Grok vs OpenRouter
A feature-by-feature comparison of Grok and OpenRouter across 7 capability categories.
Modalities — Tie
| Feature | Grok | OpenRouter |
|---|---|---|
Text Input | Yes. Core feature | Yes, requires free plan. Chat completions via /api/v1/chat/completions. |
Image Upload / Vision | Yes | Yes, requires plus plan. Homepage: text, images, videos, and audio through one interface. Vision depends on the routed model. |
Image Generation | Yes | Yes, requires plus plan. Unified interface includes image generation across providers. |
Voice Mode | No | No. Audio generation/transcription may exist via routed models. Not a conversational voice UI. |
Video Understanding | No | Partial. Video generation API is documented. Understanding uploaded video was not separately confirmed. |
Video Generation | No. Not a video generation product. | No. Not a video generation product. |
File Upload (PDF, DOCX) | No | Unknown. PDF/DOCX chat was not confirmed on the quickstart page. |
Code Execution | No | No. You implement tools via the Agent SDK. OpenRouter does not sandbox your Python. |
Audio Input | No | Partial. Audio is listed as a modality. Treat as routed-model support, not a first-party STT studio. |
Canvas / Artifact Editor | No | No. Chat/API console, not an artifacts canvas. |
Screen Sharing / Computer Use | No | No. No computer-use product. |
Memory & Context — OpenRouter Wins
| Feature | Grok | OpenRouter |
|---|---|---|
Persistent Memory | No | No. API is stateless aside from your credits/keys. No user memory layer. |
Large Context Window | Partial. Standard context | Yes, requires plus plan. Window is whatever the selected model publishes. Catalog is at openrouter.ai/models. |
Custom Instructions | No | Yes, requires free plan. System messages plus org data policies that restrict providers. |
Conversation History | Yes | Yes, requires free plan. The site is a chat UI over models. API history is your client’s job. |
Integrations — Grok Wins
| Feature | Grok | OpenRouter |
|---|---|---|
Web Search / Browsing | Yes. Real-time focus | Unknown. Some routed models search. A first-party search toggle was not on quickstart. |
Plugins / Extensions | No | Yes, requires free plan. Hosted MCP at mcp.openrouter.ai plus Agent SDK tools. |
API Access | Yes, requires pro plan | Yes, requires plus plan. OpenAI-compatible API. Credits, no seat subscription. Client SDKs and OpenAI SDK drop-in. |
Zapier Integration | Yes. Zapier lists Grok by xAI as an official app. Zaps can Ask Grok, categorize text, extract fields from text or images, and generate images from a prompt. | Unknown. No first-party Zapier app was checked. |
Custom GPTs / Bots | No | No. No GPT Store. Agent SDK is for your own agents. |
Real-time Collaboration | No | No. No multiplayer chat. |
Live Social Data Integration | Yes. Real-time X data | No. No live social firehose. |
Live Citation Mapping | No. Not a cited-search product. |
Developer — Grok Wins
| Feature | Grok | OpenRouter |
|---|---|---|
Function Calling | Yes. The xAI API supports function calling: you define custom tools and Grok returns tool-call requests for your app to execute, alongside built-in tools such as web search, X search, and code interpreter. | Yes, requires free plan. Agent SDK tool loops; chat completions can carry tools depending on the model. |
Streaming Responses | Yes. The xAI API streams Grok text output over Server-Sent Events. Set stream: true on chat completions; all text-capable Grok models support it, including grok-4.6. | Yes, requires free plan. Quickstart: the API supports streaming. |
Fine-Tuning | No | No. You consume providers. OpenRouter does not train your weights. |
Embeddings API | No | Yes, requires plus plan. Client SDK docs cover embeddings alongside streaming. |
Structured Output (JSON) | No | Unknown. JSON-schema guarantees depend on the routed model; not asserted here. |
Reasoning / Thinking Mode | Yes. Auto populated | Unknown. Overlapping columns disagreed (yes vs partial); left unverified rather than copying a no. |
Local Execution | No. Routes to cloud providers. Not a local runtime. | |
Open Weights | Partial. You can pick open models hosted by providers. OpenRouter is not a weight release. | |
Multi-Agent Orchestration | Yes. Four-agent backend | Partial. Agent SDK handles tool loops and state. Not a multi-agent swarm product. |
Platforms — Grok Wins
| Feature | Grok | OpenRouter |
|---|---|---|
Web App | Yes | Yes, requires free plan. openrouter.ai chat, models catalog, and credit dashboard. |
iOS App | Yes. Via X app | No. No iOS app is documented. |
Android App | Yes. Via X app | No. No Android app is documented. |
Desktop App | No | No. No desktop app is documented. |
Chrome Extension | No | No. No Chrome extension is documented. |
Privacy — Tie
| Feature | Grok | OpenRouter |
|---|---|---|
GDPR Compliant | Yes | Unknown. Needs a DPA read. Data policies exist but are not GDPR certification. |
Opt Out of Data Training | No | Partial. Custom data policies restrict which providers see prompts. Not a single training-opt-out toggle we read. |
Enterprise Privacy Mode | No | Yes, requires plus plan. Org accounts and fine-grained data policies for trusted providers. |
Workspaces — Tie
| Feature | Grok | OpenRouter |
|---|---|---|
Projects / Folders | No | Unknown. Org/app keys exist. Folder workspaces were not confirmed. |