GPT-OSS & Qwen Family
Open-weight, transparent, and free. GPT-OSS 20B delivers fast, reliable text generation; Qwen 3.6 27B brings multimodal vision to the open ecosystem.
Technical Specifications
GPT-OSS and Qwen are the backbone of Solaria's free tier, powered by Groq's ultra-fast inference.
| Model | Context | Access |
|---|---|---|
| GPT-OSS 20B | 131K | Free |
| Qwen 3.6 27B | 131K | Free |
Use Cases
Free AI for Everyone
GPT-OSS 20B is completely free in Solaria. No credit card, no limits beyond daily quotas — just open the chat and start using a capable open-weight model.
Fast Coding Assistance
Powered by Groq's inference stack, GPT-OSS responds in milliseconds with strong agentic coding performance. Perfect for quick code suggestions, syntax help, and debugging on the fly.
Vision with Qwen 3.6
Qwen 3.6 27B adds vision capabilities to the free tier. Upload images and ask questions — all for free.
Open & Transparent
GPT-OSS is OpenAI's open-weight model and Qwen is Alibaba's open family — architectures and model cards are documented and auditable. Ideal for users who value transparency and open-source principles.
When to choose GPT-OSS/Qwen over GLM or premium models
GPT-OSS is the fastest free model in Solaria thanks to Groq's inference. If you need instant responses for quick Q&A, brainstorming, or coding help, GPT-OSS 20B is unbeatable at zero cost.
For users who care about open-source principles, GPT-OSS and Qwen are the clear choice. Their weights are openly available, the architecture is documented, and there are no proprietary black boxes.
Qwen 3.6 27B adds vision to the free tier, something no other free model offers. If you need basic image analysis without paying, Qwen 3.6 is your best option.
Benchmarks
GPT-OSS 20B delivers strong performance for a free, open-weight model. Qwen 3.6 27B adds flagship-grade reasoning and multimodal capabilities.
Inference speed measured on Groq's LPU stack (Aug 2026). Free tier may have rate limits during peak usage.
Chat with GPT-OSS for Free
GPT-OSS 20B and Qwen 3.6 27B are free for all users. Powered by Groq for lightning-fast responses.
// GPT-OSS 20B — free and fast
const response = await fetch('/api/chat/send', {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify({
model: 'openai/gpt-oss-20b',
messages: [
{ role: 'user', content: 'Explain REST API design principles' }
],
}),
})Frequently Asked Questions
Is GPT-OSS really free?
Yes. GPT-OSS 20B and Qwen 3.6 27B are completely free for all Solaria users, including guests. There are no hidden costs, no API keys required, and no credit card needed. Daily message limits apply to prevent abuse.
Why is GPT-OSS so fast?
GPT-OSS in Solaria is powered by Groq's Language Processing Units (LPUs), specialized hardware designed specifically for AI inference. This delivers response times 10-100x faster than running on standard GPUs, often under 100ms for simple queries.
Can the free tier analyze images?
Yes, Qwen 3.6 27B supports vision. You can upload images in the Solaria chat and ask Qwen to describe, analyze, or answer questions about them. This is a unique feature for a completely free model.
Is GPT-OSS open source?
GPT-OSS is OpenAI's "open weight" model — the weights are publicly available for download and use, with a permissive license (Apache 2.0). Qwen is similarly open-weight from Alibaba. Both are more transparent than fully proprietary models, with documented architectures and model cards.
Should I use GPT-OSS/Qwen or GLM for free AI?
Both are excellent free options. GPT-OSS is faster (Groq inference) and Qwen 3.6 has vision. GLM tends to be more precise with structured output and instruction following. We recommend trying both and seeing which fits your style. In Solaria, switching between them takes one click.