Excalibur Pricing 2026
Complete pricing guide for Excalibur — plans, costs, and free options.
💰 Excalibur Pricing Overview
Excalibur uses a open source pricing model. Free and open-source software you can self-host. Current pricing: Excalibur Core is open source under Apache-2.0 and installs free from npm with `npm install -g @excalibur-oss/excalibur`; the local dashboard (`excalibur serve`) runs as a single local process with no account and no SaaS component. The site lists a separate Enterprise track alongside Core, but no figures are published on the pricing anchor — Enterprise terms are handled through the Contact page. Model inference is billed by whichever provider you point it at; the CLI displays per-run cost inline (a sample run shows $0.42). The product is labelled Beta.. Excalibur is a popular coding & development tool known for open-source coding agent with a build/don't-build discovery gate and a replayable immutable run log. You can get started with Excalibur for free and upgrade to a paid plan as your needs grow.
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🔍 Compare Before You Buy
Comparing Excalibur to similar tools helps you make the best choice for your budget and needs:
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Excalibur Plans & Pricing
Enterprise
The site lists a separate track alongside Core, but no figures are published on the pricing anchor — Enterprise terms are handled through the Contact page
the CLI displays per-run cost inline (a sample run shows
* Pricing information is based on publicly available data and may not reflect current promotions, annual discounts, or regional pricing. Visit the official Excalibur website for the latest pricing.
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Claim Now →Is Excalibur Free?
Excalibur is open-source software that you can use, modify, and self-host completely for free. This makes it an excellent choice for developers and organizations who want full control over their deployment. Some managed hosting or cloud-based versions may have associated costs.
Check Excalibur pricing at the source
The breakdown above is our summary of Excalibur's published pricing, not a quote. Plans, limits and what each tier includes change without notice — confirm on Excalibur's own pages before you buy.
Official Excalibur site ↗We do not represent Excalibur and these links are not paid placements.
Is Excalibur Worth It?
Excalibur is a free coding & development tool that offers 6 key features including Discovery gate returning build / validate / don't-build before coding starts, Immutable append-only event log: live view, replay, dashboard and audit are one stream, Fork a run from any step with the unchanged prefix replayed from cache. Excalibur is an open-source AI coding agent built around the whole product cycle rather than just the code-writing step: discover, build, verify, ship. Its Discovery gate is the part with no obvious equivalent elsewhere — before a line of code is written it weighs clarity, evidence, scope and risk on a proposed piece of work and returns a recommendation of build, validate, or don't build, turning a vague idea into a scoped work item and killing bad work before it costs anything. The engine is an immutable, append-only event log, and the company's claim is that the stream is the run: the live view, the replay, the dashboard and the audit trail are all renderings of the same bytes. That makes time-travel practical — you can scrub a run like a video, rewind live mid-session, and fork a new run from any step, with the good prefix replaying from cache for free so only what changed re-executes. `excalibur serve` opens a task-first web dashboard embedded in the CLI as a single local process with no account and no SaaS dependency, so the board runs on your own machine. Runs display their own cost and safety mode inline. Core installs from npm as @excalibur-oss/excalibur and is Apache-2.0 licensed; the project is in beta and offers a separate Enterprise track alongside the open-source core.
✅ Excalibur is a good choice if you need:
- •Discovery gate returning build / validate / don't-build before coding starts
- •Immutable append-only event log: live view, replay, dashboard and audit are one stream
- •Fork a run from any step with the unchanged prefix replayed from cache
- •Live rewind mid-session
- •Local task board served from the CLI with no account
💡 Value Assessment
With a free tier available, Excalibur is an easy recommendation for anyone looking to try coding & development tools without financial commitment. The paid plans offer good value for power users who need the additional features and higher usage limits.
Excalibur Key Features
Excalibur comes packed with features that make it a strong contender in the coding & development space. Here's what you get:
Discovery gate returning build / validate / don't-build before coding starts helps you work more efficiently with Excalibur.
Immutable append-only event log: live view, replay, dashboard and audit are one stream helps you work more efficiently with Excalibur.
Fork a run from any step with the unchanged prefix replayed from cache helps you work more efficiently with Excalibur.
Live rewind mid-session helps you work more efficiently with Excalibur.
Local task board served from the CLI with no account helps you work more efficiently with Excalibur.
Apache-2.0 licensed core on npm helps you work more efficiently with Excalibur.
Excalibur Alternatives & Their Pricing
Considering alternatives to Excalibur? Here's how competing tools compare on pricing:
Aider
Open SourceOpen-source AI pair programmer for terminal-based code editing
Pricing: Free and open-source. BYOK for LLM API costs
OpenHands
Open SourceOpen-source SWE agent that codes, browses, and runs terminal commands — 40K GitHub stars
Pricing: Open source (MIT). AllHands.ai cloud from $20/mo. Requires LLM API keys for self-hosting.
Cline
Open SourceAutonomous AI coding agent for VS Code
Pricing: Free and open-source. Bring your own API key (works with Anthropic, OpenAI, etc.)
Ready to try Excalibur?
Visit the official website for the latest pricing and to get started.
Frequently Asked Questions
Is Excalibur free to use?
Yes, Excalibur offers a free open-source version that you can use without paying. Paid plans starting at $0.42 unlock additional features and higher usage limits.
How much does Excalibur cost in 2026?
As of 2026, Excalibur pricing is: Excalibur Core is open source under Apache-2.0 and installs free from npm with `npm install -g @excalibur-oss/excalibur`; the local dashboard (`excalibur serve`) runs as a single local process with no account and no SaaS component. The site lists a separate Enterprise track alongside Core, but no figures are published on the pricing anchor — Enterprise terms are handled through the Contact page. Model inference is billed by whichever provider you point it at; the CLI displays per-run cost inline (a sample run shows $0.42). The product is labelled Beta.. Visit the official Excalibur website for the most current pricing.
What is the cheapest Excalibur plan?
The cheapest option is the free tier. If you need premium features, the most affordable paid plan is the CLI displays per-run cost inline (a sample run shows at $0.42.
Does Excalibur offer enterprise pricing?
Yes, Excalibur lists an enterprise or custom-priced plan. Contact their sales team for a quote.
What are the best alternatives to Excalibur?
Popular alternatives to Excalibur include Aider, OpenHands, Cline. Each offers different features and pricing structures. Compare them on AISO Tools to find the best fit for your needs and budget.
Is Excalibur worth the price?
Excalibur is well-regarded in the coding space, offering features like Discovery gate returning build / validate / don't-build before coding starts, Immutable append-only event log: live view, replay, dashboard and audit are one stream, Fork a run from any step with the unchanged prefix replayed from cache. Whether it's worth the investment depends on your specific needs, usage volume, and budget. The free tier lets you try it before committing to a paid plan.
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