Jamba Large 1.7 is the latest model in the Jamba open family, offering improvements in grounding, instruction-following, and overall efficiency. Built on a hybrid SSM-Transformer architecture with a 256K context window, it delivers more acc…
Model details →AI21: Jamba Large 1.7 vs xAI: Grok 4.20 Beta
xAI: Grok 4.20 Beta wins on 4 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 | AI21: Jamba Large 1.7 | xAI: Grok 4.20 Beta | Winner |
|---|---|---|---|
| Context window Maximum number of input tokens the model can attend to in a single request. | 256K | 2M | 🏆 xAI: Grok 4.20 Beta |
| Input price (per 1M) Cost per million input tokens billed by the provider. | $2.00 | $2.00 | Tie |
| Output price (per 1M) Cost per million output tokens billed by the provider. | $8.00 | $6.00 | 🏆 xAI: Grok 4.20 Beta |
| Tool / function calling First-class support for emitting structured tool calls. | Yes | Yes | Tie |
| Vision input Accepts image inputs alongside text. | — | Yes | 🏆 xAI: Grok 4.20 Beta |
| Reasoning mode Internal chain-of-thought / extended-thinking support. | — | Yes | 🏆 xAI: Grok 4.20 Beta |
Frequently asked questions
Is AI21: Jamba Large 1.7 better than xAI: Grok 4.20 Beta?
xAI: Grok 4.20 Beta wins on 4 of 6 axes — pricing and capability skew in its favour for most workloads.
What's the price difference between AI21: Jamba Large 1.7 and xAI: Grok 4.20 Beta?
Input: $2.00 vs $2.00 per 1M tokens. Output: $8.00 vs $6.00 per 1M tokens.
What context windows do AI21: Jamba Large 1.7 and xAI: Grok 4.20 Beta support?
AI21: Jamba Large 1.7 supports up to 256K tokens. xAI: Grok 4.20 Beta supports up to 2M tokens.
Do both AI21: Jamba Large 1.7 and xAI: Grok 4.20 Beta support tool calling?
AI21: Jamba Large 1.7: yes. xAI: Grok 4.20 Beta: yes.