Catalog Systems Agent IDEs & coding harnesses JetBrains AI Assistant

JetBrains AI Assistant

https://www.jetbrains.com/ai/

JetBrains' in-IDE assistant integrated across IntelliJ, PyCharm, GoLand, WebStorm, Rider, etc. Multi-model: OpenAI, Anthropic, Google, local. Differentiated by its deep IDE-API integration — refactorings, run configs, debugger context.

Active · Verified 2026-10-26 · fresh as of 2026-10-26 · 56 cited facts, 0 with a third-party source · 1 recorded change · Suggest a correction

At a glance

Type
IDE AI assistant — chat, completions, AI actions (JetBrains) vendor fix
Tier
T1
Section
Agent IDEs & coding harnesses
Created
2023-12 vendor fix
Latest release
not applicable — not OSS fix
License
not applicable — not OSS fix
GitHub
not applicable — no GitHub repo fix
Pricing
$8.33/mo Personal / $16.50/mo Business AI add-on vendor fix
Funding
JetBrains (private; revenue ~$400M+ per Forbes) vendor fix
Freshness
2026-10-26 fix
Layer
agent-infra repo fix
Licensing
commercial vendor fix
Deployment locus
ide vendor fix
Platform vs product
product vendor fix

When to use

Optimised for: in-IDE chat + completions + native refactoring integration

Anti-fit: JetBrains-only; less agentic than Cursor/Claude Code (Junie covers that)

Pros & cons

Pros

Tightest IDE-API integration in the category — agent can drive native refactorings, run configs, debugger; only major in-IDE assistant with first-class JetBrains pedigree.

Cons

JetBrains-only; agentic-mode is delegated to Junie (separate product); less aggressive multi-file edits than Cursor.

Claims & capabilities

Available on all JetBrains IDEs; multi-model; companion to Junie (autonomous agent) launched 2024.

Technical surface

API surface
JetBrains IDE plugin
Backend storage
local IDE + JetBrains AI cloud
Deployment
IDE plugin (cloud LLM by default; offline/self-host options)
Embedding model
not applicable — not a memory product
Multi-tenancy
per-user; Business per-org
MCP
yes — MCP server built into all IntelliJ-based IDEs since 2025.2 (standalone mcp-jetbrains deprecated)
A2A
searched not found
OpenTelemetry
searched not found

Alternatives to JetBrains AI Assistant → 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 (55 cited facts, 0 third-party)

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What changed

Changes to this record's lifecycle, licence, release, pricing and hosting facts, from the catalog's git history. Subscribe (Atom)

  1. 2026-10-26
    • MCP support first recorded as “yes — MCP server built into all IntelliJ-based IDEs since 2025.2 (standalone mcp-jetbrains deprecated)” source
    #258

Related systems

References (2)