What's Changed server: fix intermittent "model not found" errors. by @rick-github in https://github.com/ollama/ollama/pull/18438 server: apply structured outputs in a single pass on thinking models by @jessegross in https://github.com/ollama/ollama/pull/18479 app: avoid System Events for ChatGPT/Codex detection by @hoyyeva in https://github.com/ollama/ollama/pull/18601 llama.cpp: version update by @dhiltgen in https://github.com/ollama/ollama/pull/18577 MLX: version bump by @dhiltgen in https://github.com/ollama/ollama/pull/18576 mlx: select Gemma 4 image resolution dynamically by @dhiltgen in https://github.com/ollama/ollama/pull/18603 mlx: speed up Qwen 3.8 prompt processing by @dhiltgen in https://github.com/ollama/ollama/pull/18550 Full Changelog: https://github.com/ollama/ollama/compare/v0.34.3...v0.34.4-rc0