AI21: Jamba Large 1.7 vs xAI: Grok 4.20
Side-by-side comparison — pricing, context window, capabilities, and live leaderboard data.
Key differences
- xAI: Grok 4.20 has a 2000K-token context window — 7.8× larger than AI21: Jamba Large 1.7's 256K.
- xAI: Grok 4.20 is 38% cheaper per 1K input tokens than AI21: Jamba Large 1.7 ($0.0013 vs $0.0020).
- AI21: Jamba Large 1.7 is built by AI21; xAI: Grok 4.20 is built by xAI.
- xAI: Grok 4.20 supports vision (image inputs); the other does not.
Specifications
| AI21: Jamba Large 1.7 | xAI: Grok 4.20 | |
|---|---|---|
| Provider | AI21 | xAI |
| Context window | 256K | 2000K |
| Max output tokens | 8192 | 8192 |
| Input price / 1K tokens | $0.0020 | $0.0013 |
| Output price / 1K tokens | $0.0080 | $0.0025 |
| Vision support | No | Yes |
| Function calling | No | No |
| License | Proprietary | Proprietary |
About AI21: Jamba Large 1.7
Other·ClosedJamba 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...
View AI21: Jamba Large 1.7 reliability and benchmark history →About xAI: Grok 4.20
US·ClosedGrok 4.20 is a reasoning model from xAI with industry-leading speed and agentic tool calling capabilities. It combines the lowest hallucination rate on the market with strict prompt adherance, delivering...
View xAI: Grok 4.20 reliability and benchmark history →Try them yourself
Run the same prompt against AI21: Jamba Large 1.7 and xAI: Grok 4.20 side-by-side on PromptPit.
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