Oh Fax vs FaxZero: price, account, and agent support
An honest comparison of Oh Fax and FaxZero for sending a fax in the US or Canada.
Oh Fax: $2.00 per fax by card for up to 100 pages. No subscription, no fax number, and no account needed for card or USDC payments.
FaxZero pricing
We compare FaxZero's paid premium fax: $3.29 per fax for up to 25 pages to the US or Canada, with no branding and no daily limit (FaxZero FAQ).
Price per fax (US/Canada, outbound)
| Pages | FaxZero | Oh Fax |
|---|---|---|
| 1 page | $3.29 (premium) | $2.00 by card |
| 3 pages | $3.29 (premium) | $2.00 by card |
| 10 pages | $3.29 (premium) | $2.00 by card |
Oh Fax prices come from our pricing page.
At a glance
| FaxZero | Oh Fax | |
|---|---|---|
| Account required | No account; an email address is required. | No for card or USDC payments. An API key with a prepaid balance is optional. |
| API | FaxZero's FAQ points to an API at a sister service, edwyna.com. We did not check that service's pricing. | REST API at app.ohfax.com/api/v1 |
| AI agent / MCP | None published. | Remote MCP at https://app.ohfax.com/mcp. Paid MPP requests need no account. |
| Coverage | See FaxZero | US and Canada only, up to 100 pages per fax. Outbound only. |
When FaxZero is better
- You need to send internationally. FaxZero sends outside the US and Canada, and Oh Fax does not.
- You want a fax web form for people and no agent or API.
When Oh Fax is better
- You want an AI agent (Claude, ChatGPT, Cursor, Codex) to send the fax without signing up or keeping a subscription.
- You send faxes occasionally and want to pay per fax.
- You want an exact quote before you pay, and an automatic refund if the fax can't be delivered.
Switch in a minute
Add https://app.ohfax.com/mcp to your agent as an MCP server, or open ohfax.com and upload a PDF. See the MCP setup guide.
Sources
The competitor prices above are taken from each competitor's own published pages. Check them before you rely on them, because they can change.