Bun Pricing

open sourceopen source · MITlast verified September 6, 2026official site ↗

At a glance

All-in-one ultra-fast JavaScript and TypeScript runtime, package manager, bundler, and test runner. Free and 100% open source under the MIT License ($0 software cost). Has zero commercial licensing fees or usage restrictions across local development, CI/CD, and production workloads.

Self-hosting cost

Bun is open source under the MIT license. Self-hosting does not add a software license fee, but you still pay for infrastructure, operations, and any external model or API usage.

Free & cheaper Terminal & CLI Tools

same category, free plan or open-source license

Claude CodeClaude Code is included in Claude paid plans: Pro at $20/month ($17/month billed annually), Max 5x at $100/month and Max 20x at $200/month, and Team seats at $25/seat/month ($20 billed annually) for Standard or $125/seat/month ($100 billed annually) for Premium (5x Standard usage). Enterprise is $20/seat/month billed annually plus usage at API rates. A Free plan is available without Claude Code, and developers can also use API keys billed per token.Ghosttyopen sourceGhostty is 100% free and open-source software licensed under MIT. It operates with zero licensing fees, zero paywalled tiers, and no cloud dependencies.WarpWarp offers Free ($0) with Warp AI or bring-your-own, Build at $20/month ($18 billed annually) with $20 of agent usage, Max at $200/month ($180 billed annually) with $200 of agent usage, and Business at $50/user/month ($45 billed annually, up to 25 seats) with $20 of agent usage per seat.Ciliumopen sourceFree and 100% open source under the Apache-2.0 license (with dual GPL-2.0/BSD-2-Clause BPF datapath templates) as a CNCF Graduated project. Cilium has no software licensing fees for self-hosted or cloud Kubernetes deployments (including GKE Dataplane V2 and Azure CNI Powered by Cilium); organizations pay only for their compute infrastructure. For mission-critical enterprise environments, Isovalent Enterprise for Cilium (by Cisco) provides quote-based annual subscriptions (per-node/environment) with 24/7 SLA support, hardened LTS builds, Customer Testing Environments (CuTEs), enterprise BGP/EVPN, and advanced multi-cluster security and observability retention.

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FAQ

How much does Bun cost?

Does Bun have a free plan?

Yes — Bun is open source and free to use.

Can you self-host Bun for free?

Bun is open source under the MIT license. Self-hosting does not add a software license fee, but you still pay for infrastructure, operations, and any external model or API usage.

What are free or cheaper Bun alternatives?

Claude Code, Ghostty, Warp are in the same category with a free plan or open-source license.

pricing is editorial catalog data (last verified September 6, 2026) — vendors change plans; confirm on the official site before you buy. Reuse this data under CC-BY 4.0 via /data.