BlockRun.AI vs GroqCloud

BlockRun.AI

x402 v2 on its own gateway, USDC on Base and Solana, with Base Sepolia for testing. The status page shows live checks only and keeps no incident history.

GroqCloud

Free plan with no card, at 30 requests a minute and 1,000 a day on gpt-oss. Four model shutdown dates between 2026-07-17 and 2026-09-21, with no stated minimum notice.

BlockRun.AI

1. Fund a dedicated wallet with a small USDC balance. The balance is the spending cap
2. Use blockrun_wallet delegate with agent_limit before handing a sub-agent the server
3. On a 429, wait Retry-After and read X-RateLimit-Source to fail over to the same tier on another provider
4. Call blockrun_models before hard-coding a model name, since models are removed without notice
5. Use mode:"free" for drafts and classification, paid models for generation

GroqCloud

1. Call /models at start-up. Four model ids stopped working this quarter
2. Read retry-after on a 429 and the x-ratelimit-remaining-tokens header before the next call
3. Free plan allows 8,000 tokens a minute on gpt-oss, so keep prompts small or batch them
4. Don't build on Qwen 3.8 27B. It's a preview and previews can go at short notice
5. Treat a 498 as Flex capacity and retry later; 5xx responses aren't billed