Overplane vs Switchboard

Overplane and Switchboard are both cli coding agents tracked by AIDiveForge. Below is a side-by-side comparison of pricing, capabilities, platforms, and ownership — sourced from each tool's live website and verified before publishing.

Overplane

Overplane is a free, open-source CLI binary that wraps Claude Code, Codex, or OpenCode in container isolation, spec-driven builds, and Z3 formal verification before a single line of code is written. Every agent run executes in a locked-down container with a restricted view of the host system, so a bad outcome means deleting a sandbox, not restoring a backup. Builds are content-hashed and content-addressable, which means you can replay any build down to a single spec and see the normalized dollar cost attached to that run. The ceiling appears early in teams who need the tool to also do its own code generation — Overplane is a build wrapper around agents you already own, not a coding agent itself.

Switchboard

Switchboard sits between your terminal and your CLI coding agents, inspecting each prompt and routing it to the right backend based on rules you define — local Ollama for the routine stuff, Codex for code, Claude Code when reasoning depth is worth the cost. The vendor's own benchmark reports 62% fewer premium-agent calls with a quality drop from 4.6 to 4.1 on a five-point scale — acceptable for most teams, not for teams where output consistency is non-negotiable. Sensitive prompts stay on-device by design, with zero benchmark leaks observed in testing. Routing decisions are logged with metadata-only telemetry, so you can audit what went where without storing prompt content. It ships with a Dockerfile and pyproject.toml, which means self-hosting is the deployment model — there is no hosted service.

Attribute	Overplane	Switchboard
Pricing	Free	Free
Free trial	No	No
Open source	Yes	Yes
Has API	No	No
Self-hosted option	Yes	Yes
Platforms	Linux, macOS, Windows (local binary)	—
Pros	Every agent run executes in a locked-down container with a restricted view of the host system, so a compromised or misbehaving agent destroys a sandbox rather than your local environment or production credentials. Z3 runs on per-spec and merged Intermediate Representation models before any code is generated, which means logical contradictions in your spec surface as a pre-build error rather than a 4,000-line diff you have to reverse-engineer. Content-hashed images and content-addressable outputs make builds cacheable and replayable down to a single spec, so audit requests or incident investigations do not require reconstructing what the agent did from memory. Agent-agnostic design with per-project or per-run agent selection and normalized cost tracking across runs, which means you can benchmark Claude Code against Codex on the same spec without re-architecting anything. Apache-2.0 licensed with no hosted offering and no subscription, which means the tool introduces no vendor lock-in and no data leaving your infrastructure beyond what the agent API calls require.	Deterministic on-device prompt filtering before any network call, which means sensitive prompts cannot reach a cloud API even if your routing rules are misconfigured downstream. Unified session across Ollama, Codex, and Claude Code, so context you built up in one backend is not lost when the router hands off to another — avoiding the manual copy-paste loop developers run today. Metadata-only telemetry for routing decisions, which means you get an audit trail of what went where without storing prompt content that could become a compliance liability. Vendor-reported 62% reduction in premium-agent calls at a 4.1 vs 4.6 quality score, so teams can set a quality threshold and let the router handle cost optimization rather than manually triaging every prompt. MIT-licensed with Docker and Python packaging included, which means you can fork, modify, and run it in an air-gapped environment without negotiating a commercial license.
Cons	Overplane does not include a coding agent — it drives Claude Code, Codex, or OpenCode, which means a team that does not already have those agents installed and API keys configured faces a multi-tool setup before a single build runs. Teams without an existing agent subscription hit this wall immediately and often reach for an integrated hosted tool instead. The tool is described as v0.0.8, which the vendor page does not present as production-stable. Teams evaluating it for a compliance-sensitive production pipeline face the specific problem of building internal policy around a binary that carries no stated stability guarantee — they document the version, pin it, and own the upgrade path. Formal spec verification with Z3 adds value only when specs are written to the schema Overplane expects. Teams migrating existing informal or prose-heavy spec documents spend the migration time rewriting specs before they see any verification benefit — the workflow does not adapt to how specs were written before.	No API surface exists, so any service or script that needs to call the router programmatically cannot — teams that want to integrate Switchboard into a CI pipeline or a web app hit a dead end and either fork the project to add an API layer or replace it with a router that exposes one. The quality delta between routed and always-premium output is real: the vendor's own benchmark puts routed quality at 4.1 versus 4.6 for always-premium. Teams where output feeds customer-facing copy or code review tooling will find that gap shows up in production reviews, and they end up tuning rules until the router sends most prompts to premium anyway — at which point the cost savings disappear. With 2 GitHub stars and no open issues at time of curation, the community is effectively zero. When a routing edge case surfaces in production — and it will — there is no forum thread, no maintainer response history, and no third-party fix to pull. Teams with low tolerance for debugging undocumented behavior switch to a more established local proxy with an active issue tracker.

Bottom line

Overplane and Switchboard are closely matched on pricing model, openness, and API availability — pick by feature set and platform support in the table above.

Frequently asked questions

What is the difference between Overplane and Switchboard?

Overplane is Free and open source, while Switchboard is Free and open source. Compare pricing, free trial, API, platforms, and pros/cons in the table above on AIDiveForge.

Is Overplane better than Switchboard?

It depends on your workflow. Use the side-by-side attributes (pricing, open source, API, self-hosted, platforms) to decide. AIDiveForge does not rank a universal winner — we publish verified facts so you can choose.