ZenMux — 5% bonus on your first API top-up
Join ZenMux through our invite link for a 5% bonus on your first eligible recharge. A paid top-up is required.
- Deadline
- See terms
- Access
- Sign-up
LimitsFirst eligible recharge only; exact expiry and stacking rules require checkout confirmation
Opens zenmux.ai in a new tab. May be a referral link — we may earn a bonus, at no cost to you. How this works
Checked on the provider’s page
Who qualifies
New users who sign up through the invite link and complete an eligible first recharge; ZenMux confirms account eligibility at checkout.
The catch
A paid first recharge is required; this is not a free signup credit grant. Confirm the final bonus, minimum top-up, eligibility and credit expiry with ZenMux before paying. The separate $5 referral reward goes to the referrer, not the new user, and is withheld if the invitee requests a refund.
What you get
- 5% bonus on your first eligible recharge
- Prepaid credits for model API usage, including OpenAI-, Anthropic- and Google-compatible endpoints
- Sign up through the invite link before making your first recharge
At a glance
- Offer
- 5% first top-up bonus
- Type
- Free credits
- Provider
- ZenMux
- Access
- Sign-up
- Eligibility
- New users who sign up through the invite link and complete an eligible first recharge; ZenMux confirms account eligibility at checkout.
- Limits
- First eligible recharge only; exact expiry and stacking rules require checkout confirmation
- Deadline
- See the provider’s offer terms
- Last checked
- Sat, 31 Oct 2026
Details
Open the invite link, create your ZenMux account and check the bonus on the first-recharge screen before payment. The current invite offer advertises a 5% bonus. ZenMux documents Pay As You Go as prepaid usage credit; subscriptions and promotional offers have separate conditions.
Disclosure: this is our referral link. ZenMux says the referrer receives $5 in usage credits 24 hours after a qualifying first recharge, provided the invitee does not request a refund. No cash commission is claimed.
More like this
All inference apis →Together AI Startup Accelerator — up to $50K credits
Selected startups get $15K-$50K in Together platform credits plus free forward-deployed engineering hours, based on funds raised.
- Startups, tiered by amount raised; selection-based
- Catch: Selective application, not automatic. Credits do not apply to Reserved GPU Clusters. Together docs also say regular accounts have no free trial and need a minimum credit purchase ($15 first purchase per its billing docs).
OpenRouter — free model variants (:free)
OpenRouter lists open and partner models at $0 per token; request caps depend on how many credits you have bought.
- Anyone with an OpenRouter account
- 20 req/min - 50 req/day (1,000/day after $10 purchased)
- Catch: Free models change often and have tight caps. The daily limit goes up only if you buy credits ($10 or more). Free-model providers can log prompts, so check each model's data policy before sending sensitive data.
Cerebras Inference — $5 trial credits
New Cerebras accounts get $5 in credits after adding a verified payment method; credits expire in 30 days.
- New Cerebras Cloud accounts
- 5 RPM - 1M tokens/day on trial
- Catch: Payment method required to activate the credits and the API. Credits expire 30 days after grant. There is no permanently free tier: after the trial you must buy credits to keep using Shared Inference.
NVIDIA Build — free hosted inference endpoints
build.nvidia.com offers free API access to hosted models for prototyping once you join the NVIDIA Developer Program.
- Anyone with a verified NVIDIA account
- Catch: Prototyping use only: free-tier calls are rate-limited per model and by current traffic. NVIDIA does not publish one fixed limit and moderators say limits cannot be raised on the free tier (users report roughly 40 requests/min). Production needs paid or self-hosted NIM. Account verification (possibly including a phone number) may be required.