IBM Granite 4.2 30B vs Jamba 1.5 Large
IBM Granite 4.2 30B leads the LLM Stats Score 24.0 to 1.2.
IBM · AI21 Labs · Updated for 2026
Which is better?
IBM Granite 4.2 30B leads the overall LLM Stats Score 24.0 to 1.2, ranking #156 overall.
In the 2 individual benchmarks reported for both models, IBM Granite 4.2 30B wins 2; this is a narrower head-to-head signal than the composite indexes.
Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.
Choose IBM Granite 4.2 30B
- overall performance matters — it scores 24.0 and ranks #156 on LLM Stats
- your work emphasizes reasoning — it leads those capability indexes
- you value its reported benchmark strengths — it wins 2 of 2 exact shared results
- you want the most recent training data — it shipped Aug 2026
Choose Jamba 1.5 Large
- you want predictable pricing at $2.00/M input and $8.00/M output
At a glance
The differences that matter most.
Capability indexes
Additional strengths measured across groups of related public benchmarks
Individual benchmarks
18 reported for IBM Granite 4.2 30B · 8 for Jamba 1.5 Large
IBM Granite 4.2 30B outperforms in 2 benchmarks (GPQA, MMLU-Pro), while Jamba 1.5 Large is better at 0 benchmarks.
IBM Granite 4.2 30B significantly outperforms across most benchmarks.
Human preference
Blind head-to-head votes and playground preference scores
Model Size
Parameter count comparison
Jamba 1.5 Large has 368.0B more parameters than IBM Granite 4.2 30B, making it 1226.7% larger.
Context Window
Maximum input and output token capacity
Only Jamba 1.5 Large specifies input context (256,000 tokens). Only Jamba 1.5 Large specifies output context (256,000 tokens).
License
Usage and distribution terms
IBM Granite 4.2 30B is licensed under Apache 2.0, while Jamba 1.5 Large uses Jamba Open Model License.
License differences may affect how you can use these models in commercial or open-source projects.
Apache 2.0
Open weights
Jamba Open Model License
Open weights
Release Timeline
When each model was launched
IBM Granite 4.2 30B was released on 2026-08-25, while Jamba 1.5 Large was released on 2024-08-22.
IBM Granite 4.2 30B is 24 months newer than Jamba 1.5 Large.
Aug 25, 2026
6 days ago
2.0yr newerAug 22, 2024
2.0 years ago
Knowledge Cutoff
When training data ends
Jamba 1.5 Large has a documented knowledge cutoff of 2024-03-05, while IBM Granite 4.2 30B's cutoff date is not specified.
We can confirm Jamba 1.5 Large's training data extends to 2024-03-05, but cannot make a direct comparison without IBM Granite 4.2 30B's cutoff date.
—
Mar 2024
Outputs Comparison
Judge for yourself.
Run your own prompts against IBM Granite 4.2 30B and Jamba 1.5 Large side-by-side, then vote on the output you prefer.
FAQ
Common questions about IBM Granite 4.2 30B vs Jamba 1.5 Large.