The council recommends
On: "Rust or Go for a CLI tool?"
Top pick
Build the CLI in Go
Go is the optimal choice for general CLI tools due to its rapid compilation, approachable syntax, and rich ecosystem (such as Cobra). It produces easily distributable single binaries with minimal cross-compilation hassle. Opt for Rust only if your utility requires sub-millisecond startup times, zero-runtime memory guarantees, or systems-level manipulation.
Runner-up
Rust (via the Clap crate) if you need absolute maximum execution speed, minimal memory overhead, or embedded systems access.
Wildcard
TypeScript with Bun for single-binary compilation when your team is heavily JavaScript-centric and raw native speed is not critical.
Best time
Start immediately with Go unless your project's performance or safety benchmarks explicitly demand a zero-garbage-collector runtime.
95%
aligned
All experts unanimously recommend Go as the default choice, reserving Rust for strict performance or low-level safety needs.
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Where they agree
✓Go offers faster compile times and simpler syntax for rapid development.
✓Both languages provide portable, single-binary distribution superior to interpreted languages.
✓Rust is preferred when sub-millisecond startup, minimal memory footprint, or zero-GC safety is critical.
Where they diverge
↔Experts emphasize different CLI ecosystems, comparing Cobra/Viper in Go against Clap in Rust.
↔Confidence levels vary from moderate (68%) to high (85%) regarding whether to default strictly to Go.
↔Assessments differ on whether binary size and startup latency differences are noticeable for everyday tools.
The 3 takes
GPT-5.6 TerraLens · productivity & threat model
Go is the pragmatic default for developer tools, while Rust should be reserved for security-critical or low-level workloads.
82% confident
Claude Sonnet 5Lens · ecosystem & learning curve
Go is best for team maintainability and speed, unless absolute peak performance or tight memory limits are needed.
68% confident
Gemini 3.8 FlashLens · developer experience & latency
Choose Go for faster delivery and robust tooling unless sub-millisecond startup latency is mandatory.
85% confident
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Synthesized from 3 independent expert passes. Treat as informed input, not a guarantee. Your own judgment is the final vote.