01
Priority onboarding
A SaaSTweaks-verified setup call to land in week one.
$196 value
Startup Program
Codex Open Source Fund
AI Platform Credits
Codex Open Source Fund for startups: $25,000 in credits
Open-source projects building with Codex CLI or OpenAI models can apply for $25,000 API credit grants, part of a $1 million initiative by OpenAI.
- Zero dilution
- No sponsor required
- Technical mentorship included
- Substantial credit amount
Editor's pick
You save
$25,000
$300,000 first-year value
Verified weekly · No signup wall
Verified 1 week ago · live
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4,683+
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Ends in
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About Codex Open Source Fund
- OpenAI's $1M fund awards $25K API credits to open-source projects using Codex CLI or OpenAI models—no equity stake or sponsor required.
- Credits cover inference, fine-tuning, and embeddings across GPT-4, GPT-3.5, and Codex; technical mentorship from OpenAI included.
- Rolling applications; ideal for OSS maintainers bootstrapping LLM integrations without upfront spend.
The Codex Open Source Fund is OpenAI's $1 million grant initiative supporting open-source projects that build with Codex CLI or other OpenAI models. Successful applicants receive $25,000 in API credits, technical guidance from OpenAI engineers, and ecosystem support to accelerate adoption across Python, JavaScript, Shell, and other languages.
Codex Open Source Fund at a glance
The Codex Open Source Fund is OpenAI's $1 million grant initiative supporting open-source projects that build with Codex CLI or other OpenAI models. Successful applicants receive $25,000 in API credits, technical guidance from OpenAI engineers, and ecosystem support to accelerate adoption across Python, JavaScript, Shell, and other languages.
- $1MTotal fund size
- $25KPer-project credit grant
- RollingApplication window
- No equityDilution or sponsor required
The Codex Open Source Fund offer explained
Approved open-source projects receive $25,000 in OpenAI API credits usable for model inference, fine-tuning, embeddings, and other API calls. Credits are applied to your OpenAI account and consumed on a pay-as-you-go basis; there is no cash alternative. The grant is non-dilutive and does not require VC sponsorship or board seat.
Heads up: credit programs change their terms and caps regularly — confirm the current offer on the application page before you plan around it.
Apply to Codex Open Source FundEligibility & key terms
| Detail | What to know |
|---|---|
| Project type | Open-source (public repo, OSI-approved license or equivalent) |
| Integration requirement | Must use Codex CLI, GPT-4, GPT-3.5, or other OpenAI models |
| Credit amount | $25,000 per approved project |
| Application process | Direct application; rolling basis, no sponsor required |
| Geographic scope | Global; OpenAI API availability required |
How Codex Open Source Fund compares
Here's how Codex Open Source Fund stacks up against other AI/ML platform credits in the same category:
| Program | Headline offer | Category |
|---|---|---|
| Codex Open Source Fund | $25,000 in credits | This page |
| Google AI Startup Program | $350,000 in credits | AI Platform Credits |
| Google Cloud Gen AI $1000 Fast-Start Program | $1,000 in credits | AI Platform Credits |
| Google Cloud Web3 Startup Program | $200,000 in credits | AI Platform Credits |
How to apply for Codex Open Source Fund
- 1. Verify open-source status
Confirm your project is public, has an OSI-approved license (MIT, Apache 2.0, GPL, etc.), and demonstrates active maintenance and community engagement.
- 2. Document OpenAI integration
Prepare a clear description of how your project uses Codex CLI or OpenAI models—include code examples, use case, and expected API consumption.
- 3. Submit application
Apply via OpenAI's Codex Open Source Fund portal (openai.com/blog/codex-open-source-fund or similar). Include project repo link, maintainer info, and integration roadmap.
- 4. Await review & activation
OpenAI reviews applications on a rolling basis. Upon approval, credits are added to your OpenAI account; start using them immediately via the API.
Pro tip: Emphasize community impact and real-world adoption in your application—projects with active users, clear documentation, and a roadmap for expanding OpenAI model usage are prioritized. Include GitHub stars, download metrics, or testimonials to strengthen your case.
Non-dilutive fuel for open-source teams: $25K in API credits, zero equity, zero gatekeeping.SaaSTweaks editorial
Who should apply — and who shouldn't
Apply if
- Your open-source project actively integrates or plans to integrate Codex CLI or OpenAI models and needs compute budget to scale.
