BlockRun.AI vs OpenAI API

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.

OpenAI API

Official OpenAPI document and an llms.txt index. Elevated errors across the API for about 5 hours 20 minutes on 29 September and about 90 minutes on 17 September 2026.

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

OpenAI API

1. Build on the Responses API. Astra calls tools only there
2. Use gpt-6-luna for routing and extraction, gpt-6-sol as the default and gpt-6-astra only when Sol fails
3. Anything pinned to gpt-5* or o3* stops on 2026-12-11. Move before then
4. Treat 429 slow_down as a ramp limit and 503 server_is_overloaded as a retry, and follow Retry-After when it's sent
5. Prompts over 272K tokens cost double on input. Trim before you pay for it