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 lower-latency inference and deplo…
Model details →OpenAI: gpt-oss-20b vs Prime Intellect: INTELLECT-3
OpenAI: gpt-oss-20b wins on 2 of 6 axes — pricing and capability skew in its favour for most workloads.
INTELLECT-3 is a 106B-parameter Mixture-of-Experts model (12B active) post-trained from GLM-4.5-Air-Base using supervised fine-tuning (SFT) followed by large-scale reinforcement learning (RL). It offers state-of-the-art performance for its …
Model details →Side-by-side comparison
| Capability | OpenAI: gpt-oss-20b | Prime Intellect: INTELLECT-3 | 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. | $0.03 | $0.20 | 🏆 OpenAI: gpt-oss-20b |
| Output price (per 1M) Cost per million output tokens billed by the provider. | $0.11 | $1.10 | 🏆 OpenAI: gpt-oss-20b |
| 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 OpenAI: gpt-oss-20b better than Prime Intellect: INTELLECT-3?
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 OpenAI: gpt-oss-20b and Prime Intellect: INTELLECT-3?
Input: $0.03 vs $0.20 per 1M tokens. Output: $0.11 vs $1.10 per 1M tokens.
What context windows do OpenAI: gpt-oss-20b and Prime Intellect: INTELLECT-3 support?
OpenAI: gpt-oss-20b supports up to 131K tokens. Prime Intellect: INTELLECT-3 supports up to 131K tokens.
Do both OpenAI: gpt-oss-20b and Prime Intellect: INTELLECT-3 support tool calling?
OpenAI: gpt-oss-20b: yes. Prime Intellect: INTELLECT-3: yes.