Best Alternatives to Immunefi

Bug bounties for Web3 — $10K minimum critical, up to $10M rewards. Compare 10 similar free AI tools.

1. Gitcoin — $60M+ distributed to OSS builders — $100–$50K+ per bounty, GitHub-integrated (Free: Browse bounties and claim)
2. AWS Activate — Up to $100K standard + GenAI Activate $300K for Bedrock projects (Free: $1K self-serve; $100K with VC)
3. xAI Grok API — Largest sign-up bonus — $25 + $150/mo with data opt-in (Free: $25 + $150/mo (data sharing opt-in for $150))
4. Anthropic Startup Program — $1K–$100K+ Claude credits via VC partners — premium rate limits included (Free: $1K–$100K+; VC partner required)
5. Outlier AI — Scale AI's RLHF platform — $21–50/hr for coding, writing, math expertise (Free: Apply + complete assessments; remote, flexible)
6. Obsidian Copilot — Vault-wide RAG inside Obsidian — 50+ LLM providers, 3.2K stars; bring your own API key (Free: Free; BYOK)
7. Helicone — One-line proxy — cost tracking, 95% cache savings, 100+ model providers (Free: Free self-host; 100K free cloud requests)
8. OpenClaw — Viral autonomous AI platform — 100K+ stars, multi-channel messaging, skills ecosystem (Free: Open source; 300+ models via OpenRouter)
9. Google Cloud for Startups — Up to $350K for AI-first startups ($250K yr1 + $100K yr2) (Free: $25K–$350K; VC referral for top tier)
10. FlowGPT — Monthly bounty contests + subscription creator channels for popular prompts (Free: Submit prompts; win cash prizes)

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