Cy vs Willder

Cy and Willder are both ai agent apps 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.

Cy

Cy lives inside Slack and connects to your existing tool stack — CRM, inbox, LinkedIn, accounting software, ad accounts — executing multi-step jobs without a handoff back to you. The vendor demonstrates this with accounts receivable chasing, outbound sequence management, influencer pitching, and weekly reporting, all running on a schedule without a trigger from your team. Because there is no canvas to configure and no workflow builder to learn, setup is fast and the barrier to delegation is low. The ceiling appears when you need branching logic, conditional routing, or exceptions handled differently by account type — the page describes plain-English instructions, not configurable decision trees. Teams that need auditable step-by-step control over what Cy does when something goes wrong will find the abstraction uncomfortable.

Willder

The platform runs agents on three shared layers: a persistent memory graph, OS-grade access control, and a coordination layer that lets agents hand off work without rebuilding state. A research agent writes findings into shared memory; a drafting agent picks them up without being re-briefed. Every action lands in an approval inbox before it moves — you sign off, nothing ships without you. The vendor states retrieval from the graph-based memory is up to 35% more precise than vector-only search, citing a Lettria cross-sector study. The ceiling appears early: the free tier caps at one seat and one agent, and the concurrency limit is fixed at five parallel agents regardless of plan.

Attribute	Cy	Willder
Pricing	Paid	Paid
Price	$20/mo	$99/mo for Team (first 20 teams at $9/seat locked)
Free trial	No	No
Open source	No	No
Has API	No	No
Self-hosted option	No	No
Platforms	Slack	Web
Pros	Executes multi-tool jobs end to end inside Slack without switching context, so your team is not the integration layer between CRM updates, email sends, and Notion logs. Scheduled always-on roles mean daily work like invoice chasing or outbound sequencing runs without a daily prompt, so recurring tasks do not slip when your team is heads-down on something else. Plain-English instructions replace workflow configuration, so there is no builder to learn and delegation does not require an ops specialist to set up. Connects to 1,000-plus integrations and syncs results back to the tools already in your stack, which means you are not maintaining a parallel system of record alongside Cy. Learns from each run and logs what worked, so repeated jobs compound rather than starting from scratch each cycle — the vendor's outbound example shows it updating a playbook automatically.	Shared knowledge graph persists across every agent run, so a research agent's findings are immediately available to a drafting agent without any manual state transfer — eliminating the re-briefing overhead that kills multi-agent workflows in tools that store context per-session. Default-deny access control with scoped tokens and an immutable audit trail on every memory access, which means compliance and security reviews have a structured log to inspect rather than a trust-based sharing model with no paper trail. Approval inbox intercepts every agent action before it executes, so nothing sends to a prospect or modifies shared memory without your explicit sign-off — removing the category of failures where an autonomous agent ships something you never reviewed. Graph-based retrieval runs locally with no per-call metering, so high-volume outreach campaigns do not generate compounding API retrieval costs the way vector-search pipelines do. Five agents run in parallel on a single campaign, benchmarked by the vendor at 150-plus prospects researched and drafted per hour — which means a workflow that previously occupied a meaningful fraction of a sales rep's day runs unattended.
Cons	Plain-English instructions are the only control layer, so when a job hits an exception — a disputed invoice, a prospect who asked to be removed, an escalation that needs a different tone — there is no rule to write and no branch to configure. The task either runs incorrectly or Cy stops and waits. Teams with high exception rates will spend more time correcting outputs than they saved by delegating. There are no approval gates before Cy acts in live systems. If an outbound sequence goes to the wrong segment or an invoice is chased incorrectly, the action has already happened in HubSpot, Amplemarket, or your inbox before you see the thread summary. Teams that need to review before anything ships in a customer-facing context will need a different architecture — one that surfaces a draft and waits for sign-off. No self-hosted option exists, which is a hard stop for organizations under data residency requirements or in regulated industries where customer data cannot leave a specific environment. Teams in those categories move to a self-hostable alternative regardless of how well the workflow fits.	The concurrency cap is fixed at five parallel agents, measured on Willder's own infrastructure. Teams running enterprise-scale outreach across dozens of simultaneous campaigns cannot exceed this ceiling on any current plan — and because there is no self-hosted option, there is no workaround available. Those teams move to platforms that expose horizontal scaling or allow on-premises deployment. There is no self-hosted deployment path. Teams with data residency requirements, air-gapped environments, or policies that prohibit sending prospect data to a third-party SaaS cannot use Willder at all — the vendor's page describes no containers, no on-premises installer, and no private cloud option. The platform is in early access, which means the agent configuration surface, memory schema, and API contract are subject to change without the stability guarantees a production workflow requires. Teams building repeatable sales infrastructure on top of it carry the maintenance risk of an evolving spec.

Bottom line

Cy and Willder 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 Cy and Willder?

Cy is Paid, while Willder is Paid. Compare pricing, free trial, API, platforms, and pros/cons in the table above on AIDiveForge.

Is Cy better than Willder?

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.

Cy vs Willder: which should I pick?

Pick Cy if its pricing model, openness, or platform fit matches your constraints; pick Willder otherwise. Check free-trial availability on each listing if you want to test before committing.

Comparison data is sourced and verified by the AIDiveForge data pipeline. AIDiveForge is editorially independent.