* gemma4: implement Gemma 4 model for MLX (text-only runtime)
* gemma4: two MoE + SWA prefill perf fixes
Two performance optimizations in the gemma4 forward pass
1. Memoize the sliding-window prefill mask across layers.
2. Softmax only over the selected experts in Router.Forward.
* review comments
Gemma 4 prompts differ when thinking is disabled for different sized
models: 26b/31b emit an empty thought block, while e2b/e4b do not.
Before #15490, our shared Gemma 4 renderer effectively matched the
e2b behavior. #15490 changed it to always emit the empty thought block,
which regressed e2b/e4b nothink behavior and led to #15536 (and possibly
This change restores the previous shared behavior by removing the empty
trailing thought block. It also renames the checked-in upstream chat
templates so the e2b and 31b fixtures are tracked separately.
A follow-up will split Gemma 4 rendering by model size.
Fixes: #15536
For some versions of Xcode, cmake builds are failing due to header problems in
cross-compiling during the generate phase. Since generate is producing arch
independent generated output, we can skip this during cross-compiling.
* mlx: add op wrappers for Conv2d, Pad, activations, trig, and masked SDPA
Add Conv2d, flexible Pad (with axes/mode), PadConstant, Maximum,
Minimum, Softplus, ReLU, GLU, Clamp, Sin, Cos, Clip,
ScaledDotProductAttentionMasked, and RoPEWithFreqs. Refactor
RoPEWithBase to delegate to RoPEWithFreqs.
* review comments
* mlx: fix ScaledDotProductAttentionMasked to consult the mask argument
Improve the MLX model creation pipeline with several model-agnostic changes:
- Rewrite supportsVision to use vision_config instead of architecture name
- Add supportsAudio for audio encoder detection
- Add alignment checking (isAligned) for quantization group sizes
- Support per-projection mixed quantization in MoE expert packing
- Record per-tensor quant metadata in safetensors blobs
- Parse per-tensor quant metadata at model load time
- Validate quantize output is non-empty before storing
- Fix pin/unpin cleanup in expert group quantization
- Promote v_proj/k_proj/down_proj to INT8 for INT4 base quant
- Add MetalIsAvailable() utility
- Skip audio encoder tensors from quantization
* gemma4: update renderer to match new jinja template
Google has updated their jinja template for gemma4, and so this change
gives us parity with the new template. The parsing also slightly changed
upstream, so we make a small change to our parser as well.
I've also corrected a few probably existing edge cases, especially
around type unions. The upstream output format is weird (a stringified
array), but in practice the models seem to understand it well.
* gemma4: special case simple `AnyOf`s
The upstream template doesn't handle `AnyOf`s, but since in the previous
commit we saw type unions work reasonably well, I'm now treating very
simple `AnyOf`s as type unions to help in cases where they might be used
* fix lint
* gemma4: prefer empty instead of `None`
We can't currently distinguish between a result being not-present vs.
empty. The empty case seems more important (e.g., a legitimately empty
tool call)
* gemma4: be more careful for tool results with missing IDs
We were missing setting the function index for several models that can
make parallel tool calls.
In the future we may want to consider putting some sort of post-parse
hook and relieve the parsers of this duty.
Fixes: #15457
Update cloud and local model recommendations to match current
models.go: add qwen3.5:cloud and glm-5.1:cloud, replace glm-4.7-flash
with gemma4 and qwen3.5 as local options.
Add documentation for Hermes Agent by Nous Research, covering
installation, Ollama setup via custom endpoint, messaging configuration,
and recommended models.
This change fixes two issues with Modelfiles:
1. If a user uses `ollama show --modelfile` to show a safetensors based
model, the Model would leave the "FROM" field blank which won't allow
a user to recreate the model. This change adds the model's current
canonical short name to the FROM field.
2. If a user uses the `/save` command in the CLI any messages which were
saved in a previous model wouldn't get saved (only the set of messages
from the current session).
The default branch in unmarshalResponsesInputItem had two issues:
- It referenced typeField.Type instead of itemType; these differ when the
shorthand role-based format promotes an empty type to "message", meaning
an unhandled type would show the wrong value in the error string.
