Compatibility
OpenDocBot is a single add-in that runs in Word, Excel and PowerPoint. One add-in, all three apps, no separate installs.
Is your Office version supported?
| Platform | Support |
|---|---|
| Microsoft 365 (desktop) | ✅ Fully supported |
| Microsoft 365 (web) | ✅ Fully supported |
| Office 2016/2019/2021 (perpetual) | ❌ Not supported |
| LibreOffice / Google Docs | ❌ Not supported |
Required API sets (for IT administrators)
OpenDocBot declares the following API sets in its manifest. If you manage devices centrally, these are the minimums to plan for:
| API set | Min version | Used for |
|---|---|---|
SharedRuntime | 1.1 | Persistent taskpane runtime |
WordApi | 1.3 | Word tools |
ExcelApi | 1.1 | Excel tools |
PowerPointApi | 1.4 | PowerPoint tools (core) |
Advanced PowerPoint editing needs 1.8
Most PowerPoint features work with PowerPointApi 1.4, but advanced slide editing requires PowerPointApi 1.8. Current-channel Microsoft 365 has it. If an advanced editing tool fails, check your channel version.
AI Provider compatibility
OpenDocBot is modular and supports several AI providers. Under the hood there are three providers: OpenAI-compatible (used by OpenAI, Ollama, OpenRouter, OpenCode Zen and any Custom OpenAI-compatible endpoint), Anthropic (Claude), and Gemini (Google).
A preset is just a shortcut: a provider bound to a specific endpoint and configurations. Several presets share the same provider (for example, Ollama and OpenRouter both use the OpenAI-compatible provider). Because presets reuse providers, you can switch between them without changing anything else.
Not all features are available with every provider.
Feature matrix
| Feature | OpenAI | Anthropic | Gemini | Ollama | OpenRouter | OpenCode Zen |
|---|---|---|---|---|---|---|
| Reasoning | ✅ | ✅ | ✅ | ✅* | ✅* | ✅ |
| Reasoning effort | ✅ | ✅ | ✅ | ❌** | ⚠️** | ⚠️** |
| Token streaming | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ |
| Prompt caching | ✅ | ✅ | ✅ | ❌ | ✅ | ✅ |
| Cache TTL options | - | 5m / 1h | rebuild size | - | - | - |
Legacy /chat/completions toggle | ✅ | n/a | n/a | ✅ | ✅ | ✅ |
| Model list fetching | ✅ | ✅ | ✅ | ❌ | ✅ | ✅ |
* Reasoning availability depends on the underlying model; an endpoint only surfaces reasoning if the model emits it (e.g. reasoning_content for DeepSeek-style models).
** Reasoning effort depends on the model and endpoint. OpenAI/Anthropic/Gemini send it natively; Ollama ignores it, and OpenRouter/OpenCode Zen forward it to the routed model, which may or may not support it.
Notes
- The Ollama preset needs no API key, so the model name is typed manually. If Ollama rejects requests, toggle Use old /chat/completions endpoint in Advanced (some versions don't support
/responses). - The Gemini provider supports context caching with a configurable rebuild threshold (default 2000 tokens); the cache is deleted on taskpane close to stop idle-storage billing.
- The OpenRouter preset lets you filter the model list to show only
:freemodels, so you can use the add-in at no cost.
CORS and the proxy
The add-in runs in your browser (the Office taskpane is a webview), so it can only reach providers that allow browser-origin requests (CORS).
To connect to providers not supporting CORS (i.e. OpenCode Zen), a request proxying functionality was added. This functionality is only available on self-hosted instances (see Self-hosting). For this reason, the OpenCode Zen preset is only available on self-hosted instances.
| Provider | Hosted instance | Self-hosted |
|---|---|---|
| OpenAI | ✅ | ✅ |
| Anthropic | ✅ | ✅ |
| Gemini | ✅ | ✅ |
| Ollama | ✅ (any endpoint) | ✅ |
| OpenRouter | ✅ | ✅ |
| OpenCode Zen | ❌ | ✅ (via proxy) |
Request proxying can be turned ON/OFF via Settings => Connection => Advanced => Proxy API requests through this server .