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Jamba 1.5-Large

AI21 LabsOpen weights

Jamba 1.5-Large by AI21 Labs costs — per 1M input tokens and — per 1M output tokens, with a —-token context window.

Pricing

Input (per 1M tokens)
—
Output (per 1M tokens)
—
Cached input (per 1M)
—

Specifications

Provider
AI21 Labs
Context window
—
Parameters
398B
Released
Aug 2024
Open weights
Yes
Frontier model
No

Benchmarks

LMArena (Chatbot Arena) Elo
1237.0

Compare Jamba 1.5-Large with…

Jamba 1.5-Large vs DeepSeek V3.1 Terminus$1.00/1MJamba 1.5-Large vs Qwen2.5 Coder 32B Instruct$1.00/1MJamba 1.5-Large vs Nemotron 3 Super 120B A12B$1.00/1MJamba 1.5-Large vs MiniMax M2$1.02/1MJamba 1.5-Large vs MiniMax M2.5$0.95/1MJamba 1.5-Large vs DeepSeek V3.1$0.95/1M

FAQ

How much does Jamba 1.5-Large cost?

Jamba 1.5-Large is priced at — per 1M input tokens and — per 1M output tokens. Output tokens cost more than input.

What is Jamba 1.5-Large's context window?

Jamba 1.5-Large supports a context window of — tokens — the maximum prompt plus response length it can handle in a single request.

Is Jamba 1.5-Large open weight?

Yes — Jamba 1.5-Large has openly available weights.

Data as of 2026-10-15. Source: Epoch AI, Data on AI Models (CC BY 4.0), epoch.ai. Pricing is per 1M tokens (USD); confirm with the provider before production use.