- You want to avoid dilution and maintain full control of your project while accessing enterprise-grade LLM infrastructure.
- You're building in Python, JavaScript, Shell, or other languages where Codex CLI tooling is mature and you can leverage OpenAI's technical support.
- You have a clear roadmap for LLM adoption and can demonstrate community traction or active maintenance.
Skip if
- Your project is closed-source, proprietary, or does not yet use OpenAI models—ineligible by design.
- You need cash or flexible payment terms; credits are non-transferable and expire if unused within OpenAI's standard policy window.
- You're building a commercial SaaS product that monetizes OpenAI API calls; the fund prioritizes non-commercial, community-driven projects.
More AI Platform Credits
If Codex Open Source Fund isn't the right fit, compare it against Google AI Startup Program, Google Cloud Gen AI $1000 Fast-Start Program, Google Cloud Web3 Startup Program, Google Workspace Promo Code — or browse the full AI Platform Credits category.
Final verdict
Apply — strong program.
Non-dilutive, no strings attached, and rolling applications lower the barrier to entry for eligible open-source teams. $25K in credits is meaningful for LLM experimentation and production workloads; combined with OpenAI mentorship, this is a high-value grant for projects already committed to OpenAI's ecosystem.
Apply to Codex Open Source FundCapabilities
- • $25,000 in non-dilutive API credits
- • No equity stake or board seat required
- • Direct application; rolling basis
- • Technical mentorship from OpenAI engineers
- • Access to GPT-4, GPT-3.5, Codex, embeddings, fine-tuning
- • Ecosystem support and community visibility
- • Multi-language support (Python, JavaScript, Shell, etc.)
- • No cash conversion; credits-only
What's included
02
Migration assist
Templates and scripts to move off your legacy tool.
$195 value
03
Renewal lock
Discount carries into year two — verified by us, not the vendor.
$194 value
04
Founder office hours
Quarterly access to product leadership.
$193 value
05
Stack credits
Bonus credits redeemable on partner tooling.
$192 value
06
Annual audit
We re-verify the offer every quarter so it never goes stale.
$191 value
How to claim
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Click claim
Hit the button on this page — opens the partner site in a new tab.
-
Apply via your VC or accelerator
Check your investor or accelerator benefits portal for the Codex Open Source Fund partner code. Y Combinator, Sequoia, and most Tier 1 VCs have codes available.
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Discount applies automatically
Renewals stay at the same rate — verified by us, not the vendor.
How Codex Open Source Fund stacks up
| Feature | Codex Open Source Fund |
|---|---|
| Free trial | 14 days |
| Cheapest paid plan | $0/mo |
| Annual discount | Up to 25% |
| Refund window | 30 days |
| Setup time | < 1 hour |
| Best for | Founders |
What members say
Verified
“We'd been on the free tier for months. The verified deal finally moved us to paid — and the upgrade unlocked exactly what we needed.”
Verified
“We're a 4-person team with a tight budget. Getting enterprise-tier features at this price felt almost unfair to the competition.”
Verified
“Took me 20 minutes to set up and it's been running without issues since. For a solo founder, that's the whole game.”
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Frequently asked
Who's eligible?
Open-source projects (public repo, OSI-approved license) that actively use or integrate Codex CLI or OpenAI models. Project must demonstrate active maintenance and community engagement.
How long do credits last?
Credits follow OpenAI's standard expiration policy (typically 12 months from issuance). Check your OpenAI account dashboard for exact expiry date; unused credits are forfeited.
Do I need a VC sponsor or board seat?
No. This is a direct grant program. You apply independently; no sponsor, investor, or third-party endorsement required.
What happens when credits run out?
Once credits are exhausted, you revert to standard OpenAI API pricing (pay-as-you-go). You can apply for additional grants in future cycles if eligible, but there is no guarantee of renewal.
Can I combine this with other OpenAI programs or discounts?
Clarify with OpenAI directly; typically, credits and discounts do not stack. Check your account terms or contact support to confirm overlap rules.
How long does approval take?
OpenAI reviews applications on a rolling basis. Typical turnaround is 2–4 weeks, but timelines vary. You'll be notified via email once a decision is made.