000 tokens. And somehow。
with no warning. OpenCode got hit the hardest. The team had to remove Claude login support after legal pressure. The commit message was literally just: “anthropic legal requests.” PI never really cared. It was never built around one provider anyway. And that kinda brings us to the obvious question. If you’re using your own API keys anyway， which open-source agent do you actually pick? OpenCode is sitting at 199K stars ， Open-source coding agents had a weird start to 2026. In January， Anthropic suddenly blocked third-party tools from using Claude subscriptions. Overnight， top of our benchmark. Again. ℹ️ We recently covered Pi Agent vs. Claude Code. Check that out if you're not sure whether Anthropic or Pi suits you better The easiest way I’d frame it is this: ， with around 8 million monthly devs. Then there’s Pi. Bare minimum by design. Four tools. A system prompt under 1， probably past 200K by the time you read this，。