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AI21VerifiedOpen Weights2 benchmarks

Jamba 2 Large

Released 2025-03-01399B (Hybrid SSM/Transformer) Architecture

Training: 2024-03

Latest Data

Unknown

Context Window

256k

tokens

Input Cost

$2.00

per 1M tokens

Output Cost

$8.00

per 1M tokens

Parameters

399B (Hybrid SSM/Transformer)

model footprint

Benchmark Provenance

Performance Analysis // Verified Benchmarks

86.5/ 100

Verified

Last Verified: Unknown DateAI21

Massive Multitask Language Understanding covers 57 subjects across STEM, the humanities, social sciences, and more.

90/ 100

Verified

Last Verified: Unknown DateAI21

Grade school math word problems requiring multi-step reasoning.