Grok 3vsGrok-2 Mini
xAI vs xAI — Side-by-side model comparison
Head-to-Head Comparison
| Metric | Grok 3 | Grok-2 Mini |
|---|---|---|
| Provider | ||
| Arena Rank | #5 | #16 |
| Context Window | 128K | 128K |
| Input Pricing | $3.00/1M tokens | $0.30/1M tokens |
| Output Pricing | $15.00/1M tokens | $1.50/1M tokens |
| Parameters | Undisclosed | Undisclosed |
| Open Source | No | No |
| Best For | Real-time info, reasoning, math | Fast responses, chat, lightweight tasks |
| Release Date | — | Aug 13, 2024 |
Grok 3
Grok 3 is xAI's frontier AI model, trained on one of the world's largest GPU clusters (100,000 Nvidia H100s). It features real-time access to X (Twitter) data, giving it uniquely current information about world events, public sentiment, and trending topics. The model excels at coding, reasoning, and factual tasks while offering a distinctive personality that includes humor and directness. With strong performance on arena benchmarks, Grok 3 competes directly with GPT-4o and Claude Sonnet. Its differentiator is the real-time information access and willingness to engage with topics that other models may decline. Available through the xAI API and the Grok chatbot on X, it has quickly become one of the most capable models in the market.
View xAI profile →Grok-2 Mini
Grok-2 Mini, developed by xAI, is a compact and fast variant of Grok-2 with a 128K token context window. The model maintains Grok's real-time X (Twitter) data access and distinctive conversational style while delivering faster response times at reduced cost. It handles chat, content generation, and lightweight reasoning tasks effectively. Priced at $0.30 per million input tokens and $1.50 per million output tokens, Grok-2 Mini targets high-volume applications where current information and fast responses outweigh maximum analytical depth. The model supports function calling and structured outputs for production integrations. Grok-2 Mini ranks #16 on the Chatbot Arena leaderboard, demonstrating competitive performance for a compact model and providing a cost-effective entry point to xAI's model ecosystem.
View xAI profile →Key Differences: Grok 3 vs Grok-2 Mini
Grok 3 ranks higher in arena benchmarks (#5) indicating stronger overall performance.
Grok-2 Mini is 10.0x cheaper on average, making it the better choice for high-volume applications.
When to use Grok 3
- +You need the highest quality output based on arena rankings
- +Quality matters more than cost
- +Your use case involves real-time info, reasoning, math
When to use Grok-2 Mini
- +Budget is a concern and you need cost efficiency
- +Your use case involves fast responses, chat, lightweight tasks
Cost Analysis
At current pricing, Grok-2 Mini is 10.0x more affordable than Grok 3. For a typical enterprise workload processing 100M tokens per month:
Grok 3 monthly cost
$900
100M tokens/mo (50/50 in/out)
Grok-2 Mini monthly cost
$90
100M tokens/mo (50/50 in/out)
The Verdict
Grok-2 Mini wins our head-to-head comparison with 2 out of 5 category wins. It's the stronger choice for fast responses, chat, lightweight tasks, though Grok 3 holds an edge in real-time info, reasoning, math.
Last compared: April 2026 · Data sourced from public benchmarks and official pricing pages