v0.1.1

This is a minor release that mainly fixes a bug where changing API keys either via UI or appsettings.Local.json would not get picked until Excel was restarted.

What's Changed

• docs: Add CLA by @kaspermarstal in #102
• docs: Fix README typos by @kaspermarstal in #103
• build: Add global.json to specify .NET SDK version 9.X.X by @johnnyoshika in #101
• fix: Changing API keys while app is running by @kaspermarstal in #109

Full Changelog: v0.1.0...v0.1.1

v0.1.0

Release v0.1.0

Cellm is an Excel extension that lets you use Large Language Models (LLMs) like ChatGPT in cell formulas. It is designed for automation of repetitive text-based tasks and comes with

• Local and hosted models: Defaults to free local inference (Gemma 2 2B via Ollama) while supporting commercial APIs
• Formula-driven workflow: =PROMPT() and =PROMPTWITH() functions for drag-and-fill operations across cell ranges.

Install

1. Download Cellm-AddIn64-packed.xll and appsettings.json. Put them in the same folder.

2. Double-click on Cellm-AddIn64-packed.xll. Excel will open and install Cellm.

3. Download and install Ollama. Cellm uses Ollama and the Gemma 2 2B model by default. Gemma 2 2B will be downloaded automatically the first time you call =PROMPT(). To call other models, see the Models section in the README.

Uninstall

1. In Excel, go to File > Options > Add-Ins.
2. In the Manage drop-down menu, select Excel Add-ins and click Go....
3. Uncheck Cellm-AddIn64-packed.xll and click OK.

Known Limitations

1. Windows-only: No macOS/Linux support planned for initial versions
2. Input constraints:
   • Formula arguments limited to 8,192 characters (Excel string limit)
   • No native support for multi-turn conversations
3. Model variability: Output quality depends on selected LLM (validate critically)

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Contribution & Feedback

Report issues or suggest improvements via GitHub Issues.

Install

Download Cellm-AddIn64-packed.xll and appsettings.json and put it in the same folder. Then double-click on Cellm-AddIn64-packed.xll. Excel will open with Cellm installed.

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License: Fair Core License
Full Documentation: README

What's Changed

• feat: Add LlamafileClient by @kaspermarstal in #1
• bug: Fix AddSystemMessage by @kaspermarstal in #4
• bug: Fix llamafile health uri by @kaspermarstal in #3
• models: Add qwen-0.5b by @kaspermarstal in #2
• docs: Tighten up README by @kaspermarstal in #6
• feat: Manually dispose of ServiceLocator by @kaspermarstal in #7
• bug: By default assign telemetry to default model of provider, not default model of Cellm; refactor: Rename GoogleClient to GoogleAiClient by @kaspermarstal in #8
• docs: Add support for Mistral by @kaspermarstal in #9
• bug: Disable sentry by default until fix for missing immutable arrays is identified by @kaspermarstal in #11
• feat: Add concurrency rate limiting by @kaspermarstal in #10
• feat: Add support for running multiple Llamafiles simultaneously by @kaspermarstal in #12
• build: Enforce code style in build by @kaspermarstal in #13
• git: Add Excel files to .gitignore by @kaspermarstal in #14
• docs: Improve README by @kaspermarstal in #15
• Prompt: Further optimize system prompt for small models with limited instruction-following capability. Larger models will understand anyway by @kaspermarstal in #16
• docs: Proof-read README.md by @kaspermarstal in #17
• feat: Add support for OpenAI tools by @kaspermarstal in #18
• feat: Upgrade default Anthropic model to claude-3-5-sonnet-20241022 by @kaspermarstal in #20
• refactor: Add provider enum by @kaspermarstal in #19
• refactor: Rename CellmFunctions to Functions and CellPrompts to SystemMessages by @kaspermarstal in #21
• ci: Add conventional commits lint by @kaspermarstal in #22
• build: Make internals visible to Cellm.Tests by @kaspermarstal in #23
• refactor: Pull out XllPath into settable property by @kaspermarstal in #24
• feat: Add SentryBehavior and CachingBehavior to model request pipeline by @kaspermarstal in #25
• refactor: Splot Tools into ToolRunner and ToolFactory by @kaspermarstal in #26
• feat: Upgrade Claude 3.5 Sonnet by @kaspermarstal in #27
• refactor: Remove superfluous interfaces by @kaspermarstal in #28
• feat: Add FileReader tool by @kaspermarstal in #29
• ci: Add dependabot by @kaspermarstal in #36
• build(deps): bump Microsoft.Extensions.Caching.Memory from 8.0.0 to 8.0.1 in /src/Cellm by @dependabot in #38
• ci: Disable commitlint for dependabot by @kaspermarstal in #43
• build(deps): bump Sentry.Extensions.Logging from 4.10.2 to 4.12.1 by @dependabot in #39
• ci: Disable conventional commits lint by @kaspermarstal in #44
• build(deps): bump Sentry.Profiling from 4.10.2 to 4.12.1 by @dependabot in #41
• build(deps): bump Microsoft.Extensions.Configuration.Json from 8.0.0 to 8.0.1 by @dependabot in #42
• fix: Parse tool description attributes by @kaspermarstal in #45
• feat: Add support for prompt as single string argument by @kaspermarstal in #50
• fix: CacheBehavior caches value even when model request is mutated downstream by @kaspermarstal in #56
• ci: Run dotnet format with restore by @kaspermarstal in #58
• fix: Remove Sentry metrics which were deprecated by @kaspermarstal in #59
• build(deps): bump Microsoft.Extensions.Configuration, Microsoft.Extensions.DependencyInjection, Microsoft.Extensions.Logging.Console, Microsoft.Extensions.Options and Microsoft.Extensions.Options.ConfigurationExtensions by @dependabot in #51
• fix: Increase timeouts for local LLMs by @kaspermarstal in #57
• build(deps): bump Microsoft.Extensions.Caching.Memory and Microsoft.Extensions.Options by @dependabot in #54
• build: Target .NET 8.0 by @kaspermarstal in #62
• feat: Replace GoogleAI provider with Google's OpenAI compatible endpoint by @kaspermarstal in #63
• feat: Update Llamafile version, add larger Llamafile models by @kaspermarstal in #64
• refactor: Clean up src/Cellm/AddIn by @kaspermarstal in #65
• feat: Use Microsoft.Extensions.AI by @kaspermarstal in #66
• feat: Add Ollama provider by @kaspermarstal in #67
• fix: Ollama provider by @kaspermarstal in #69
• build: Remove json schema deps no longer needed by @kaspermarstal in #72
• feat: Add HybridCache, remove MemoryCache by @kaspermarstal in #73
• feat: Add OpenAiCompatible chat client by @kaspermarstal in #74
• refactor: Models by @kaspermarstal in #75
• build: Target .NET 9 and update deps by @kaspermarstal in #83
• refactor: Use ExcelAsyncUtil to run task by @kaspermarstal in #84
• feat: Remove support for embedded Ollama and Llamafile servers by @kaspermarstal in #85
• build: Copy appsettings.Local.json to bin dir only if exists by @kaspermarstal in #86
• docs: Fix appsettings.Local.*.json examples and update readme to match by @kaspermarstal in #87
• bug: Fix OpenAiCompatible API key by @kaspermarstal in #94
• feat: Add Mistral and DeepSeek providers by @kaspermarstal in #95
• feat: Add Ribbon UI by @kaspermarstal in #96
• feat: Auto-download Ollama models by @kaspermarstal in #98
• docs: Update README.md with installations instructions via Release page by @kaspermarstal in #100

Full Changelog: https://github.com/getcellm/cellm/commits/v0.1.0