$ diff granite-4-2 gpt-5-6-sol
Granite 4.2 vs GPT-5.6 Sol
Values come from Granite 4.2 and GPT-5.6 Sol, where each is cited to its source. This page states no benchmark result and ranks neither model — it puts two published specifications next to each other. Where a lab has not published a figure, the row says so rather than guessing.
IBMGranite 4.2
- context
- 512K
- weights
- open
- $/M in
- —
- $/M out
- —
- context
- 1.1M
- weights
- closed
- $/M in
- $4
- $/M out
- $20
What actually differs
- Context window
- GPT-5.6 Sol takes 1.1M against 512K — 2.1× more room in a single request.
- Weights
- Granite 4.2 publishes weights (Apache 2.0); GPT-5.6 Sol is API-only. That decides self-hosting, air-gapped deployment and fine-tuning before any capability question does.
- Recency
- Granite 4.2 shipped 47 days after GPT-5.6 Sol (2026-08-25 vs 2026-07-09).
Full spec
| Attribute | Granite 4.2 | GPT-5.6 Sol |
|---|---|---|
| Developer | IBM | OpenAI |
| Released | 2026-08-25 | 2026-07-09 |
| Context window | 512K (30B); unknown (3B, 8B) | 1.05M tokens |
| Pricing | not applicable — open weights, no hosted rate published | $4/M input · $20/M output (Sol, promotional from 2026-08-21 through at least 2026-11-21; list $5/M · $30/M; family tiers below) |
| License | Apache 2.0 | proprietary (API-only; no weight release) |
| Availability | Hugging Face, Ollama, GitHub | ChatGPT (subscription), API |