Quick Summary
OpenAI Codex
GPT models with broad capabilities and wide ecosystem support
- 128K context window
- Image generation and understanding
- Tool/function calling
Google Gemini
Multimodal AI with competitive pricing and speed
- 1M token context window
- Multimodal understanding
- Fast inference
Model Comparison
| Aspect | OpenAI Codex | Google Gemini |
|---|---|---|
| Number of Models | 2 | 2 |
| Default Model | GPT-5.2 | Gemini 2.0 Flash |
| Max Context Window | 128K tokens | 1000K 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
Google Gemini
api_key
Google AI API key
GOOGLE_API_KEY oauth
OAuth via Antigravity or Gemini CLI
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
Google Gemini
Pros
- Extremely large context window
- Very cost-effective
- Fast inference speeds
- Good multimodal capabilities
Cons
- Still experimental features
- Less mature ecosystem
- API can change frequently
Best Use Cases
Choose OpenAI Codex if you need:
- General AI assistance
- Image generation
- Code generation
- Content creation
Choose Google Gemini if you need:
- Long document processing
- Cost-sensitive applications
- High-volume inference
- Multimodal tasks
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 Google Gemini?
It depends on your use case. OpenAI Codex excels at general ai assistance, while Google Gemini is best for long document processing. Consider your specific needs for context length, pricing, and feature requirements.
Can I use both OpenAI Codex and Google Gemini with OpenClaw?
Yes! OpenClaw supports multiple providers simultaneously. You can configure OpenAI Codex as your primary and Google Gemini as a fallback, or use different providers for different agents.
Which has better pricing, OpenAI Codex or Google Gemini?
OpenAI Codex uses undefined pricing, while Google Gemini uses undefined. The best value depends on your usage volume and whether you need premium features.