The Best Open Source LLMs for Coding Right Now (June 2026) (opens in new tab)

The leaderboard moved — again. Between April and June 2026, at least five major open-weight coding models shipped, two of them from labs most Western developers haven't heard of. If you read a "best open-source LLMs" guide from three months ago, it's already wrong. This post is current as of June 8, 2026. Every benchmark number below has a source. Where benchmarks are self-reported by labs (which most are — we'll get into that), we say so. First: Stop Trusting HumanEval Scores Everyone above ...