Is Claude Code open source?

No. Claude Code is closed source.

Can OpenCode use Claude models?

Yes. OpenCode supports Anthropic as a provider. Recheck the current Anthropic and OpenCode policy before making any Claude Pro or Max subscription claim on the live page.

Can Claude Code use non-Claude models?

No. Claude Code supports switching among Claude models, but it does not support non-Claude providers.

Does OpenCode have LSP feedback?

Yes, optionally. OpenCode docs say LSP is disabled by default and must be enabled.

Yes. Both OpenCode and Claude Code support MCP.

Which one should I use?

Pick OpenCode if open source, provider choice, or local models are central requirements. Pick Claude Code if you are standardized on Claude and want the most polished official workflow around it.

Where does Nimbalyst fit?

Nimbalyst fits above the harness layer as the open-source visual workspace for teams managing multiple agent sessions with shared planning, visual editors, and mobile review.

Comparison

OpenCode vs Claude Code

OpenCode and Claude Code solve the same core problem from different starting points. OpenCode is the open-source, provider-flexible coding agent. Claude Code is Anthropic's official coding agent for Claude. Nimbalyst is an open-source visual workspace that runs Claude Code and OpenAI Codex side by side, with pluggable agent harnesses, so teams evaluating both can keep them in one workflow.

Download

Also available for: macOS Apple Silicon macOS Intel Windows Linux

Overview

Two tools, different approaches

Nimbalyst

Nimbalyst is an open-source visual workspace that runs Claude Code and OpenAI Codex side by side, with pluggable agent harnesses including OpenCode. It adds a session kanban, planning and task tracking, visual editors for markdown, mockups, diagrams, data models, and code, and a native iOS app for mobile review. Desktop and iOS apps are MIT licensed. The collaboration server is AGPL.

Claude Code

Claude Code is Anthropic's official coding agent. It runs in the terminal, supports a desktop workflow, and is deeply integrated with the Claude product surface, including model switching within Claude, MCP connectivity, hooks, skills, plugins, subagents, and Remote Control. It is the reference implementation for Claude-first workflows.

Feature Comparison

Side-by-side breakdown

Feature

Nimbalyst

Claude Code

License

MIT for desktop and iOS apps. AGPL for the collab server.

Closed source

Agent engines

Claude Code, OpenAI Codex, OpenCode, and pluggable harnesses inside one workspace

Claude models only, inside the Claude Code runtime

Provider flexibility

Pluggable; runs multiple harnesses with their own provider support

Low: Claude models only

Local models

Available through harnesses that support local providers

Not supported

Workspace layer

Session kanban, plans, trackers, visual editors, mobile review

Terminal and desktop workflow centered on the agent runtime

Visual editors

Markdown, mockups, diagrams, data models, spreadsheets

Code-first; visual artifacts live in external tools

MCP support

Yes; ship custom servers and skills as extensions

Yes; first-party MCP, hooks, skills, plugins, subagents

Remote and mobile continuation

Native iOS app for sessions, transcripts, diffs, and approvals

Remote Control plus claude.ai/code and Claude mobile follow-up

Pricing model

Free download, bring your own model usage

Anthropic subscription or API credits with model access varying by plan

Nimbalyst Advantages

Where Nimbalyst shines

Heterogeneous agents in one workspace

Run OpenCode alongside Claude Code and Codex inside the same project. Sessions share plans, files, trackers, and review surfaces instead of forcing a single-harness choice.

Workspace above the harness layer

OpenCode and Claude Code compete at the harness layer. Nimbalyst is the coordination layer: session kanban, plan docs, visual editors, and review across all of them.

Native mobile review

Review agent runs, approve tool calls, and read transcripts from a phone. Useful when long OpenCode or Claude Code runs need a human checkpoint between sessions.

Honest Assessment

Where Claude Code is stronger

Product coherence

Anthropic controls the model family, the tool UX, the surrounding docs, and the remote and desktop surfaces. This usually produces a smoother first-run experience than a more modular open-source harness.

First-party Claude features

Skills, hooks, plugins, subagents, MCP, and Remote Control are documented as one coherent system rather than as a collection of community conventions.

Polished Claude-native workflow

Claude Code is the reference implementation for Claude-first workflows. If a team is standardized on Claude and wants the most official path, Claude Code is the default answer.

Recommendation

Who should use which

Choose Nimbalyst if…

Your team runs multiple agent sessions, wants Claude Code and Codex side by side with optional OpenCode, and needs shared planning, visual editors, and mobile review around them.

Choose Claude Code if…

You are standardized on Claude and want the most polished official workflow around it, with first-party Claude features and Anthropic's docs as the source of truth.

More Comparisons