Loading...
Loading...
Side-by-side comparison of API pricing, context window, latency, and benchmark performance. Data refreshed daily from provider APIs and ModelStop's own latency probes.
💰xAI: Grok 4.20 is 100% cheaper than xAI: Grok 4.1 Fast
⚡xAI: Grok 4.1 Fast is 16ms faster than xAI: Grok 4.20
Price (lower is better), Speed/Latency (lower is better), Performance (higher is better)
| Spec | xAI: Grok 4.1 Fast | xAI: Grok 4.20 |
|---|---|---|
| Provider | x-ai | x-ai |
| Input price / 1M tokens | $0.20 | Free |
| Output price / 1M tokens | $0.50 | — |
| Context window | 2000k tokens | 2000k tokens |
| Latency (p50) | — | 16ms |
| Best benchmark score | — | — |
| Open source | No | No |
Grok 4.1 Fast is xAI's best agentic tool calling model that shines in real-world use cases like customer support and deep research. 2M context window. Reasoning can be enabled/disabled using...
Grok 4.20 is a reasoning model from xAI with industry-leading speed and agentic tool calling capabilities. It combines the lowest hallucination rate on the market with strict prompt adherance, delivering...
Want to swap in a different model or estimate monthly costs?
Help my team choose the right model
Not sure which model fits your workload, budget, and latency requirements? Get a tailored recommendation.