Granite 4.2 8B is a dense reasoning model from IBM. It is suited for mathematics, code generation, multilingual dialogue, and agentic workflows that need multi-step reasoning. It supports full, low-effort,...
Model details →IBM: Granite 4.2 8B vs OpenAI: gpt-oss-120b (exacto)
IBM: Granite 4.2 8B and OpenAI: gpt-oss-120b (exacto) are evenly matched on 6 axes — pick the one whose provider, latency, or licensing fits your stack.
gpt-oss-120b is an open-weight, 117B-parameter Mixture-of-Experts (MoE) language model from OpenAI designed for high-reasoning, agentic, and general-purpose production use cases. It activates 5.1B parameters per forward pass and is optimize…
Model details →Side-by-side comparison
| Capability | IBM: Granite 4.2 8B | OpenAI: gpt-oss-120b (exacto) | Winner |
|---|---|---|---|
| Context window Maximum number of input tokens the model can attend to in a single request. | 131K | 131K | Tie |
| Input price (per 1M) Cost per million input tokens billed by the provider. | $0.10 | $0.04 | 🏆 OpenAI: gpt-oss-120b (exacto) |
| Output price (per 1M) Cost per million output tokens billed by the provider. | $0.15 | $0.19 | 🏆 IBM: Granite 4.2 8B |
| Tool / function calling First-class support for emitting structured tool calls. | Yes | Yes | Tie |
| Vision input Accepts image inputs alongside text. | — | — | Tie |
| Reasoning mode Internal chain-of-thought / extended-thinking support. | Yes | Yes | Tie |
Frequently asked questions
Is IBM: Granite 4.2 8B better than OpenAI: gpt-oss-120b (exacto)?
IBM: Granite 4.2 8B and OpenAI: gpt-oss-120b (exacto) are evenly matched on 6 axes — pick the one whose provider, latency, or licensing fits your stack.
What's the price difference between IBM: Granite 4.2 8B and OpenAI: gpt-oss-120b (exacto)?
Input: $0.10 vs $0.04 per 1M tokens. Output: $0.15 vs $0.19 per 1M tokens.
What context windows do IBM: Granite 4.2 8B and OpenAI: gpt-oss-120b (exacto) support?
IBM: Granite 4.2 8B supports up to 131K tokens. OpenAI: gpt-oss-120b (exacto) supports up to 131K tokens.
Do both IBM: Granite 4.2 8B and OpenAI: gpt-oss-120b (exacto) support tool calling?
IBM: Granite 4.2 8B: yes. OpenAI: gpt-oss-120b (exacto): yes.