---
title: "OpenRouter: Unified Access to 100+ LLMs from Claude, GPT-4, Llama, and More in Pixeltable"
date: "2025-11-05"
author: "Pixeltable Team"
tags:
  - OpenRouter
  - Multi-Provider
  - Claude
  - GPT-4
  - Llama
  - AI Integration
  - Pixeltable
description: "Access the entire LLM ecosystem through a single API with OpenRouter. Learn how to use Claude, GPT-4, Llama, Mistral, and 100+ other models with Pixeltable for flexible, cost-optimized AI applications."
url: "https://pixeltable.com/blog/openrouter-multi-provider-pixeltable"
---

# OpenRouter: Unified Access to 100+ LLMs from Claude, GPT-4, Llama, and More in Pixeltable

OpenRouter provides unified access to 100+ models from every major provider through a single API. Combined with Pixeltable, you can build flexible AI applications that leverage the best model for each task.

 
## OpenRouter: The Universal LLM Gateway

 
**OpenRouter** is a unified API that gives you access to models from OpenAI, Anthropic, Meta, Mistral, Google, and dozens of other providers. Instead of managing multiple API keys and SDKs, you use one interface.

 
 
When combined with Pixeltable's [declarative infrastructure](/blog/unified-multimodal-ai-infrastructure-pixeltable), you get maximum flexibility with enterprise-grade orchestration.

 
## Why OpenRouter?

 

 - **100+ Models:** Access every major LLM through one API

 - **Single API Key:** No need to manage multiple accounts

 - **Fallback Routing:** Automatic failover to backup providers

 - **Competitive Pricing:** Often cheaper than direct access

 

 
## Getting Started

 
```bash
# Install required packages
pip install pixeltable openai

# Set your OpenRouter API key
export OPENROUTER_API_KEY="your-api-key-here"
```

 
## Basic Usage

 
```python
import pixeltable as pxt
from pixeltable.functions import openrouter

pxt.drop_dir('openrouter_demo', force=True)
pxt.create_dir('openrouter_demo')

t = pxt.create_table('openrouter_demo.chat', {'input': pxt.String})

messages = [{'role': 'user', 'content': t.input}]
t.add_computed_column(output=openrouter.chat_completions(
 messages=messages,
 model='anthropic/claude-sonnet-4',
 model_kwargs={'max_tokens': 300}
))

t.add_computed_column(response=t.output.choices[0].message.content)

t.insert([{'input': 'How many species of felids exist?'}])
t.select(t.input, t.response).show()
```

 
## Comparing Models Across Providers

 
```python
import pixeltable as pxt
from pixeltable.functions import openrouter

compare = pxt.create_table('openrouter_demo.compare', {'prompt': pxt.String})

messages = [{'role': 'user', 'content': compare.prompt}]

# Compare Claude, GPT-4, and Llama
compare.add_computed_column(
 claude=openrouter.chat_completions(
 messages=messages,
 model='anthropic/claude-sonnet-4'
 ).choices[0].message.content
)

compare.add_computed_column(
 gpt4=openrouter.chat_completions(
 messages=messages,
 model='openai/gpt-4o-mini'
 ).choices[0].message.content
)

compare.add_computed_column(
 llama=openrouter.chat_completions(
 messages=messages,
 model='meta-llama/llama-3.3-70b-instruct'
 ).choices[0].message.content
)

compare.insert([{'prompt': 'Explain quantum entanglement briefly.'}])
compare.show()
```

 
## Popular Models via OpenRouter

 
| Provider | Model | OpenRouter ID |
| --- | --- | --- |
| Anthropic | Claude 3.5 Sonnet | anthropic/claude-sonnet-4 |
| OpenAI | GPT-4o | openai/gpt-4o |
| Meta | Llama 3.3 70B | meta-llama/llama-3.3-70b-instruct |
| Mistral | Mistral Small | mistralai/mistral-small |
| Google | Gemini Pro | google/gemini-pro |

 
## OpenRouter vs Direct APIs

 
| Consideration | OpenRouter | Direct APIs |
| --- | --- | --- |
| API Keys | One key for all | Multiple accounts |
| Model Switching | Change one parameter | Different SDKs |
| Fallback Routing | Built-in | Build yourself |

 
## Next Steps

 

 - [Compare Providers](/blog/multi-provider-ai-strategy-comparison-guide)

 - [Production RAG Guide](/blog/production-rag-data-centric)

 - [All Integrations](https://docs.pixeltable.com/integrations/frameworks)

 

 
## Resources

 

 - [Pixeltable OpenRouter Documentation](https://docs.pixeltable.com/howto/providers/working-with-openrouter)

 - [OpenRouter Documentation](https://openrouter.ai/docs)

 - [Join our Discord Community](https://discord.com/invite/QPyqFYx2UN)