$350,000 in Azure credits is the headline. Add $2,500 in OpenAI API credits plus a pile of software licenses, and this Microsoft for Startups YC Partnership is a serious boost if you’re in an active Y Combinator batch and searching for Microsoft free credits.
YC founders trying to stretch runway, ML engineers planning training sprints, and CTOs who need real cloud scale without burning cash tend to get the most value here. GPU access is part of the story too, which is not common at this credit level.
This guide covers eligibility, the exact signup flow YC companies use, what the credits actually cover, the restrictions that trip people up, and a few practical ways to make the credits last.
Program at a Glance
| Provider | Microsoft |
| Credit Amount | $350,000 Azure + $2,500 OpenAI + licenses |
| Duration | Up to 2 years from activation |
| Eligibility | Active YC batch, for-profit, pre-Series C, software product |
| Credit Card Required? | Yes, payment method for Azure activation |
| Difficulty | Advanced; YC-only referral code and approval review |
| Best For | Azure scale, Azure OpenAI, GPU training trials |
| Official Page | Microsoft Program Page |
What You Actually Get
The core benefit is $350,000 in Azure credits that can be applied toward any Azure product listed on azure.microsoft.com/products. In practice, that spans compute (Virtual Machines, App Service, Container Apps, AKS), data and analytics (Cosmos DB, PostgreSQL, SQL Database, Synapse Analytics, Data Factory), storage and networking (Blob Storage, CDN, Virtual Network, Load Balancer), plus developer tooling like Azure DevOps, Azure Functions, and Logic Apps. For AI teams, it also covers Azure OpenAI Service usage and Microsoft’s broader AI stack (Azure AI Foundry, Azure Machine Learning, Cognitive Services).
Real-world value: $350K is enough to run a legitimate MVP and then some, especially if you’re disciplined about turning off resources correctly. It’s also one of the better deals out there for YC startups because the partnership includes priority access to ND A100 GPU VM clusters for training and fine-tuning trials (time-bound, but still meaningful).
Who Qualifies (and Who Doesn’t)
This package is exclusive to active Y Combinator batch companies. Microsoft routes eligibility through YC via a referral code, so you cannot “find a link” and brute-force your way in. If you meet the YC requirement, Microsoft still checks a handful of business and funding constraints.
- You must be an active YC batch company, because the referral code comes through YC.
- Your startup needs a software-based product as the core business (owned, not licensed).
- You must be privately held and for-profit, and you cannot be Series C (or later).
- The company has to be headquartered where Azure services are available, and you must have received under $350,000 in lifetime free Azure credits.
If you’re a YC alum but not in an active batch, you won’t qualify for the $350K YC partnership package. Also, educational institutions, government orgs, consultancies/agencies/dev shops, and crypto mining operations are explicitly excluded.
How to Sign Up
Plan for about 15 minutes, plus a short approval wait.
- Get accepted into a Y Combinator batch, since this offer is exclusive to active batch companies.
- Get the referral code from YC for the Microsoft for Startups Investor Network.
- Go to startups.microsoft.com and click “Get started now.”
- Enter the YC referral code when prompted.
- Complete the application form. You will need a LinkedIn account plus basic company details (name, stage, description).
- Select your development stage (Concept design, Prototyping, Building MVP, MVP in market, or Established market).
- Wait for approval. Average review time is about 3 business days, and the notification comes via email.
- Once approved, log in to the Microsoft for Startups Portal and click “Activate Azure.”
- Link your Microsoft account and complete Azure sign-up (this requires a payment method on file, but you will not be charged while credits are active).
- Wait for the credits to land. They can take up to 24 hours to appear on your account.
A couple of gotchas from Microsoft/YC: you cannot get the referral code from Microsoft directly, declined applications can be retried after 14 days, and submitted applications can’t be edited (you can delete and reapply if it’s still pending).
