Our take: Best for developers using coding agents, SaaS product teams, and startups collecting in-app feedback with no-code form building.
Main limitation: Free plan limited to 200 responses/month and shows 'Powered by Fillo' badge; hosted in EU only
By the AI Tool Atlas editors.
Based on the vendor's official documentation; we have not tested this product hands-on. What “documented overview” means
Is Fillo right for you?
Best for developers using coding agents, SaaS product teams, and startups collecting in-app feedback with no-code form building. Based on the vendor's documentation, not on a hands-on test.
Best for: Developers using coding agents (Claude, Cursor, Copilot)
Also a good fit for
SaaS product teams needing embedded forms
Startups collecting in-app feedback or support requests
Teams managing form submissions and file uploads
Consider another tool if need to hide Fillo branding on free tier (requires paid plan)
Or if
Require response volumes above 100k/month
Need US data residency (EU-only hosting)
Fillo pricing and usage limits
Prices checked Sep 29, 2026 on the official US pricing page. Official pricing ↗ Prices and limits change often.
Free access and trial conditions
Free tier includes full product with 200 responses/month, no time limit, no credit card required. All features available except badge removal.
Volume over 100k/month available (write to [email protected] for custom pricing)
Prices exclude VAT and sales tax; added at checkout by Stripe
What is Fillo, and how does it work?
Fillo is a forms platform designed to be built into products by coding agents or a visual builder. It handles validation, file uploads, responses, versions and delivery behind embedded forms. It offers an SDK, API, embed options and MCP support, plus integrations like Google Sheets, Notion, Slack, HubSpot and Zapier. Forms and responses are hosted in the EU. Built specifically for agent-driven form generation and developer-first usage.
Fillo's official site: how the product presents itself. fillo.so, captured Oct 1, 2026
What you provide and what you get back
What you give Fillo and what comes back, from its documentation
You provide
Form prompts/descriptions (for coding agents)
Visual form designs (builder)
File uploads to connected storage
User responses
You get back
Embedded forms in React, Vue, Svelte, Astro apps
Response submissions with validation
Exported CSV responses
Webhook notifications
Connected storage uploads
Where you can use it
Platforms
Web (React, Vue, Svelte, Astro, plain browser), API (REST), MCP (Model Context Protocol for agents)
Account
Required
One accepted form submission counts as one response; resubmitting edit-in-place also counts; drafts/partial entries do not count
Free: unlimited visual-builder, up to 200 code-defined; paid tiers: unlimited code-defined
Up to 5GB per file, resumable, multiple files per response
Feature overview on the official site. fillo.so, captured Oct 1, 2026
Visual and code-defined forms
Create forms in visual builder or define in code (JSX or defineForm); support for field types, conditional logic, answer piping, multi-page forms Works with coding agents and manual workflows
Access: Included on all tiers (up to 200 code-defined forms on Free)Limit: Free: up to 200 code-defined forms per workspacesource (opens in a new tab)
SDK with custom fields and headless mode
React SDK, framework-agnostic DOM renderer, custom field types, headless composition with FilloProvider or createFormController, URL prefill, hidden fields Full control over form appearance and behavior; integrates with product design system
Browser-direct uploads to connected storage (up to 5GB per file, resumable); multiple large files supported; files stored in user's own storage Offload file handling; users keep control of where files are stored
Send responses to external systems via signed webhooks; export responses to CSV; integrations with Google Sheets, Notion, Slack, HubSpot, Zapier; respondent receipts and email notifications Connect responses to downstream workflows and team tools
Going over allowance does not stop a form Forms keep collecting; never drops submissions; optional upgrade nudge at 80%/100%documentedsource (opens in a new tab)
Integrations with Sheets, Notion, Slack, HubSpot, Zapier Connect responses to existing tools and workflowsdocumentedsource (opens in a new tab)
Limitations to check before paying
Free plan shows 'Powered by Fillo' badge Branding visible on free tier; removal requires paid plandocumentedsource (opens in a new tab)
Free plan capped at 200 responses/month Limited for high-volume feedback collectiondocumentedsource (opens in a new tab)
Yes. Free is €0 with no time limit and no card required. It includes every product feature, unlimited visual-builder forms, up to 200 code-defined forms per workspace, and 200 completed responses a month. Subscribe to Everything when you need more responses or want to hide the badge. source (opens in a new tab)
What happens if I go over my allowance?
Your forms keep collecting. Fillo never closes a form or drops a submission because a workspace went over its allowance. At 80% and 100% of allowance, workspace owners get an email and see a note in the app. You're never charged automatically, and your plan never changes unless you change it. source (opens in a new tab)
Can I pay yearly?
Yes. Yearly costs ten times the monthly price, so two months are free. Examples: $390/year, $990/year, $2,490/year. The allowance is still counted per calendar month. source (opens in a new tab)
Where is Fillo hosted?
Fillo runs on EU servers, and form responses are stored there too. Uploaded files go to the storage you connect (Google Drive, Box, or S3/R2 bucket) so they are never on Fillo's servers. source (opens in a new tab)
Not verified: Pricing for volumes above 100k/month (contact sales); Enterprise features or custom deployment options.
How we documented and maintain this page
Every fact about Fillo above comes from the 3 official pages listed here, last compared on Sep 29, 2026; we have not run Fillo ourselves, so it has no editorial score. How we check and re-check pages.
Article updated Oct 10, 2026; prices checked Sep 29, 2026. Outbound links to vendors are plain links; we do not earn commissions. How we review · Report an error
