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OpenAI: gpt-oss-20b

🇺🇸 OpenAI · gpt-oss-20b

Input Price $0.030 per million tokens NT$0.96
Output Price $0.140 per million tokens NT$4.5
Context Window 131K tokens Output limit: 131K
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Dimension Unit Price (USD) Price (TWD) Effective From
Input per 1M tokens $0.030 NT$0.96 2026-05-03
Output per 1M tokens $0.140 NT$4.5 2026-05-03

Provider
OpenAI (OpenAI)
Model Family
gpt-oss-20b
Version String
openai/gpt-oss-20b
Status
active
Modality
text
Context Window
131,072 tokens
Output Limit
131,072 tokens

Index Metrics

Cross-domain capability indexes evaluated by Artificial Analysis — Artificial Analysis

Agentic Index 28 C Measured: 2026-05-27
Coding Index 19 D Measured: 2026-05-27
Intelligence Index 24 D Measured: 2026-05-27

Benchmark Scores

Data source: Artificial Analysis

AA-LCR 30.7% D Measured: 2026-05-27
GPQA Diamond 68.8% B Measured: 2026-05-27
IFBench 65.1% B Measured: 2026-05-27
Non-Hallucination 5.9% Measured: 2026-05-27
Omniscience Accuracy 15.5% Measured: 2026-05-27
SciCode 34.4% B Measured: 2026-05-27
Tau2 60.2% Measured: 2026-05-27
TerminalBench 10.6% Measured: 2026-05-27

Performance Metrics

Real-world benchmarks, updated every 72 hours by Artificial Analysis — Artificial Analysis

First Token Latency 0.7s Measured: 2026-05-27
Output Speed 239 t/s Measured: 2026-05-27
Response Time 11.2s Measured: 2026-05-27

90-Day Price Trend

Input / Output price (USD per 1M tokens)

Past 90 days of records; every price change is shown here

Date Dimension Price (USD) Source
2026-05-27 Output $0.140 openrouter
2026-05-27 Input $0.030 openrouter
2026-05-26 Output $0.140 openrouter
2026-05-26 Input $0.030 openrouter
2026-05-25 Output $0.140 openrouter
2026-05-25 Input $0.030 openrouter
2026-05-24 Output $0.140 openrouter
2026-05-24 Input $0.030 openrouter
2026-05-23 Output $0.140 openrouter
2026-05-23 Input $0.030 openrouter
2026-05-22 Output $0.140 openrouter
2026-05-22 Input $0.030 openrouter
2026-05-22 Output $0.140 openrouter
2026-05-22 Input $0.030 openrouter
2026-05-21 Output $0.140 openrouter
2026-05-21 Input $0.030 openrouter
2026-05-20 Output $0.140 openrouter
2026-05-20 Input $0.030 openrouter
2026-05-19 Output $0.140 openrouter
2026-05-19 Input $0.030 openrouter
2026-05-18 Output $0.140 openrouter
2026-05-18 Input $0.030 openrouter
2026-05-17 Output $0.140 openrouter
2026-05-17 Input $0.030 openrouter
2026-05-16 Output $0.140 openrouter
2026-05-16 Input $0.030 openrouter
2026-05-16 Output $0.140 openrouter
2026-05-16 Input $0.030 openrouter
2026-05-16 Output $0.140 openrouter
2026-05-16 Input $0.030 openrouter
2026-05-16 Output $0.140 openrouter
2026-05-16 Input $0.030 openrouter
2026-05-15 Output $0.140 openrouter
2026-05-15 Input $0.030 openrouter
2026-05-14 Output $0.140 openrouter
2026-05-14 Input $0.030 openrouter
2026-05-13 Output $0.140 openrouter
2026-05-13 Input $0.030 openrouter
2026-05-12 Output $0.140 openrouter
2026-05-12 Input $0.030 openrouter
2026-05-11 Output $0.140 openrouter
2026-05-11 Input $0.030 openrouter
2026-05-10 Output $0.140 openrouter
2026-05-10 Input $0.030 openrouter
2026-05-10 Output $0.140 openrouter
2026-05-10 Input $0.030 openrouter
2026-05-09 Output $0.140 openrouter
2026-05-09 Input $0.030 openrouter
2026-05-09 Output $0.140 openrouter
2026-05-09 Input $0.030 openrouter

Description

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...

Key Insights

Key data points from this page for quick reference and citation.

  • OpenAI: gpt-oss-20b Input price: $0.03/M tokens
  • OpenAI: gpt-oss-20b Output price: $0.14/M tokens
  • Context window: 131,072 tokens
  • Provider: OpenAI
  • Model family: gpt-oss-20b
  • Modalities: text
  • Data source: OpenRouter, updated daily