Gemini 3 Flash Preview is a high speed, high value thinking model designed for agentic workflows, multi turn chat, and coding assistance. It delivers near Pro level reasoning and tool use performance with substantially lower latency than la…
Model details →Google: Gemini 3 Flash Preview vs xAI: Grok 4.20 Beta
Google: Gemini 3 Flash Preview wins on 2 of 6 axes — pricing and capability skew in its favour for most workloads.
Grok 4.20 Beta is xAI's newest flagship model with industry-leading speed and agentic tool calling capabilities. It combines the lowest hallucination rate on the market with strict prompt adherance, delivering consistently precise and truth…
Model details →Side-by-side comparison
| Capability | Google: Gemini 3 Flash Preview | xAI: Grok 4.20 Beta | Winner |
|---|---|---|---|
| Context window Maximum number of input tokens the model can attend to in a single request. | 1.0M | 2M | 🏆 xAI: Grok 4.20 Beta |
| Input price (per 1M) Cost per million input tokens billed by the provider. | $0.50 | $2.00 | 🏆 Google: Gemini 3 Flash Preview |
| Output price (per 1M) Cost per million output tokens billed by the provider. | $3.00 | $6.00 | 🏆 Google: Gemini 3 Flash Preview |
| Tool / function calling First-class support for emitting structured tool calls. | Yes | Yes | Tie |
| Vision input Accepts image inputs alongside text. | Yes | Yes | Tie |
| Reasoning mode Internal chain-of-thought / extended-thinking support. | Yes | Yes | Tie |
Frequently asked questions
Is Google: Gemini 3 Flash Preview better than xAI: Grok 4.20 Beta?
Google: Gemini 3 Flash Preview wins on 2 of 6 axes — pricing and capability skew in its favour for most workloads.
What's the price difference between Google: Gemini 3 Flash Preview and xAI: Grok 4.20 Beta?
Input: $0.50 vs $2.00 per 1M tokens. Output: $3.00 vs $6.00 per 1M tokens.
What context windows do Google: Gemini 3 Flash Preview and xAI: Grok 4.20 Beta support?
Google: Gemini 3 Flash Preview supports up to 1.0M tokens. xAI: Grok 4.20 Beta supports up to 2M tokens.
Do both Google: Gemini 3 Flash Preview and xAI: Grok 4.20 Beta support tool calling?
Google: Gemini 3 Flash Preview: yes. xAI: Grok 4.20 Beta: yes.