77Fox77Fox is free on the Windows desktop: the prompt library, finance and tasks, server and hardware monitoring, MCP and encrypted sync have no paywall. What you can pay for is 77Fox cloud AI, sold as four monthly plans that differ only in how many AI credits they include: Plus at £1.49 for 250K credits, Pro at £6.99 for 1.5M, Max at £21.99 for 9M and Max 20× at £36.99 for 30M. One million credits equal one US dollar of protected model cost, each cloud request settles at the provider's actual cost times 1.20, and when credits run out cloud AI simply stops. Local AI models and bring-your-own-key providers never consume credits.
This guide explains the four numbers on the pricing page, what a credit actually buys, and which features you can use without spending any.
The plans
| Plan | Price per month (GBP) | AI credits per month | Included features |
|---|---|---|---|
| Free desktop | £0 | 0 (local models and your own keys still work) | Prompt library, finance and tasks, server and hardware monitoring, MCP, encrypted sync |
| Plus | £1.49 | 250K | All cloud features |
| Pro | £6.99 | 1.5M | All cloud features |
| Max | £21.99 | 9M | All cloud features |
| Max 20× | £36.99 | 30M | All cloud features |
Prices are set and billed in GBP, tax not included; amounts shown in other currencies are approximate. You subscribe and manage your plan in the web console and can cancel at any time.
What a credit is worth
The unit is simple to reason about: 1,000,000 AI credits equal $1 of protected model cost. Each cloud request settles at the provider's actual cost multiplied by 1.20, so a request that costs the provider $0.01 consumes 12,000 credits. On the Plus plan, 250K credits therefore cover roughly $0.21 of underlying model usage per month; on Max 20×, 30M credits cover roughly $25.
When credits run out, cloud AI stops. There are no overdrafts and no surprise bills, which is the reason the plan sizes are fixed rather than metered.
What the cloud plans actually unlock
Every plan includes the same set of cloud features; only the credit allowance differs:
- Web translation. Full-page and selection translation in Chrome powered by 77Fox cloud AI, with a bilingual view and support for dynamic pages. Cache hits cost no credits.
- AI in-video ad blocking. Detection of ad segments on Bilibili and YouTube, including host-read sponsorships, skipped automatically.
- Cloud verification codes. SMS and email one-time codes delivered to the browser as suggestions beside the input field.
- AI news. Selection, translation and ranking of technology news in your interface language.
- AI assistant. The desktop voice and text assistant, with cloud models billed from the same credit pool.
- Encrypted sync. AES-256-GCM sync through your own Google Drive is listed on every plan, and the free core stays free.
When you spend nothing
Three routes bypass credits entirely:
- Local AI models. Local AI installs with one click and runs chat, speech-to-text and speech synthesis on your machine, offline. Page translation and prompt translation can also use a local model.
- Your own API key. Bring-your-own-key providers bill your own account and never touch 77Fox credits.
- The free default translation channel in the prompt library, which needs no configuration.
So a user who runs a local model for translation and the assistant, and never enables the cloud features, can use 77Fox indefinitely at £0.
Choosing a plan
| If you mostly | Consider |
|---|---|
| Want cloud verification codes and occasional page translation | Plus |
| Translate foreign-language pages daily and skip ads in long videos | Pro |
| Use the voice assistant heavily with cloud models | Max |
| Run cloud AI across several machines all day | Max 20× |
Because every plan includes the same features, the only question is how many credits you burn in a month. Start low; upgrades take effect immediately with prorated billing.
Upgrades, downgrades and cancellation
- Upgrade: takes effect immediately, billed pro rata for the remainder of the period.
- Downgrade: applies from the next period.
- Cancel: the plan stays active until the end of the paid period, then cloud AI stops. Local features continue to work.
FAQ
Is 77Fox free?
Core Windows desktop features are free. 77Fox cloud AI uses plans and credits; local models and BYOK do not consume cloud credits.
How do AI credits work?
1,000,000 AI credits equal $1 of protected model cost. Each cloud request settles at the provider's actual cost ×1.20; when credits run out, cloud AI stops, with no overdrafts and no surprise bills.
Do local models or my own API key cost credits?
No. Local AI models and bring-your-own-key providers never consume credits; only 77Fox cloud requests do.
Can I cancel or switch plans at any time?
Yes. Upgrades take effect immediately with prorated billing, downgrades apply from the next period, and a cancelled plan stays active until the end of the paid period.
What is the difference between the four plans?
Only the monthly credit allowance. All plans include the same cloud AI features.