- It used %s formatting, so an empty type field produced the unhelpful
message "unknown input item type: " with no indication what was missing.
Fix by using itemType (the resolved value) with %q quoting, and add a
dedicated message when itemType is empty (both type and role absent):
"input item missing required 'type' field".
Tests added for the empty-type and missing-type cases.
Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>
* pull: refine safetensors pull
- Body drain in resolve() — drain response body before close so Go's HTTP
client can reuse TCP connections instead of opening a new one per blob
(1,075 extra TCP+TLS handshakes eliminated)
- Skip speed recording for tiny blobs (<100KB) — prevents
HTTP-overhead-dominated transfer times from poisoning the median, which the
stall detector uses to cancel "too slow" downloads
- Resume support for large blobs (>=64MB) — on failure, preserves partial .tmp
files; on retry, re-hashes existing datak and sends Range header to download
only remaining bytes; gracefully falls back to full download if server returns
200 instead of 206; SHA256 verification catches corrupt partials
* harden push
- Prevents killing TCP connections after every request.
- Stronger backoff to handle server back-pressure and rate limiting
- Larger buffered reads for improve safetensor upload performance
- Better error message handling from server
- Handle 201 if server says blob exists
- Fix progress reporting on already uploaded blobs
- Trace logging to help troubleshoot and tune going forward
* review comments
* review comments
In addition to strings (which we already supported), OpenResponses
supports arrays of text content, image content, or file content (see
<https://www.openresponses.org/reference#object-FunctionCallOutput-title>).
We were missing support for these arrays, which caused unmarshal errors
like
```
json: cannot unmarshal array into Go struct field ResponsesFunctionCallOutput.output of type string
```
This change adds support for text content and image content, as those
are more straightforwardly mappable to Ollama message formats (though
image and text interleaving is lost), but it's less clear what to do for
files. In the future we can partially support this by inlining
reasonably sized text files, but wanted to get this change out first.
Fixes: #15250
* create: Clean up experimental paths
This cleans up the experimental features, and adds both unit and integration test coverage to verify no regressions.
* create: preserve config and layer names when creating from safetensors models
When creating a model FROM an existing safetensors model, ModelFormat,
Capabilities, and layer Name fields were lost. ModelFormat stayed empty
because it's only set from GGML layers (which safetensors models lack),
and layer names weren't copied in parseFromModel. This caused derived
models to fail loading ("config.json not found in manifest").
* review comments
* mlx: Improve M5 performance with NAX
This modifies the Mac release to now have 2 builds of MLX for broader
compatibility while supporting the latest M5 hardware features. NAX requires
building with xcode 26.2 and targetting support only for OS v26 and up. Since
we want to support older MacOS versions as well, we now need 2 different MLX
builds and runtime detection logic to select the optimal version. The newer
build will detect NAX missing at runtime, so it is safe to run on pre M5 macs.
* mac: prevent generate on cross-compiles
For some versions of Xcode, cmake builds are failing due to header problems in
cross-compiling during the generate phase. Since generate is producing arch
independent generated output, we can skip this during cross-compiling.
The existing strict gemma4 tool parser is still the primary path, but if
this fails, we try to repair by fixing some of the most commonly seen
mistakes these models seem to make in practice.
We repair by building up a set of candidates, and use the first candidate
that parses.
Repairs cover:
- missing Gemma string delimiters
- single-quoted string values, including a dangling Gemma delimiter
- raw terminal string values (if the corresponding tool schema indicates
it should be a string)
- missing object close only after a concrete repair
Add regression coverage for malformed tool calls from issue #15315 and
focused unit tests for the individual repair helpers and candidate
pipeline.
We've observed Gemma 4 occasionally emitting extra <tool_call|> tags
after a valid tool call. We suppress leading close tags in this
immediate post-tool-call state so the extra close tags do not leak into
assistant content. The tradeoff is that if the model intentionally
begins its next content span with the literal string "<tool_call|>", we
will erroneously treat it as noise and drop it.
