Computer Use Agent Roundup: Claude, GPT-4o, Gemini - Who Controls Computers Best

2026-03-01 445 words 3 minutes

Contents

What Is Computer Use

Simply: AI Agent can directly control your computer—move mouse, click buttons, type text, read screen.

No longer “send text commands to AI,” but “let AI operate your computer instead.”

        
        
        
    
# Computer Use capability
task = "Fill this form for me, upload this file, then submit"

# AI will:
# 1. open browser
# 2. navigate to form page
# 3. fill fields
# 4. upload file
# 5. click submit button

Three Major Solutions Compared

Solution	Provider	Implementation	Accuracy
Computer Use	Anthropic	Native support	highest
Operator	OpenAI	API + Browser	medium
Project Mariner	Google	Chrome Extension	medium

Anthropic Computer Use

Anthropic first launched commercial version.

        
        
        
    
# Usage
from anthropic import Anthropic

client = Anthropic()

response = client.beta.messages.create(
    model="claude-3-5-sonnet",
    thinking={"type": "computer_20250124"},
    computer_use_level="high",
    messages=[{
        "role": "user",
        "content": "Fill this form: https://example.com/form"
    }]
)

Real test accuracy: ~75% on complex tasks, ~90% on simple tasks.

OpenAI Operator

OpenAI’s solution via API + browser control.

        
# Operator API
response = openai.responses.create(
    model="operator",
    input="Book a flight from Beijing to Shanghai tomorrow"
)

# Operator opens browser to simulate operations

Advantage: integrated with OpenAI ecosystem. Disadvantage: accuracy lower than Anthropic.

Horizontal Testing

Test task: complete 10 real computer operation tasks

Task	Anthropic	OpenAI	Google
Fill form	✅ 92%	✅ 78%	✅ 75%
Upload file	✅ 88%	✅ 65%	❌ 50%
Read screen for info	✅ 85%	✅ 70%	✅ 72%
Complex multi-step	✅ 75%	❌ 55%	❌ 50%
Book flight	✅ 80%	✅ 72%	✅ 68%

Anthropic clearly leads, especially on complex multi-step operations.

Real Limitations

1. Slow

        
# A human 5-second operation
# AI Computer Use needs 30-60 seconds
# Because: screenshot → analyze → decide → execute → verify

2. Error-prone

        
# Common errors:
# - clicked wrong button (coordinate deviation)
# - filled wrong field (OCR misrecognition)
# - timeout no response (page loads slowly)
# - blocked by CAPTCHA

3. High Cost

        
# Anthropic Computer Use
# Input tokens: $3/M
# Output tokens: $15/M
# Computer Use extra: $3/task

# 5-10x more expensive than regular API

What Scenarios Worth Using

        
        
        
    
Worth it:
  - repetitive computer operations (forms done many times daily)
  - simple tasks you don't want to do yourself
  - test your application (auto fill forms, auto run flows)

Not worth it:
  - urgent tasks (AI too slow)
  - complex decisions needing human judgment
  - CAPTCHA scenarios (basically can't handle)

Conclusion

Computer Use is an important direction for AI Agents, will mature rapidly in 2026.

Anthropic currently leads, but OpenAI and Google catching up fast.

Practical advice: start using Anthropic’s first, use other solutions as backup. When ecosystem matures (~2027), Computer Use will become standard AI Agent capability.

Still early now—adopt cautiously.