---
title: "OpenAI: gpt-oss-20b — price, capability and what beats it · Undominated.ai"
canonical: https://undominated.ai/models/openai__gpt-oss-20b/
description: "OpenAI: gpt-oss-20b: $0.030/M in, $0.130/M out. Independent capability scores, context-tier pricing, and the models that are both better and cheaper."
---

# OpenAI: gpt-oss-20b — price, capability and what beats it · Undominated.ai

> OpenAI: gpt-oss-20b: $0.030/M in, $0.130/M out. Independent capability scores, context-tier pricing, and the models that are both better and cheaper.

[Leaderboard](/) / OpenAI

# gpt-oss-20b

OpenAI · released 2025-08-05

 $0.055 per million tokens, balanced Balanced Summarise Chat Code gen Agentic

## Solar Pro 4 is both better and cheaper.

It scores **+26.4** higher and costs **5% less** ($0.052/M against $0.055/M) on this workload — and it does everything this model does.

[Ling-3.0-flash](/models/inclusionai__ling-3.0-flash) is cheaper still (43% less) but drops 131K → 33K max output.

### Every price dimension

| Input | $0.030 /M |
| --- | --- |
| Output | $0.130 /M |
| Cached input | $0.030 /M |

### Independent scores

| Intelligence | 15.2 |
| --- | --- |
| Coding | 20.7 |
| Agentic | 3.1 |
| LMArena Elo | 1287.8 default |

Sources are listed separately rather than averaged. Across the 62 models both have scored they correlate at r = 0.806 — close agreement overall, but four models rank very differently between them, and a blended score would hide exactly those.

### Capability

| Context window | 131K |
| --- | --- |
| Max output | 131K |
| Input modes | text |
| Tool use | yes |
| Reasoning | always on |
| Knowledge cutoff | 2024-06-30 |

### Provenance

| Price source | openrouter.ai |
| --- | --- |
| Fetched | 2026-08-24 |
| Quality data | verified |

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...