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OpenAI: gpt-oss-20b

🇺🇸 OpenAI · gpt-oss-20b

Input Price $0.029 per million tokens NT$0.93
Output Price $0.140 per million tokens NT$4.5
Context Window 131K tokens
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Overview

OpenAI: gpt-oss-20b is a large language model API from OpenAI, part of its gpt-oss-20b model family. At $0.029 per million input tokens and $0.140 per million output tokens, it sits in the budget tier — among the cheaper options for high-throughput or cost-sensitive workloads. Output tokens cost about 5× as much as input, so prompt-heavy workloads run noticeably cheaper than generation-heavy ones. The 131K-token context window — around 197 pages of text — comfortably handles long documents, multi-file code, or extended conversations. On Artificial Analysis's Intelligence Index it scores 15 (F grade), a useful proxy for its general reasoning strength relative to the other models tracked here. All prices on this page reflect OpenRouter's routed rates and are re-synced automatically every day; confirm against the provider's official pricing before committing to production.

Dimension Unit Price (USD) Price (TWD) Effective From
Input per 1M tokens $0.029 NT$0.93
Output per 1M tokens $0.140 NT$4.5

Provider
OpenAI
Model Family
gpt-oss-20b
Version String
openai/gpt-oss-20b
Status
Active
Modality
Text
Context Window
131,072 tokens
Output Limit
— tokens

Index Metrics

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

Agentic Index 3 F Measured: 2026-07-01
Coding Index 21 D Measured: 2026-07-01
Intelligence Index 15 F Measured: 2026-07-01

Benchmark Scores

Data source: Artificial Analysis

AA-LCR 30.7% D Measured: 2026-07-01
GPQA Diamond 68.8% B Measured: 2026-07-01
HLE 9.8% C Measured: 2026-07-01
IFBench 65.1% B Measured: 2026-07-01
Non-Hallucination 5.9% Measured: 2026-07-01
Omniscience Accuracy 15.5% Measured: 2026-07-01
SciCode 34.4% B Measured: 2026-07-01
Tau2 60.2% Measured: 2026-07-01
TerminalBench 10.6% Measured: 2026-07-01

Performance Metrics

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

First Token Latency 0.8s Measured: 2026-07-01
Output Speed 228 t/s Measured: 2026-07-01
Response Time 11.8s Measured: 2026-07-01

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
Output $0.140 OpenRouter
Input $0.029 OpenRouter
Output $0.140 OpenRouter
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Output $0.140 OpenRouter
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Output $0.140 OpenRouter
Input $0.029 OpenRouter
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Input $0.029 OpenRouter
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Output $0.140 OpenRouter
Input $0.029 OpenRouter

Key Insights

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

  • OpenAI: gpt-oss-20b Input price: $0.029/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