What the Credits Cover
The Azure portion is broad: Microsoft states the $350,000 can be applied toward any Azure product listed on azure.microsoft.com/products. That includes core infrastructure, managed databases, analytics tooling, and Azure’s AI/ML stack. The program also includes separate OpenAI API credits and several software subscriptions, which can materially reduce your tooling spend.
| Service / Feature | What It Does | Included? |
|---|---|---|
| Azure compute (VMs, AKS, App Service) | Run apps, containers, and clusters for production workloads. | ✓ |
| AI/ML (Azure OpenAI, AI Foundry, AML) | Build and run AI apps, training, fine-tuning, and inference. | ✓ |
| GPU infrastructure (ND A100 VMs) | Time-bound clusters for training and fine-tuning with priority access. | Partial |
| Data, storage, and networking | Cosmos DB, SQL/Postgres, Blob Storage, VNet, CDN, load balancing. | ✓ |
Notable exclusions are clear: credits can’t be used for Microsoft Azure Marketplace (third-party products), Microsoft Support Plans, or products sold separately from Azure. Also, the credits can’t be combined with other licensing, prepaid, or credit offers.
Limitations to Know About
Every big credit package has fine print. This one is generous, but it’s not a blank check for everything Microsoft sells.
- The YC referral code must come through YC, and the offer is limited to active batches (not YC alumni applying independently).
- A payment method is required during Azure activation, even though you will not be charged while credits remain active.
- GPU access is time-bound and intended for testing and trialing models, not indefinite production use.
- Advanced Azure OpenAI models (GPT-5.2, GPT-5.1, GPT-5, o3) require limited-access registration.
When credits run out (or hit the up-to-2-years expiration), your Azure account transitions to pay-as-you-go pricing. Unused credits do not roll over, and the lifetime cap through this YC package is $350,000, so you should plan as if there is no second refill.
Have Unused Microsoft Credits?
A lot of startups overestimate how much cloud they’ll actually consume, especially once the frantic training phase calms down. Credits then sit there until the clock runs out. If you have unused Microsoft credits you can’t realistically burn before expiration, AI Credit Mart lets you list them and recover real value instead of watching them expire.
Need More Microsoft Credits?
Once the free pool is gone, Azure bills add up fast. You don’t always have to pay retail, though. AI Credit Mart aggregates discounted Microsoft credits from teams with surplus allocations, and prices typically land about 30–70% below face value (availability varies).
Tips for Getting the Most Out of Your Credits
- Stack credits across providers if it makes sense; Microsoft explicitly notes YC teams commonly accept Azure, AWS, and GCP offers simultaneously.
- Plan around time-bound GPU access and schedule training sprints so you’re not scrambling at the end of the window.
- Set Azure budget alerts right after activation, because the account flips to pay-as-you-go once credits are exhausted or expire.
- Stopping a VM is not enough; you must deallocate it to stop charges.
- Check regional availability before building around a specific Azure OpenAI model, since not all models are in all regions.
Frequently Asked Questions
They’re worth $350,000 in Azure credits plus $2,500 in OpenAI API credits, with additional software benefits like GitHub Enterprise seats and Microsoft 365 Business Premium seats. The Azure credits can be applied toward any Azure product listed on azure.microsoft.com/products, which means they can fund real infrastructure (VMs, AKS, databases, storage, networking) and AI workloads (Azure OpenAI Service, Azure Machine Learning). Practically, it’s enough to run a serious MVP and do meaningful model experimentation without paying cash, as long as you manage spend. The “worth it” part is often the GPU priority access for training trials, because getting that capacity ad hoc can be difficult.
Yes, a payment method is required when you activate Azure, but you won’t be charged while credits are active.
Up to 2 years from activation.
Yes. If you have Microsoft credits you won’t use before they expire, you can list them on AI Credit Mart and sell them at up to 70% of face value. Companies regularly list surplus credits from startup programs and enterprise agreements.
AI Credit Mart has discounted Microsoft credits available from companies with surplus allocations. Prices are typically 30-70% below retail.
Your Azure account transitions to pay-as-you-go pricing, and unused credits do not roll over.
No. The referral code comes through YC, and the offer is limited to active YC batch companies.
No. Microsoft notes the $2,500 OpenAI credits are for the OpenAI API on platform.openai.com, separate from the $350,000 Azure credits (which can apply to Azure OpenAI Service usage).
If you’re in an active YC batch, this is one of the biggest Microsoft credit packages you can realistically claim. Activate it, set budgets early, and if you end up with surplus credits near expiration, you’ve got a clean way to sell them instead of wasting them.
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