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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 Multi-Agent is 100% cheaper than xAI: Grok 4 Fast
⚡xAI: Grok 4 Fast is 32ms faster than xAI: Grok 4.20 Multi-Agent
Price (lower is better), Speed/Latency (lower is better), Performance (higher is better)
| Spec | xAI: Grok 4 Fast | xAI: Grok 4.20 Multi-Agent |
|---|---|---|
| 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) | — | 32ms |
| Best benchmark score | — | — |
| Open source | No | No |
Grok 4 Fast is xAI's latest multimodal model with SOTA cost-efficiency and a 2M token context window. It comes in two flavors: non-reasoning and reasoning. Read more about the model...
Grok 4.20 Multi-Agent is a variant of xAI’s Grok 4.20 designed for collaborative, agent-based workflows. Multiple agents operate in parallel to conduct deep research, coordinate tool use, and synthesize information...
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