Gemini 3.1 Pro Preview is Google’s frontier reasoning model, delivering enhanced software engineering performance, improved agentic reliability, and more efficient token usage across complex workflows. Building on the multimodal foundation.…
Model details →Google: Gemini 3.1 Pro Preview vs SpaceXAI: Grok 4.3
SpaceXAI: Grok 4.3 wins on 2 of 6 axes — pricing and capability skew in its favour for most workloads.
Grok 4.3 is a reasoning model from SpaceXAI. It accepts text and image inputs with text output, and is suited for agentic workflows, instruction-following tasks, and applications requiring high factual...
Model details →Side-by-side comparison
| Capability | Google: Gemini 3.1 Pro Preview | SpaceXAI: Grok 4.3 | Winner |
|---|---|---|---|
| Context window Maximum number of input tokens the model can attend to in a single request. | 1.0M | 1M | 🏆 Google: Gemini 3.1 Pro Preview |
| Input price (per 1M) Cost per million input tokens billed by the provider. | $2.00 | $1.25 | 🏆 SpaceXAI: Grok 4.3 |
| Output price (per 1M) Cost per million output tokens billed by the provider. | $12.00 | $2.50 | 🏆 SpaceXAI: Grok 4.3 |
| 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 3.1 Pro Preview better than SpaceXAI: Grok 4.3?
SpaceXAI: Grok 4.3 wins on 2 of 6 axes — pricing and capability skew in its favour for most workloads.
What's the price difference between Google: Gemini 3.1 Pro Preview and SpaceXAI: Grok 4.3?
Input: $2.00 vs $1.25 per 1M tokens. Output: $12.00 vs $2.50 per 1M tokens.
What context windows do Google: Gemini 3.1 Pro Preview and SpaceXAI: Grok 4.3 support?
Google: Gemini 3.1 Pro Preview supports up to 1.0M tokens. SpaceXAI: Grok 4.3 supports up to 1M tokens.
Do both Google: Gemini 3.1 Pro Preview and SpaceXAI: Grok 4.3 support tool calling?
Google: Gemini 3.1 Pro Preview: yes. SpaceXAI: Grok 4.3: yes.
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