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...
Model details →AI21: Jamba Large 1.7 vs OpenAI: GPT-5.6 Luna
OpenAI: GPT-5.6 Luna wins on 5 of 6 axes — pricing and capability skew in its favour for most workloads.
GPT-5.6 Luna is a fast, cost-efficient model in OpenAI's GPT-5.6 series. It is suited for high-volume, latency-sensitive tasks such as chat, classification, and lightweight agentic workflows, providing capable reasoning for...
Model details →Side-by-side comparison
| Capability | AI21: Jamba Large 1.7 | OpenAI: GPT-5.6 Luna | Winner |
|---|---|---|---|
| Context window Maximum number of input tokens the model can attend to in a single request. | 256K | 1.1M | 🏆 OpenAI: GPT-5.6 Luna |
| Input price (per 1M) Cost per million input tokens billed by the provider. | $2.00 | $0.10 | 🏆 OpenAI: GPT-5.6 Luna |
| Output price (per 1M) Cost per million output tokens billed by the provider. | $8.00 | $0.60 | 🏆 OpenAI: GPT-5.6 Luna |
| Tool / function calling First-class support for emitting structured tool calls. | Yes | Yes | Tie |
| Vision input Accepts image inputs alongside text. | — | Yes | 🏆 OpenAI: GPT-5.6 Luna |
| Reasoning mode Internal chain-of-thought / extended-thinking support. | — | Yes | 🏆 OpenAI: GPT-5.6 Luna |
Frequently asked questions
Is AI21: Jamba Large 1.7 better than OpenAI: GPT-5.6 Luna?
OpenAI: GPT-5.6 Luna wins on 5 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 OpenAI: GPT-5.6 Luna?
Input: $2.00 vs $0.10 per 1M tokens. Output: $8.00 vs $0.60 per 1M tokens.
What context windows do AI21: Jamba Large 1.7 and OpenAI: GPT-5.6 Luna support?
AI21: Jamba Large 1.7 supports up to 256K tokens. OpenAI: GPT-5.6 Luna supports up to 1.1M tokens.
Do both AI21: Jamba Large 1.7 and OpenAI: GPT-5.6 Luna support tool calling?
AI21: Jamba Large 1.7: yes. OpenAI: GPT-5.6 Luna: yes.