JetBrains Junie
https://www.jetbrains.com/junie/
JetBrains' answer to Cursor Agent Mode / Devin — an autonomous in-IDE coding agent. Public beta 2024-Q4; runs alongside AI Assistant inside IntelliJ-platform IDEs. Plans, edits, runs tests; multi-model.
Active · Verified 2026-10-27 · fresh as of 2026-10-27 · 37 cited facts, 0 with a third-party source · 1 recorded change · Suggest a correction
At a glance
- Type
- Autonomous coding agent in JetBrains IDEs vendor fix
- Tier
- T2
- Section
- Agent IDEs & coding harnesses
- Latest release
- Junie CLI 26.10.20 (2026-10-21) vendor fix
- License
- not applicable — not OSS fix
- GitHub
- not applicable — no GitHub repo fix
- Pricing
- Junie Lite free; AI Pro $8.33/user/mo (10 AI credits per 30 days); AI Ultimate $25/user/mo (35 AI credits per 30 days); top-ups available vendor fix
- Funding
- JetBrains (parent) vendor fix
- Freshness
- 2026-10-27 fix
- Layer
- agent-infra repo fix
- Licensing
- commercial vendor fix
When to use
Optimised for: autonomous tasks inside JetBrains-platform IDEs
Anti-fit: JetBrains-only; beta-tier maturity
Pros & cons
Pros
Only major autonomous-agent product native to JetBrains IDEs; can drive IDE refactorings and run configs natively.
Cons
Beta; smaller mindshare than Cursor Agent Mode / Devin / Claude Code; JetBrains-only.
Claims & capabilities
JetBrains-built autonomous agent; preview Q4 2024; designed for JetBrains-platform IDEs.
Technical surface
- API surface
- JetBrains IDE plugin; Junie CLI; GitHub Action; GitLab CI/CD; ACP clients
- Backend storage
- session state in IDE
- Deployment
- IDE plugin (cloud LLM)
- Embedding model
- not applicable — not a memory product
- Multi-tenancy
- per-user
- MCP
- yes — Junie CLI and Junie in JetBrains IDEs share an MCP JSON configuration; /mcp command manages servers
- A2A
- searched not found
- OpenTelemetry
- searched not found
Alternatives to JetBrains Junie → live options ranked by shared design, licence, hosting and MCP support
Similar systems
Other agent ides & coding harnesses in the catalog, ranked by inbound references.
- Claude Code (Anthropic) T1
Anthropic's agentic coding tool: Claude as a coding agent in the terminal, IDEs (VS Code, JetBrains), desktop app, web/mobile, GitHub and Slack. Context via CLAUDE.md, skills, hooks, subagents and MCP servers.
- Cursor (IDE) T1
AI-first IDE that forked VS Code; Composer (multi-file edit) and Agent Mode (long-running coding agent) are its flagship surfaces. Memory layer = .cursorrules / Rules; recall via repo-aware Context Engine. Anysphere (parent) raised $900M Series C at $9.9B in May 2025; acquired by SpaceX (announced 2026-08-14, terms undisclosed), product continues under the Cursor brand.
- OpenAI Codex CLI T1
OpenAI's actively developed OSS terminal coding agent (Apr 2025), now written in Rust (codex-rs replaced the original TS CLI); also IDE extension + desktop app. Separate from the Codex Web cloud agent and the retired 2021 Codex model API. The codex mcp-server command (Codex as an MCP server) was deprecated on 2026-08-24 and removed in CLI 0.154.0 (2026-09-09); OpenAI points integrations to the experimental Codex app server, and codex mcp still connects Codex to external MCP servers.
- Opencode (SST) T2
SST team's open-source terminal coding agent — TypeScript, multi-model, MCP-native. Released 2025; explicitly positioned as a permissively-licensed Claude Code alternative. Memory via AGENTS.md (the emerging cross-harness convention).
