Gemma 4 gets a stealth update that fixes tool calling bugs and truncated responses under the same name
Google quietly patched Gemma 4. Tool calling bugs fixed, truncated responses gone, Hopper performance +X%.
Why it matters
Google's stealth update to Gemma 4 addresses critical production issues (tool calling, truncation) without version bump—a sign of either rapid iteration pressure or under-the-radar fixes that enterprises relying on the model need to know about.
The key facts
10 to knowGemma 4 received unversioned update
Fixed tool calling bugs
Fixed truncated response issues
Performance improvements on Nvidia Hopper GPUs
Update shipped under same model name (version bump not transparent)
Gemma 4 updated with tool calling bug fixes
Truncated response issues resolved
Nvidia Hopper GPU performance improvements
Update released under same model name (versioning risk for users)
Published July 16, 2026
Go to the source
The Decoderthe-decoder.com
Publisher excerpt: Google shipped an update to its open AI model Gemma 4 that speeds up performance on Nvidia Hopper GPUs, fixes tool calling bugs, and addresses problems with truncated responses.