THUDM/GLM-4.1V-9B-Thinking — Free AI Model & API

siliconflow/thudm-glm-4-1v-9b-thinking
chat reasoning
Get API key →
Context Window 66K
Max Output 66K
Rate Limit 1,000 RPM, 50K TPM
Cost $0.00 FREE
Free Period Since May 10, 2026
Credit Card Not required
Status Online

Overview

GLM-4.1V 9B Thinking is Zhipu AI's vision-language model with chain-of-thought reasoning, available free on SiliconFlow. At 9B parameters, it supports both image understanding and step-by-step reasoning — suitable for visual Q&A, diagram analysis, and multimodal tasks that benefit from deliberation. OpenAI-compatible API via SiliconFlow's China-based infrastructure.

Model ID
thudm-glm-4-1v-9b-thinking
Base URL
https://api.siliconflow.cn/v1
Specifications
Context: 66K · Output: 66K · Modality: text · OpenAI Compat: Yes

Quick Start

Integrate THUDM/GLM-4.1V-9B-Thinking with 3 lines of code. See the config generator for Claude Code, Cursor, and more.

from openai import OpenAI

client = OpenAI(
 base_url="https://api.siliconflow.cn/v1",
 api_key="YOUR_API_KEY"
)

response = client.chat.completions.create(
 model="thudm-glm-4-1v-9b-thinking",
 messages=[{"role": "user", "content": "Hello!"}]
)
print(response.choices[0].message.content)
import OpenAI from "openai";

const openai = new OpenAI({
 baseURL: "https://api.siliconflow.cn/v1",
 apiKey: "YOUR_API_KEY",
});

const completion = await openai.chat.completions.create({
 model: "thudm-glm-4-1v-9b-thinking",
 messages: [{ role: "user", content: "Hello!" }],
});

console.log(completion.choices[0].message.content);
curl https://api.siliconflow.cn/v1/chat/completions \
 -H "Content-Type: application/json" \
 -H "Authorization: Bearer YOUR_API_KEY" \
 -d '{
 "model": "thudm-glm-4-1v-9b-thinking",
 "messages": [{"role": "user", "content": "Hello!"}]
 }'

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Abbreviation

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Rate Limits & Constraints

Rate Limit 1,000 RPM, 50K TPM
Context Window 66K
Max Output Tokens 66K
Cost Free — since May 10, 2026
Credit Card Not required
OpenAI Compatible Yes — drop-in replacement

SiliconFlow Platform Limitations

  • China-hosted — high latency outside Asia-Pacific
  • Chinese phone number required for registration
  • Model availability may change based on local regulations

Features & Use Cases

Best For

ChatReasoning

Modality Support

text

SiliconFlow Highlights

  • 1,000 RPM, 50K TPM free tier
  • DeepSeek, Qwen, BGE models
  • Lowest latency for China-based users
  • OpenAI-compatible endpoint

Playground — Test THUDM/GLM-4.1V-9B-Thinking

Test THUDM/GLM-4.1V-9B-Thinking directly in your browser. Your API key is sent directly to SiliconFlow — never stored.

Model: THUDM/GLM-4.1V-9B-Thinking Get Key

🔒 Your key is never stored — sent directly to the model provider via our server proxy.

Ready to chat with THUDM/GLM-4.1V-9B-Thinking.

Frequently Asked Questions

How do I get an API key for THUDM/GLM-4.1V-9B-Thinking?

Sign up at SiliconFlow to get your API key. No credit card is required — just an email sign-up. Once you have the key, use the code snippets in the Quick Start section above.

Is THUDM/GLM-4.1V-9B-Thinking really free?

Yes. THUDM/GLM-4.1V-9B-Thinking is available on SiliconFlow's free tier and has been free since May 10, 2026. Rate limits apply: 1,000 RPM, 50K TPM. Always check the provider's terms for any changes to the free tier.

What are THUDM/GLM-4.1V-9B-Thinking's rate limits?

1,000 RPM, 50K TPM Context window: 66K. Max output: 66K. No credit card required.

What are the best free alternatives to THUDM/GLM-4.1V-9B-Thinking?

Popular free alternatives include inclusionAI: Ring-2.6-1T, Baidu Qianfan: CoBuddy (free), Owl Alpha. You can also browse all 147+ free models on our site.

More questions? See our full FAQ →

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