Granite 4.1 8B is a dense, decoder-only 8-billion-parameter language model from IBM, part of the Granite 4.1 family. It supports a 131K-token context window and is designed for enterprise tasks...
Model details →IBM: Granite 4.1 8B vs OpenAI: gpt-oss-20b
OpenAI: gpt-oss-20b wins on 2 of 6 axes — pricing and capability skew in its favour for most workloads.
gpt-oss-20b is an open-weight 21B parameter model released by OpenAI under the Apache 2.0 license. It uses a Mixture-of-Experts (MoE) architecture with 3.6B active parameters per forward pass, optimized for...
Model details →Side-by-side comparison
| Capability | IBM: Granite 4.1 8B | OpenAI: gpt-oss-20b | 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. | $0.05 | $0.03 | 🏆 OpenAI: gpt-oss-20b |
| Output price (per 1M) Cost per million output tokens billed by the provider. | $0.10 | $0.13 | 🏆 IBM: Granite 4.1 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 | 🏆 OpenAI: gpt-oss-20b |
Frequently asked questions
Is IBM: Granite 4.1 8B better than OpenAI: gpt-oss-20b?
OpenAI: gpt-oss-20b wins on 2 of 6 axes — pricing and capability skew in its favour for most workloads.
What's the price difference between IBM: Granite 4.1 8B and OpenAI: gpt-oss-20b?
Input: $0.05 vs $0.03 per 1M tokens. Output: $0.10 vs $0.13 per 1M tokens.
What context windows do IBM: Granite 4.1 8B and OpenAI: gpt-oss-20b support?
IBM: Granite 4.1 8B supports up to 131K tokens. OpenAI: gpt-oss-20b supports up to 131K tokens.
Do both IBM: Granite 4.1 8B and OpenAI: gpt-oss-20b support tool calling?
IBM: Granite 4.1 8B: yes. OpenAI: gpt-oss-20b: yes.
Compare IBM: Granite 4.1 8B with other models
vs Anthropic Claude Haiku Latestvs Anthropic Claude Sonnet Latestvs Anthropic: Claude Fable Latestvs Anthropic: Claude Opus Latest