Back to models
Grok 4.20 vs GPT-5.5
Grok 4.20 and GPT-5.5: current price, context, max output, and supported operations.
Pricing comparison
| Grok 4.20 | GPT-5.5 | |
|---|---|---|
| Model maker | xAI | OpenAI |
| Delivery availability | Available | Available |
| Context window | 1M | 1M |
| Max output | 128K | 128K |
| Official price | Input$1.25per 1M tokensOutput$2.50per 1M tokens | Input$5.00per 1M tokensOutput$30.00per 1M tokens |
| TokenLab price | Input$0.625per 1M tokensOutput$1.25per 1M tokens | Input$1.50per 1M tokensOutput$9.00per 1M tokens |
| Model performance | Collecting data |
|
| Capabilities | JSON modePrompt CacheReasoningTool useVision | CodeJSON modePrompt CacheReasoningTool useVision |
Summary
- Grok 4.20: Input $0.625 / Output $1.25 per 1M tokens; GPT-5.5: Input $1.50 / Output $9.00 per 1M tokens. Rates depend on the billing unit, specification, and usage. Compare matching conditions in the model's detailed pricing; a single rate does not determine the total cost.
FAQ
Which is cheaper, Grok 4.20 or GPT-5.5?
Grok 4.20: Input $0.625 / Output $1.25 per 1M tokens; GPT-5.5: Input $1.50 / Output $9.00 per 1M tokens. Rates depend on the billing unit, specification, and usage. Compare matching conditions in the model's detailed pricing; a single rate does not determine the total cost.
What are the key differences between Grok 4.20 and GPT-5.5?
GPT-5.5: Code