Quick Summary
OpenAI Codex
GPT models with broad capabilities and wide ecosystem support
- 128K context window
- Image generation and understanding
- Tool/function calling
OpenRouter
Unified API gateway to multiple AI providers
- Access to 100+ models
- Unified billing
- Model comparison
Model Comparison
| Aspect | OpenAI Codex | OpenRouter |
|---|---|---|
| Number of Models | 2 | 2 |
| Default Model | GPT-5.2 | Claude Sonnet 4 (via OpenRouter) |
| Max Context Window | 128K tokens | 200K tokens |
| Image Support | ✓ Yes | ✓ Yes |
| Tool/Function Calling | ✓ Yes | ✓ Yes |
| Pricing Model |
Authentication
OpenAI Codex
api_key
Standard API key authentication
OPENAI_API_KEY oauth
OAuth for ChatGPT/Codex subscriptions
OpenRouter
api_key
OpenRouter API key
OPENROUTER_API_KEY Pros & Cons
OpenAI Codex
Pros
- Extensive ecosystem and tooling
- Good performance across tasks
- Fine-tuning options
- Strong developer community
Cons
- Can be expensive at scale
- Rate limits vary by tier
- Model updates can change behavior
OpenRouter
Pros
- Single API for multiple providers
- Easy model switching
- Unified billing
- Good for experimentation
Cons
- Additional latency
- Markup on base prices
- Dependent on third party
Best Use Cases
Choose OpenAI Codex if you need:
- General AI assistance
- Image generation
- Code generation
- Content creation
Choose OpenRouter if you need:
- Model comparison
- Fallback strategies
- Multi-provider setups
- Experimentation
Use with Messaging Channels
Both providers work with all OpenClaw messaging channels:
Telegram
Discord
Slack
Signal
iMessage
Frequently Asked Questions
Which is better, OpenAI Codex or OpenRouter?
It depends on your use case. OpenAI Codex excels at general ai assistance, while OpenRouter is best for model comparison. Consider your specific needs for context length, pricing, and feature requirements.
Can I use both OpenAI Codex and OpenRouter with OpenClaw?
Yes! OpenClaw supports multiple providers simultaneously. You can configure OpenAI Codex as your primary and OpenRouter as a fallback, or use different providers for different agents.
Which has better pricing, OpenAI Codex or OpenRouter?
OpenAI Codex uses undefined pricing, while OpenRouter uses undefined. The best value depends on your usage volume and whether you need premium features.