Last updated: April 2026
Anthropic does not have a permanent free tier on the Claude API. There are, however, four real routes to substantial free Claude credits in 2026 — and one of them (Claude for Open Source, launched February 2026) is the largest free Claude grant of the year. This is the complete map: Anthropic Startup Program, Claude for Open Source, Anthology Fund, and the small new-account credit. Plus what to do when you exhaust them all.
For the broader free LLM API map (Gemini, Groq, Cerebras, OpenRouter — none of which require credits), see Free LLM APIs in 2026. For other AI startup programs (OpenAI, Mistral, Together AI, etc.), see Free AI API Credits.
Claude free-credit routes at a glance
| Route | Value | Eligibility | Application path |
|---|---|---|---|
| New account credit | ~$5 | New Anthropic API account | Automatic on signup |
| Anthropic Startup Program | up to $25,000 | Early-stage with traction | Direct Airtable form |
| Claude for Open Source | $1,200 (6mo Max 20x) | Qualifying OSS maintainer | Direct application |
| Anthology Fund (with Menlo) | $25K credits + $100K+ investment | AI-first with strong technical depth | menlovc.com |
There is no permanent free API tier on Claude — every paid call after credits depletes is real money.
New account credit (~$5)
The default new-account credit. Automatic.
- Amount: Around $5 in API credits, applies across Claude 4.x family (Opus, Sonnet, Haiku)
- Validity: Trial, ~3 month window
- Card required: Yes, eventually — paid usage requires billing method
- How to start: console.anthropic.com → create account → API key → start sending requests
- What it covers: Roughly equivalent to OpenAI's $5 trial — enough for evaluation, not for production
If you have not created a Claude API account yet, this is the entry point.
Anthropic Startup Program (up to $25K direct)
The flagship startup credit track. Direct application, no VC required.
- Credits: Up to $25,000 in Claude API credits
- Eligibility: Early-stage companies building AI-powered products. Rolling evaluation based on:
- Traction signals (users, revenue, partnerships) - Funding stage (typically pre-Series B) - Existing Claude usage (helpful but not required)
- How to apply: Direct Airtable form linked from anthropic.com/customers/startups (rolling basis, ~2-week review)
- Validity: Credits expire 12 months after issuance
- Plus:
- Priority rate limits - Technical resources and onboarding support - Exclusive founder events
- Caveat: Must sign a publicity release within 14 days of acceptance — Anthropic uses accepted startups in case studies and marketing
This is the most accessible substantial free Claude credit. If you have a real product description and any traction signal, apply.
Claude for Open Source ($1,200 / 6mo Max 20x)
The OSS maintainer track. Launched February 2026, 10,000 total spots.
- Benefit: Six months of Claude Max 20x for free — total value $1,200
- Note: This is the Claude Max consumer subscription (used at claude.ai), not API credits. Useful for development, research, code review, and writing — not for embedding Claude in your own product
- Eligibility: Qualifying open source maintainer — demonstrated maintainership on a meaningful OSS project (developer tools, frameworks, language ecosystems, library infrastructure)
- How to apply: Direct application via the Claude for Open Source program page
- Caveat: 10,000 total spots — apply early; the program is expected to fill
- Stacks with: API credits (separate product); the OSS Max subscription does not affect API account credits
This is the largest free Claude grant available to bootstrappers in 2026 — but it is the consumer product (Claude.ai with Max 20x rate limits), not API credits. If you maintain real OSS, this is worth the application.
Anthology Fund (with Menlo Ventures)
The combined credit + investment track.
- Credits: Additional $25,000 in Claude API credits (on top of the standard Startup Program)
- Investment: Potential $100,000+ from Menlo Ventures
- Eligibility: AI-first startups with technical depth, founder background, and clear PMF signal. Evaluated separately from the Startup Program
- How to apply: menlovc.com — Anthology Fund-specific page; rolling applications
- Selection: Highly competitive (small fund, careful selection)
- Caveat: This is a venture investment route — Menlo will take equity if they invest
If you are AI-first and raising / open to a VC investment, applying to the Anthology Fund is high-leverage even if you also apply to the standalone Startup Program.
