GPT OSS 20B API
OpenAI
GPT OSS 20B
About GPT OSS 20B
GPT OSS 20B is a large language model developed by OpenAI. It's particularly well-suited for tackling complex, multi-step reasoning problems, and handling large contexts of up to 128K tokens. Its 128K-token context window means you can pass in entire documents, codebases, or conversation histories without losing context. Developers choose GPT OSS 20B when they need reliable, production-quality AI inference through a simple API — and on Qubax, it's available at a fraction of the cost of traditional providers.
In the broader AI landscape, GPT OSS 20B sits among the capable offerings from OpenAI With advanced reasoning, it competes with the most capable models on the market. What sets it apart on Qubax isn't just the model itself — it's the accessibility. Rather than dealing with enterprise contracts or traditional payment rails, you get instant access via an OpenAI-compatible endpoint. That means you can drop GPT OSS 20B into Cursor, Cline, LangChain, or any framework that speaks the OpenAI protocol and start building immediately.
Qubax offers GPT OSS 20B at 85% below OpenRouter's price — just $0.0075 per million input tokens and $0.029 per million output tokens. That pricing advantage compounds quickly at scale: a high-volume application sending millions of tokens per day can save significantly compared to using OpenRouter or the provider directly. And because Qubax runs on crypto-native infrastructure, you can pay with USDC, USDT, ETH, BTC, or 200+ other cryptocurrencies — no credit card or bank account required.
Pricing
| Token Type | Qubax | OpenRouter | You Save |
|---|---|---|---|
| Input (per 1M tokens) | $0.0075 | $0.050 | 85% |
| Output (per 1M tokens) | $0.029 | $0.190 | 85% |
Prices per 1 million tokens. Pay with 200+ cryptocurrencies.
Price History (60 Days)
This model's price over the last 60 days. Compare against all top AI models →
Estimated Monthly Cost
Specifications
Use Cases
Capabilities
Quick Start
from openai import OpenAI
client = OpenAI(
base_url="https://api.qubax.ai/v1",
api_key="qbx_live_YOUR_API_KEY",
)
response = client.chat.completions.create(
model="e2ee-gpt-oss-20b-p",
messages=[
{"role": "user", "content": "Hello!"}
],
)
print(response.choices[0].message.content)import OpenAI from "openai";
const client = new OpenAI({
baseURL: "https://api.qubax.ai/v1",
apiKey: "qbx_live_YOUR_API_KEY",
});
const response = await client.chat.completions.create({
model: "e2ee-gpt-oss-20b-p",
messages: [{ role: "user", content: "Hello!" }],
});
console.log(response.choices[0].message.content);curl https://api.qubax.ai/v1/chat/completions \
-H "Content-Type: application/json" \
-H "Authorization: Bearer qbx_live_YOUR_API_KEY" \
-d '{
"model": "e2ee-gpt-oss-20b-p",
"messages": [{"role": "user", "content": "Hello!"}]
}'Get your API key from the dashboard.
Why use GPT OSS 20B on Qubax?
85% Cheaper
Up to 85% off OpenRouter prices
Pay with Crypto
200+ coins (BTC, ETH, SOL, USDT, USDC & more). No credit card needed.
OpenAI Compatible
Drop-in replacement. Works with Cline, Cursor, any tool.
More from OpenAI
Compare GPT OSS 20B with alternatives
| Model | Provider | Input / 1M | Output / 1M | vs GPT OSS 20B |
|---|---|---|---|---|
| GPT OSS 20B | OpenAI | $0.0075 | $0.029 | — |
| NVIDIA Nemotron 3 Ultra 550B | Other | $0.0094 | $0.047 | More expensive |
| MiniMax M2.1 | MiniMax | $0.0045 | $0.018 | Cheaper |
| DeepSeek V4.1 Flash | DeepSeek | $0.012 | $0.047 | More expensive |
| DeepSeek V4 Flash | DeepSeek | $0.0065 | $0.026 | Cheaper |
Frequently Asked Questions
How much does the GPT OSS 20B API cost?
On Qubax, GPT OSS 20B costs $0.0075 per 1M input tokens and $0.029 per 1M output tokens. This is 85% cheaper than OpenRouter's price of $0.050 per 1M input tokens.
Is the GPT OSS 20B API compatible with OpenAI?
Yes. Qubax provides an OpenAI-compatible API. You can use GPT OSS 20B as a drop-in replacement by changing your base URL to https://api.qubax.ai/v1 and using your Qubax API key. It works with Cline, Cursor, OpenCode, Hermes Agent, and any tool that supports OpenAI APIs.
Why is GPT OSS 20B cheaper on Qubax than OpenRouter?
Qubax sources AI inference from an open compute marketplace on the Base blockchain where GPU providers compete on price. We pass the savings to you — 85% cheaper than OpenRouter's price for GPT OSS 20B.
How do I pay for GPT OSS 20B API usage?
Qubax uses prepaid crypto credits. Deposit USDC on the Base chain and your balance is automatically deducted as you use the API. No credit card required. Top up from $3.
What is the context window of GPT OSS 20B?
GPT OSS 20B supports a context window of 128K tokens, allowing you to process large documents, codebases, or long conversations in a single request.
What can I build with GPT OSS 20B?
GPT OSS 20B is versatile enough for a wide range of applications. You can use it to tackle complex multi-step reasoning tasks, process long documents and entire codebases, and more. Because it's served through Qubax's OpenAI-compatible API, integration into existing apps, agents, or workflows takes just a few lines of code.
How fast is GPT OSS 20B on Qubax?
GPT OSS 20B on Qubax supports streaming responses, so tokens begin arriving in real time as they're generated. Latency depends on the provider and prompt complexity, but most requests start streaming within 200–800 milliseconds. Qubax routes requests through an intelligent routing layer, which selects the fastest available compute provider for each request — so you get competitive latency at a lower price.
GPT OSS 20B vs NVIDIA Nemotron 3 Ultra 550B: which should I choose?
GPT OSS 20B by OpenAI and NVIDIA Nemotron 3 Ultra 550B by Other are both strong models in a similar price tier. GPT OSS 20B excels at complex reasoning. NVIDIA Nemotron 3 Ultra 550B comes from a different lab and may have different strengths depending on your workload. On Qubax, GPT OSS 20B starts at $0.0075/1M input tokens versus NVIDIA Nemotron 3 Ultra 550B's $0.0094/1M — making GPT OSS 20B the more cost-effective option for high-volume workloads. Both are available on Qubax with crypto payments and OpenAI-compatible APIs, so you can try each and switch freely.
Can I use GPT OSS 20B for commercial projects?
Yes. GPT OSS 20B on Qubax can be used for commercial purposes. You own the outputs you generate. Qubax provides the API infrastructure — you bring your use case.
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