GPT-5 Medium vs IBM Granite 4.2 30B
GPT-5 Medium leads the LLM Stats Score 30.2 to 24.0.
OpenAI · IBM · Updated for 2026
Which is better?
GPT-5 Medium leads the overall LLM Stats Score 30.2 to 24.0, ranking #109 overall.
The models split the 2 individual benchmarks reported for both models evenly.
Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.
Choose GPT-5 Medium
- overall performance matters — it scores 30.2 and ranks #109 on LLM Stats
- your work emphasizes reasoning — it leads those capability indexes
Choose IBM Granite 4.2 30B
- you want the most recent training data — it shipped Aug 2026
- you need open weights you can self-host or fine-tune
At a glance
The differences that matter most.
Individual benchmarks
2 reported for GPT-5 Medium · 18 for IBM Granite 4.2 30B
GPT-5 Medium outperforms in 1 benchmarks (GPQA), while IBM Granite 4.2 30B is better at 1 benchmark (AIME 2025).
Both models are evenly matched across the benchmarks.
Human preference
Blind head-to-head votes and playground preference scores
Context Window
Maximum input and output token capacity
Only GPT-5 Medium specifies input context (400,000 tokens). Only GPT-5 Medium specifies output context (128,000 tokens).
Input capabilities
Documented input modalities across available providers
GPT-5 Medium supports multimodal inputs, whereas IBM Granite 4.2 30B does not.
GPT-5 Medium can handle both text and other forms of data like images, making it suitable for multimodal applications.
GPT-5 Medium
IBM Granite 4.2 30B
License
Usage and distribution terms
GPT-5 Medium is licensed under a proprietary license, while IBM Granite 4.2 30B uses Apache 2.0.
License differences may affect how you can use these models in commercial or open-source projects.
Proprietary
Closed source
Apache 2.0
Open weights
Release Timeline
When each model was launched
GPT-5 Medium was released on 2025-08-07, while IBM Granite 4.2 30B was released on 2026-08-25.
IBM Granite 4.2 30B is 13 months newer than GPT-5 Medium.
Aug 7, 2025
1.1 years ago
Aug 25, 2026
5 days ago
1.0yr newerKnowledge Cutoff
When training data ends
GPT-5 Medium has a documented knowledge cutoff of 2024-09-30, while IBM Granite 4.2 30B's cutoff date is not specified.
We can confirm GPT-5 Medium's training data extends to 2024-09-30, but cannot make a direct comparison without IBM Granite 4.2 30B's cutoff date.
Sep 2024
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Outputs Comparison
Judge for yourself.
Run your own prompts against GPT-5 Medium and IBM Granite 4.2 30B side-by-side, then vote on the output you prefer.
FAQ
Common questions about GPT-5 Medium vs IBM Granite 4.2 30B.