Anthropic vs OpenAI for free credits — head-to-head
| Aspect | Claude (Anthropic) | OpenAI |
|---|---|---|
| Permanent free tier | No | No |
| Trial credit | ~$5 | $5 (3 months) |
| Direct startup program | Up to $25K (rolling Airtable) | $2.5K (VC partner only) |
| OSS program | Claude for Open Source ($1.2K Max 20x) | Codex Open Source Fund ($25K) |
| Cohort program | None comparable | OpenAI Grove ($50K, SF) |
| Bootstrap-friendly | More accessible | Limited (Ramp $5K is most accessible) |
| Investment-aligned | Anthology Fund (Menlo) | Some VCs are OpenAI partners |
For bootstrapped founders without VC backing, Anthropic's program is broadly easier to access than OpenAI's. For OSS maintainers with substantial code-gen needs, OpenAI's Codex Open Source Fund is the bigger grant ($25K vs $1.2K product).
What to use when Claude credits are exhausted
Claude has no permanent free tier. After credits are gone:
- For development / writing / research: Claude.ai's free plan (rate-limited) and Pro plan ($20/month)
- For API workloads: Switch to free-tier providers — Gemini Flash (1,500 req/day), Groq (30 RPM), Cerebras (1M tokens/day), OpenRouter free models. See Free LLM APIs in 2026 for the full list
- For mission-critical reasoning: Save remaining Claude credits for queries where Claude Opus 4.x noticeably wins (long-context reasoning, code review, complex analysis); route everything else through free providers
Frequently asked questions
How do I get free Claude API credits? Four routes in 2026: (1) Small starter credit (~$5) on a new Anthropic API account. (2) Anthropic Startup Program — up to $25,000 in Claude API credits via direct rolling Airtable application. (3) Claude for Open Source program — six months of Claude Max 20x free for qualifying OSS maintainers ($1,200 value, 10,000 total spots, launched February 2026). (4) Anthology Fund (with Menlo Ventures) — additional $25,000 in credits plus potential $100,000+ investment.
Is the Anthropic Startup Program easier to get into than OpenAI? Yes for bootstrapped founders. Anthropic accepts a direct Airtable application (rolling, ~2-week review). OpenAI's $2,500 startup credits are only available via VC partner referral, with no direct path. If you have a real product description, traction signal, and existing Claude usage, Anthropic's program is broadly more accessible than OpenAI's.
What is Claude for Open Source? Claude for Open Source is Anthropic's program (launched February 2026) that gives qualifying open source maintainers six months of Claude Max 20x for free — total value $1,200, with 10,000 total spots available. Eligibility requires demonstrated maintainer status on a meaningful OSS project. The benefit is the Claude Max product (the consumer Claude.ai subscription), not API credits — useful for development work, code generation, and research.
What is the Anthology Fund? Anthology Fund is Anthropic's joint program with Menlo Ventures. It pairs Anthropic Startup Program credits ($25K+) with potential venture investment ($100,000+) from Menlo. Selection is via separate application at menlovc.com. Targeted at AI-first startups with strong technical depth and clear product-market fit.
Do Claude credits stack with OpenAI credits? Yes, completely. Claude credits live on Anthropic accounts; OpenAI credits live on OpenAI accounts. They are entirely independent programs from different vendors. Most production AI applications stack both — Claude for high-stakes reasoning where Claude Opus 4.x noticeably wins, OpenAI for queries where GPT-5 or o-series have the edge.
Related guides
- Free LLM APIs — including no-credit-required free tiers from Gemini, Groq, Cerebras
- Free AI API Credits — broader AI startup programs (OpenAI, Mistral, etc.)
- OpenAI Free Credits — comparable map for OpenAI
- Free Startup Credits 2026: Complete Guide
Got into the Anthropic Startup Program or Claude for Open Source? Tell me which and the decision time — I update this guide with friction signals and program changes.
