Complex reasoning focus
Grok 4.20 Reasoning is specialised for complex reasoning tasks.
Ask and write
Grok 4.20 Reasoning
Specialized Grok model optimized for complex reasoning tasks.
Made by xAI95 creditsper message Free
Opens the Agent studio with Grok 4.20 Reasoning ready to use. You will need a free account to run it.
What Grok 4.20 Reasoning makes, what it needs and what you get
What it makes
Ask and write
Answers questions and writes text in a conversation.
What you need
- Your message
What you get
A written reply
About Grok 4.20 Reasoning
Grok 4.20 Reasoning is a text generation model from xAI. Write a message and it answers with text. It is specialised for complex reasoning tasks.
Your message is the only thing you need to provide. Type it in the Prompt box (the hint reads Enter Your Message). There are no other fields to fill in. The answer is returned as text.
You can ask a question, set out a problem or describe a situation. Grok 4.20 Reasoning costs about 95 credits per run.
Other models for this job
Same job: ask and write. Compare before you choose.
Text Free Open
GPT-5 NanoAsk and write
Smallest and fastest GPT-5 model optimized for low-cost text generation and lightweight tasks.
OpenAI2 creditsper message
Text Free Open
GPT-4 TurboAsk and write
Faster and cheaper version of GPT-4 optimized for production workloads.
OpenAI250 creditsper message
Text Free Open
GPT-5.5Ask and write
The most capable GPT-5 series model with the highest reasoning quality.
OpenAI200 creditsper message
Text Free Open
GPT-5.4Ask and write
Advanced GPT-5.4 model delivering strong reasoning and coding performance.
OpenAI100 creditsper message
What it does well
Answers in writing
You type a message and the answer comes back as text.
How to use Grok 4.20 Reasoning
How It Works
How It Works
01
Select the model
Choose Grok 4.20 Reasoning from the text generation models.
02
Set out the problem
Write your question or problem in the Prompt box.
03
Check the answer
Send the message and read the written answer.
Tip Describe the situation fully in your message. Each run costs about 95 credits.
Good for
Working through a complex problem
Describe the problem in detail and ask for a reasoned answer.
Analysing a situation
Describe the situation in your message and ask for a written analysis.
Questions
Quick answers to help you get the most out of Grok 4.20 Reasoning in FunAI Studio.
1. What do I need to provide?
2. What do I get back?
3. How much does Grok 4.20 Reasoning cost?