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GPT Oss 20b

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...

Intelligence#277 / 563
15
Artificial Analysis Intelligence Index
Speed#26 / 576
211.5
Output tokens per second (median)
Input Price#215 / 576
$0.03NT$ 1
USD / 1M tokens
Output Price#223 / 576
$0.13NT$ 4
USD / 1M tokens
First-token latency#278 / 576
0.42s
Time to first token (AA median)
ProviderOpenAI
Released2025年8月
Model IDopenai/gpt-oss-20b

Technical specifications

Context window
131K tokens
Reasoning
Yes
Input
Text
Output
Text

Pricing comparison

BazaarLink retail price alongside AA's observed market standard.

BazaarLink price our site

Input$0.03NT$ 1
Output$0.13NT$ 4
Cache read$0.03NT$ 1
Cache write
3:1 blended (est.)$0.06NT$ 2
All prices per 1M tokens. Supports TWD credit card / official invoice.

Market reference Artificial Analysis

Input$0.05
Output$0.20
Cache readAA not tracked
Cache writeAA not tracked
3:1 blended$0.09
Our price differs from AA reference by ~40%.
Source: artificialanalysis.ai

Independent benchmarks

Scores below come from Artificial Analysis, an independent third party. BazaarLink does not participate in the testing.

Intelligence 15
Coding 21
Math 89
MMLU 75
GPQA 69
This modelCategory leader
Coding ability
#126out of 176 models
LiveCodeBench / SciCode and similar
Overall intelligence
#277out of 563 models
Aggregated across academic benchmarks
Math reasoning
#30out of 269 models
AIME / MATH-500 / SciCode
Time to first token
#278out of 576 models
AA 全球 p50:0.42 秒
Intelligence
15
Mid-tier
This model
15
Category leader
60
Median
15
Coding
21
Mid-tier
This model
21
Category leader
78
Median
36
Math
89
Top 11%
This model
89
Category leader
99
Median
53
MMLU Pro
75%
This model
75%
Category leader
90%
Median
75%
GPQA
69%
This model
69%
Category leader
94%
Median
68%
LiveCodeBench
78%
This model
78%
Category leader
42%
Median
42%
HLE
10%
This model
10%
Category leader
53%
Median
7%
SciCode
34%
This model
34%
Category leader
60%
Median
33%
IFBench
65%
This model
65%
Category leader
83%
Median
44%
τ²-Bench Telecom
60%
This model
60%
Category leader
99%
Median
46%
AA-LCR
31%
This model
31%
Category leader
76%
Median
39%
Terminal-Bench Hard
11%
This model
11%
Category leader
66%
Median
14%

Top 5 — CodingCoding Index leaderboard

1GPT-5.6 Sol (xhigh)openai/gpt-5-6-sol-xhigh78$5 / $30
3GPT-5.6 Sol (high)openai/gpt-5-6-sol-high77$5 / $30
AASource: Artificial Analysis · Independent third-party evaluation; not influenced by BazaarLinkView full evaluation on AA →

Quick Start

Use GPT Oss 20b via BazaarLink API — just change the base_url:

Python
from openai import OpenAI

client = OpenAI(
    base_url="https://bazaarlink.ai/api/v1",
    api_key="sk-bl-YOUR_API_KEY",
)

response = client.chat.completions.create(
    model="openai/gpt-oss-20b",
    messages=[{"role": "user", "content": "Hello!"}],
)
print(response.choices[0].message.content)
TypeScript
import OpenAI from "openai";

const client = new OpenAI({
  baseURL: "https://bazaarlink.ai/api/v1",
  apiKey: "sk-bl-YOUR_API_KEY",
});

const response = await client.chat.completions.create({
  model: "openai/gpt-oss-20b",
  messages: [{ role: "user", content: "Hello!" }],
});
console.log(response.choices[0].message.content);

Why use GPT Oss 20b via BazaarLink?

  • USD billing (TWD-quoted) + unified invoices — no foreign credit card needed for Taiwan teams
  • OpenAI-compatible API — zero code changes required
  • Automatic failover — multi-provider redundancy for the same model
  • Chinese-language support — local team, instant help
Try Now← All Models

Frequently Asked Questions

What is GPT Oss 20b?

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...

How much does the GPT Oss 20b API cost?

GPT Oss 20b costs $0.0300 per 1K input tokens and $0.1300 per 1K output tokens when accessed through BazaarLink.

How do I use GPT Oss 20b with the OpenAI SDK?

Set base_url to "https://bazaarlink.ai/api/v1" and use model ID "openai/gpt-oss-20b". All OpenAI SDK methods (chat.completions, embeddings, streaming) work without code changes.

What is the context window for GPT Oss 20b?

GPT Oss 20b supports a context window of 131,072 tokens.

Is GPT Oss 20b available for free?

GPT Oss 20b is a paid model. BazaarLink offers free trial credits on registration so you can test it without a credit card.

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