Qwen: Qwen3 VL 8B Thinking✓ Catalog verified
Qwen3-VL-8B-Thinking is the reasoning-optimized variant of the Qwen3-VL-8B multimodal model, designed for advanced visual and textual reasoning across complex scenes, documents, and temporal sequences. It integrates enhanced multimodal alignment and long-context processing (native 256K, expandable to 1M tokens) for tasks such as scientific visual analysis, causal inference, and mathematical reasoning over image or video inputs. Compared to the Instruct edition, the Thinking version introduces deeper visual-language fusion and deliberate reasoning pathways that improve performance on long-chain logic tasks, STEM problem-solving, and multi-step video understanding. It achieves stronger temporal grounding via Interleaved-MRoPE and timestamp-aware embeddings, while maintaining robust OCR, multilingual comprehension, and text generation on par with large text-only LLMs.
Overview
Qwen3-VL-8B-Thinking is the reasoning-optimized variant of the Qwen3-VL-8B multimodal model, designed for advanced visual and textual reasoning across complex scenes, documents, and temporal sequences. It integrates enhanced multimodal alignment and long-context processing (native 256K, expandable to 1M tokens) for tasks such as scientific visual analysis, causal inference, and mathematical reasoning over image or video inputs. Compared to the Instruct edition, the Thinking version introduces deeper visual-language fusion and deliberate reasoning pathways that improve performance on long-chain logic tasks, STEM problem-solving, and multi-step video understanding. It achieves stronger temporal grounding via Interleaved-MRoPE and timestamp-aware embeddings, while maintaining robust OCR, multilingual comprehension, and text generation on par with large text-only LLMs.
Access: available through the official Qwen API. Context window: 131K.
Specifications
| API identifier | qwen/qwen3-vl-8b-thinking |
| Provider | Qwen |
| Model type | Multimodal LLM |
| Context window | 131K catalog |
| Input modalities | image · text |
| Output modalities | text |
| Released | Oct 14, 2025 |
| Tokenizer | Qwen3 |
| Moderated | No |
| Architecture modality | text+image->text |
API defaults
{
"top_p": 0.95,
"temperature": 1
}Pricing
Live pricing components for qwen/qwen3-vl-8b-thinking as published in the catalog.
| Pricing component | Raw unit price | Normalized | Unit |
|---|---|---|---|
| Prompt tokens | $1.17e-7 | $0.12 / 1M | Per input token |
| Completion tokens | $0.000001365 | $1.36 / 1M | Per output token |
| Request fee | N/A | N/A | Per request |
| Image fee | N/A | N/A | Per image unit |
| Web search fee | N/A | N/A | Per search request |
Cost calculator
Estimate monthly spend from your own token volumes.
Estimated Total Cost
$0.33Calculated from current list pricing in the ModelsAtlas catalog.Capabilities
| Capability | Status | What it means |
|---|---|---|
| Visual Understanding | ✓ Supported | Image and document analysis support |
| Audio Processing | Not advertised | Speech and voice aligned flows |
| Tool Calling | ✓ Supported | Supports tools / function calling |
| Self-Hosting | ✓ Supported | Deploy outside managed APIs |
Capability signals
Directional signals derived from model metadata and capability tags — not official benchmark submissions.
Quick start
Call Qwen: Qwen3 VL 8B Thinking through an OpenAI-compatible client.
from openai import OpenAI
client = OpenAI(
base_url="https://openrouter.ai/api/v1",
api_key="YOUR_API_KEY"
)
response = client.chat.completions.create(
model="qwen/qwen3-vl-8b-thinking",
messages=[{"role": "user", "content": "Explain quantum physics."}]
)
print(response.choices[0].message.content)Alternatives
Closest models by context window from a different provider.
| Model | Provider | Context | Input /1M | Actions |
|---|---|---|---|---|
| AionLabs: Aion-1.0 | Aion Labs | 131K | $4.00 | View → |
| AionLabs: Aion-1.0-Mini | Aion Labs | 131K | $0.70 | View → |
Sources & attribution
Pricing and metadata are maintained in the ModelsAtlas catalog.
Frequently asked questions
How much does Qwen: Qwen3 VL 8B Thinking cost?
$0.12 per 1M input tokens and $1.36 per 1M output tokens on the official Qwen API.
What is the context window of Qwen: Qwen3 VL 8B Thinking?
Qwen: Qwen3 VL 8B Thinking supports up to 131K tokens of context.
Does Qwen: Qwen3 VL 8B Thinking support tool / function calling?
Yes, Qwen: Qwen3 VL 8B Thinking supports tool / function calling — you can register tools and the model will emit structured tool calls.
How do I access Qwen: Qwen3 VL 8B Thinking?
Use the official Qwen API with the model id `qwen/qwen3-vl-8b-thinking`. See the Quick start section above for code examples.