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Ollama Preview Build

Download the latest notarized macOS preview for Gemma 4, Apertus 1.5 Omni, GPT-OSS, and MLX media work, or build the source preview locally.

These preview builds target Apple Silicon Macs and exercise MLX-backed model runners before the changes are part of a regular Ollama release.

MLX preview updates are optional: the app can download signed previews, and you choose when to restart and install. Switching to official Ollama is a separate manual choice.

Ollama 0.40.2 MLX preview

Published October 9, 2026 · signed and notarized macOS DMG
Latest
File
Ollama-0.40.2-40-gdb2f93e-mlx-preview-v0.40.2.dmg
Size
202.5 MB
SHA-256
1bc3a91853ba2e9d54f1dd1ee3948d778f2d756ceeb24139cf128f369162f49f
Upstream
Ollama v0.40.2 @ b061384d90ff
Highlights
Official Ollama v0.40.2New since v0.40.1 preview: model listings select the preferred migrated model and hide downgrade guard tags, avoiding duplicate entries. Also includes Claude launch context and autocompaction fixes. Desktop options in this buildThe app remembers Chat or Apps as your home and whether the sidebar was open. Command-Q can hide the window while Ollama stays in the menu bar. It also includes a dedicated MLX-preview update check; switching to official Ollama remains a separate manual choice. Included MLX preview capabilitiesNative GPT-OSS runtime with validated thinking and tool calling; Apertus 1.0 text and Apertus 1.1 Mini runtimes (see the model caveats)
Gemma 4 and Apertus 1.5 Omni image/audio with MP3, WebP, cancellation, and bounded media processing
Responses namespace tools, custom apply_patch compatibility, sparse tokenizer allocation, and desktop audio attachments.

Known limitations: Codex command fidelity, ordered-image answers on Gemma E4B, and Apertus 1.5 transcription remain imperfect. High image-memory use on Apertus 1.5 is under investigation (issue #36); the duplicated Command-Q setting is tracked separately (issue #37). See the model caveats.
Download DMG

Ollama 0.40.1 MLX preview

Published October 9, 2026 · signed and notarized macOS DMG
Previous
File
Ollama-0.40.1-37-g3e04ee2-mlx-preview-v0.40.1.dmg
Size
202.5 MB
SHA-256
8c87286fba055421055d57100eda423ef73771c8f32069b16140ad245f735c49
Upstream
Ollama v0.40.1 @ cf2a313a2980
Highlights
v0.40.1 base with desktop preferences, GPT-OSS, Apertus, Gemma 4 media, and Responses tools. Official Ollama v0.40.1New since v0.34.4 preview: multimodal embeddings, updated MLX dependencies, lower model-lookup overhead, and fixes for GPU-idle latency. Desktop options in this buildThe app remembers Chat or Apps as your home and whether the sidebar was open. Command-Q can hide the window while Ollama stays in the menu bar. It also includes a dedicated MLX-preview update check; switching to official Ollama remains a separate manual choice. Included MLX preview capabilitiesNative GPT-OSS runtime with validated thinking and tool calling; Apertus 1.0 text and Apertus 1.1 Mini runtimes (see the model caveats)
Gemma 4 and Apertus 1.5 Omni image/audio with MP3, WebP, cancellation, and bounded media processing
Responses namespace tools, custom apply_patch compatibility, sparse tokenizer allocation, and desktop audio attachments.

Known limitations: Codex command fidelity, ordered-image answers on Gemma E4B, and fresh Apertus 1.5 transcription remain imperfect; see the model caveats.
Download DMG

Ollama 0.34.4 MLX preview

Published September 27, 2026 · signed and notarized macOS DMG
Previous
File
Ollama-0.34.4-34-g090822a-mlx-preview-v0.34.4.dmg
Size
193.7 MB
SHA-256
92cb4bcf2ef7bb808b5025ed2d2beb1514141ceda6f49124a9793ada6ce8d028
Upstream
Ollama v0.34.4 @ b2da9e468af2
Highlights
v0.34.4 base with desktop preferences, GPT-OSS, Apertus, Gemma 4 media, and Responses tools. Official Ollama v0.34.4New since v0.34.1 preview: first-run CLI setup, thinking controls, faster structured outputs, Apple Silicon model improvements, and reliability fixes. Desktop options in this buildThe app remembers Chat or Apps as your home and whether the sidebar was open. Command-Q can hide the window while Ollama stays in the menu bar. It also includes a dedicated MLX-preview update check; switching to official Ollama remains a separate manual choice. Included MLX preview capabilitiesNative GPT-OSS runtime with validated thinking and tool calling; Apertus 1.0 text and Apertus 1.1 Mini runtimes (see the model caveats)
Gemma 4 and Apertus 1.5 Omni image/audio with MP3, WebP, cancellation, and bounded media processing
Responses namespace tools, custom apply_patch compatibility, sparse tokenizer allocation, and desktop audio attachments.
Download DMG

Older Preview Builds

Archived preview releases since May 1, 2026, starting with Ollama 0.22.1
Open Archive

To verify a download, run shasum -a 256 <downloaded-file.dmg> and compare it with the SHA-256 value shown above.

AI assistance disclosure: this page's release notes and explanatory copy were edited with AI assistance and reviewed before publication.