LLM Comparison
Gemma 4 31B vs Grok 4 Fast
Side-by-side specs, pricing & capabilities · Updated April 2026
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2/6 modelsSame tier:
| Organization | ||
| OpenTools Score | 73 | |
| Family | Gemma | Grok |
| Status | Current | Current |
| Release Date | Apr 2026 | Sep 2025 |
| Context Window | 262K tokens | 2.0M tokens |
| Input Price | — | $0.20/M tokens |
| Output Price | — | $0.50/M tokens |
| Pricing Notes | Free tier available on OpenRouter with rate limits | Cache read: $0.0500/M tokens |
| Capabilities | textvisionvideocode | textvisioncode |
| Max Output | 33K tokens | 30K tokens |
| API Identifier | google/gemma-4-31b-it:free | x-ai/grok-4-fast |
| View Gemma 4 31B | View Grok 4 Fast |
Gemma 4 31B
Gemma 4 31B is a multimodal llm from Google. Supports up to 262,144 token context window. Available free with rate limits on OpenRouter.
xAI
Grok 4 Fast
Grok 4 Fast is a multimodal llm from xAI. Supports up to 2,000,000 token context window. Available from $0.20/M input tokens.
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