Oh Fax vs eFax: price, account, and agent support
An honest comparison of Oh Fax and eFax for sending a fax in the US or Canada, with prices checked Oct 24, 2026 on eFax's own site.
Oh Fax: $1.00 per fax by card for up to 25 pages ($0.02 per page after that, 30-page cap), or $0.02 per page from a prepaid balance or USDC. No subscription, no fax number, and no account needed for card or USDC payments.
eFax pricing
eFax's pricing page lists a plan for individuals with 200 pages/month to the US and Canada and $0.10 per page over the plan, and a team plan with 500 pages/month and $0.07 per page over (eFax pricing, checked Oct 24, 2026). We could not verify the monthly dollar price. The page loads it with a script, so it didn't appear when we fetched the page. Check eFax's page for the current number.
Price per fax (US/Canada, outbound)
| Pages | eFax | Oh Fax |
|---|---|---|
| 1 page | Monthly subscription (price not verified) | $1.00 card / $0.02 balance or USDC |
| 3 pages | Monthly subscription (price not verified) | $1.00 card / $0.06 balance or USDC |
| 10 pages | Monthly subscription (price not verified) | $1.00 card / $0.20 balance or USDC |
Oh Fax prices come from our pricing page.
At a glance
| eFax | Oh Fax | |
|---|---|---|
| Account required | Yes, a subscription account. | No for card or USDC payments. An API key with a prepaid balance is optional. |
| API | eFax lists a full API on its large-organization plan. | 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 eFax | US and Canada only, up to 30 pages per fax. Outbound only. |
When eFax is better
- You need a dedicated fax number and want to receive faxes.
- Your organization needs a signed compliance agreement or business-plan features.
- You send hundreds of pages every month.
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
- eFax pricing (checked Oct 24, 2026)
The competitor prices above are taken from each competitor's own published pages. Check them before you rely on them, because they can change.