IBM Granite 4.2 3B vs o3-mini
o3-mini leads the LLM Stats Score 21.6 to 15.6.
IBM · OpenAI · Updated for 2026
Which is better?
o3-mini leads the overall LLM Stats Score 21.6 to 15.6, ranking #173 overall.
In the 1 individual benchmarks reported for both models, o3-mini wins 1; 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 3B
- you want the most recent training data — it shipped Aug 2026
- you need open weights you can self-host or fine-tune
Choose o3-mini
- overall performance matters — it scores 21.6 and ranks #173 on LLM Stats
- your work emphasizes reasoning — it leads those capability indexes
- you value its reported benchmark strengths — it wins 1 of 1 exact shared results
At a glance
The differences that matter most.
Capability indexes
Additional strengths measured across groups of related public benchmarks
Individual benchmarks
13 reported for IBM Granite 4.2 3B · 25 for o3-mini
IBM Granite 4.2 3B outperforms in 0 benchmarks, while o3-mini is better at 1 benchmark (GPQA).
o3-mini significantly outperforms across most benchmarks.
Human preference
Blind head-to-head votes and playground preference scores
Context Window
Maximum input and output token capacity
Only o3-mini specifies input context (200,000 tokens). Only o3-mini specifies output context (100,000 tokens).
License
Usage and distribution terms
IBM Granite 4.2 3B is licensed under Apache 2.0, while o3-mini uses a proprietary license.
License differences may affect how you can use these models in commercial or open-source projects.
Apache 2.0
Open weights
Proprietary
Closed source
Release Timeline
When each model was launched
IBM Granite 4.2 3B was released on 2026-08-25, while o3-mini was released on 2025-01-30.
IBM Granite 4.2 3B is 19 months newer than o3-mini.
Aug 25, 2026
6 days ago
1.6yr newerJan 30, 2025
1.6 years ago
Knowledge Cutoff
When training data ends
o3-mini has a documented knowledge cutoff of 2023-09-30, while IBM Granite 4.2 3B's cutoff date is not specified.
We can confirm o3-mini's training data extends to 2023-09-30, but cannot make a direct comparison without IBM Granite 4.2 3B's cutoff date.
—
Sep 2023
Outputs Comparison
Judge for yourself.
Run your own prompts against IBM Granite 4.2 3B and o3-mini side-by-side, then vote on the output you prefer.
FAQ
Common questions about IBM Granite 4.2 3B vs o3-mini.