- Bedrock AgentCore (AWS) T2
AWS Bedrock AgentCore — managed runtime to deploy + scale + observe agents. Multi-component: Runtime, Identity, Memory, Gateway, Browser, Code Interpreter, Observability. Distinct from Bedrock Agents (older fixed-config product); AgentCore is the 2025 framework-agnostic runtime for any agent (LangGraph, CrewAI, Strands, OpenAI Agents SDK).
- GitHub Copilot (Agent Mode) T1
The original AI coding assistant (Copilot in editor; 2021). 2025 evolved into a full agentic surface: chat, completions, Agent Mode (multi-step), and Copilot Workspace. Backed by Microsoft. Distinct row from Workspace — this row covers the everyday in-editor + agent mode product, Workspace covers the hosted spec-driven workflow.
Sources (36 cited facts, 0 third-party)
Each fact links to the page it came from; the badge says who published it (how to read sources).
- What it is Autonomous coding agent in JetBrains IDEs vendor
- What it does & what's distinct JetBrains' answer to Cursor Agent Mode / Devin — an autonomous in-IDE coding agent. Publ… vendor
- Claims / benefits JetBrains-built autonomous agent; preview Q4 2024; designed for JetBrains-platform IDEs. vendor
- Modalities text vendor
- Created 2024-10 vendor
- Latest release Junie CLI 26.10.20 (2026-10-21) vendor
- Mindshare Featured at JetBrains conferences; HN coverage on preview launch vendor
- Funding JetBrains (parent) vendor
- Customers / scale JetBrains AI subscribers (beta) vendor
- Pricing Junie Lite free; AI Pro $8.33/user/mo (10 AI credits per 30 days); AI Ultimate $25/user/… vendor
- Compliance SOC 2 (JetBrains Cloud) vendor
- Data handling Same policy as JetBrains AI Assistant vendor
- Deployment IDE plugin (cloud LLM) vendor
- HQ Czech Republic / Netherlands vendor
- Founders / pedigree JetBrains team vendor
- Memory volume / scale no scale claim vendor
- API surface JetBrains IDE plugin; Junie CLI; GitHub Action; GitLab CI/CD; ACP clients vendor
- Backend storage session state in IDE vendor
- Multi-tenancy per-user vendor
- Encryption TLS vendor
- SSO / RBAC SSO via JetBrains Account vendor
- Namespace primitives per-IDE-project vendor
- Contradiction handling human-arbitrate vendor
- MCP support yes — Junie CLI and Junie in JetBrains IDEs share an MCP JSON configuration; /mcp comman… vendor
- Validated verticals coding agents — JetBrains user base vendor
- Time to running <5min (enable in IDE) vendor
- Anti-fit JetBrains-only; beta-tier maturity vendor
- Optimised for autonomous tasks inside JetBrains-platform IDEs vendor
- Adjacent infrastructure JetBrains AI Cloud vendor
- Pros Only major autonomous-agent product native to JetBrains IDEs; can drive IDE refactorings… vendor
- Cons Beta; smaller mindshare than Cursor Agent Mode / Devin / Claude Code; JetBrains-only. vendor
- Project & sources jetbrains.com/junie; JetBrains AI blog vendor
- architecture-deployment-locus local vendor
- licensing-bucket commercial vendor
- positioning-platform-vs-product product vendor
- taxonomy-three-layer-rollup agent-infra repo
What changed
Changes to this record's lifecycle, licence, release, pricing and hosting facts, from the catalog's git history. Subscribe (Atom)
- 2026-10-27
- Latest release “not applicable — not OSS” → “Junie CLI 26.10.20 (2026-10-21)” source
- Pricing “Bundled with JetBrains AI Pro tier” → “Junie Lite free; AI Pro $8.33/user/mo (10 AI credits per 30 days); AI Ultimate $25/user/mo (35 AI credits per 30 days); top-ups available” source
- MCP support first recorded as “yes — Junie CLI and Junie in JetBrains IDEs share an MCP JSON configuration; /mcp command manages servers” source
Related systems
Referenced by (1)
- OpenRouter integrates with — OpenRouter docs have a cookbook page on using Junie CLI with OpenRouter. (verified 2026-10-29)