Same plans as Antigravity | Antigravity’s models | No licence published |
| Warp An agent-focused terminal with an Agent CLI and cloud “Factories”. “An open-source terminal built for AI-assisted software development.” Source: warp.dev/pricing, warp.dev, github.com/warpdotdev/warp | macOS, Windows, Linux | Free · Build $20/mo | Its own agent and major models; “bring your own model or harness (e.g. claude code or codex)” | Yes (client AGPL-3.0) |
One app for several agents
A desktop app that runs the terminal agents for you — useful if you use more than one.
| Tool | Platforms | Free tier · paid | Agents and models | Open source |
|---|---|---|---|---|
| Tesseractours A desktop app that runs 14 coding agents beside a code editor, a terminal and a live preview — and makes documents, decks and websites for people who don’t code. A different agent for each conversation, a plan before it acts, and agents on your other computers. Source: tesseract.dev/agentic-ide | macOS, Windows, Linux | Free · optional top-ups from $10 for the most capable models | Claude Code, OpenAI Codex, OpenCode, Gemini CLI, Antigravity CLI, Cursor’s agent CLI and 8 more; your Claude or ChatGPT sign-in, or API keys | No |
| Conductor A Mac app that runs Claude Code, Codex, Cursor and OpenCode agents in parallel, in isolated workspaces. “Create parallel Claude Code, Codex, and Cursor agents in isolated workspaces.” Source: conductor.build, conductor.build/pricing, conductor.build/docs | macOS | Free · Pro $50/mo | Those agents; “bring your own subscriptions and keys” | Not stated |
| Goose An open-source agent with a desktop app and a CLI, part of the Linux Foundation’s Agentic AI Foundation. “Your native open source AI agent.” Source: goose-docs.ai, github.com/aaif-goose/goose | macOS, Windows, Linux | Free (open source) | 15+ providers; your Claude, ChatGPT or Gemini subscription via ACP; Claude Code and Codex as providers | Yes (Apache-2.0) |
| AionUi An open-source “Cowork” desktop app with its own agent, and a front end for Claude Code, Codex, Qwen Code and others. “Built-in Agent | Zero Setup | Any API Key | Multi-Agents.” Source: github.com/iOfficeAI/AionUi | macOS, Windows, Linux | Free (open source) | Any API key, plus those external agents | Yes (Apache-2.0) |
This year
What changed in 2026.
- Cursor’s plans changed: the $8 Plus plan includes Grok models only; Premium is $30 a month. Source
- Gemini CLI stopped serving Google AI Pro, Ultra and free individual accounts; API keys and Gemini Code Assist licences still work. Google points personal users to Antigravity CLI. Source
- Windsurf was renamed Devin Desktop. Source
- The Roo Code extension was shut down and its repository archived. Source
- Anthropic stopped covering third-party harnesses such as OpenClaw under Claude subscription limits; Claude Code itself and the Claude Agent SDK still are. Source
- Crystal, a Claude Code desktop app, was deprecated in favour of Nimbalyst. Source
- The standalone Codex app became a Codex mode inside the ChatGPT desktop app. Source
Questions
Choosing an agentic IDE.
- What is the best agentic IDE in 2026?
- It depends on what you want to change. To switch editors, look at the agent-first editors (Cursor, Devin Desktop, Google Antigravity, Kiro, Zed). To keep VS Code or JetBrains, an agent inside it (GitHub Copilot, Cline, Kilo Code). If you live in the terminal, a terminal agent (Claude Code, Codex, OpenCode, Antigravity CLI, Warp). If you use more than one agent, an app that runs several (Tesseract, Conductor, Goose, AionUi).
- Which agentic IDEs are free?
- Free tiers or free use, as of this check: Cursor (limited), Devin Desktop (light quota), Google Antigravity (weekly limits), Kiro (50 credits), Zed, GitHub Copilot Free, Cline, Kilo Code (you pay for inference), OpenCode, Warp, Goose, AionUi and Tesseract. Claude Code is not on Claude’s free plan; Codex is included in ChatGPT Free.
- Can I use my ChatGPT or Claude subscription in another app?
- ChatGPT: yes, in several — Codex itself, Cline, Kilo Code, OpenCode and Tesseract’s Codex framework sign in with ChatGPT. Claude: Anthropic’s plans cover Claude Code itself and the Claude Agent SDK, but since April 4, 2026 not third-party harnesses such as OpenClaw, which need extra usage. Tesseract runs Claude Code itself, so a Pro or Max plan covers it under Anthropic’s current terms.
- What is the difference between an agentic IDE and a coding agent?
- A coding agent is the part that plans, edits files and runs commands — often a CLI such as Claude Code or Codex. An agentic IDE puts an editor, a terminal and review tools around one or more agents, so you can watch, steer and check what they do.
- What happened to Windsurf, Roo Code and Gemini CLI?
- Windsurf was renamed Devin Desktop on June 2, 2026. The Roo Code extension was shut down on May 15, 2026. Gemini CLI still exists, but since June 18, 2026 it no longer serves personal Google accounts, which Google points to Antigravity CLI.
Use more than one agent?
Tesseract runs Claude Code, Codex, OpenCode, Gemini CLI, Cursor’s agent and 8 more in one free app, beside an editor, a terminal and a live preview.