Near-Zero Hallucination Rate
Claude features state-of-the-art refusal mechanisms for out-of-distribution queries, making Claude suitable for legal and medical synthesis.
claude-opus-4-1-20250805 / web-search
Claude Opus 4.1 code optimizes multi-file refactoring and architectural planning. With a 200k context window and Computer Use 2.0, this model handles high-stakes reasoning and agentic workflows with industry-leading precision and reliability.
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API
Web Search
curl --request POST "https://gptproto.com/v1/messages" \
--header "Authorization: Bearer $GPTPROTO_API_KEY" \
--header "Content-Type: application/json" \
--header "anthropic-version: 2023-06-01" \
--data '{
"model": "claude-opus-4-1-20250805",
"max_tokens": 1024,
"messages": [
{
"role": "user",
"content": "What'\''s the weather in NYC?"
}
],
"tools": [
{
"type": "web_search_20250305",
"name": "web_search",
"max_uses": 5
}
]
}'Mastering Complex Tasks with Claude 4.1 Opus
Claude 4.1 Opus provides industry-leading benchmarks and features for developers and researchers requiring elite AI performance.
Deep Technical Coding
Claude manages multi-file refactoring and architectural planning, reaching 54.0% on SWE-bench Verified for elite software engineering.
Visual Logic & Video Analysis
Claude analyzes complex charts, architectural blueprints, and sequential video frames with high spatial accuracy for multimodal projects.
Advanced Cognitive Reasoning
Claude achieves 91.2% on MMLU, outperforming competitors in logical deduction and multi-step problem solving for high-stakes enterprise tasks.
How to Get a claude-opus-4-1-20250805 API Key
Getting a claude-opus-4-1-20250805 API key takes four steps and a few minutes. Create a free GPTProto account, add credits, generate your key, and make your first call — at $12 / $60 it's a cheaper claude-opus-4-1-20250805 API key than going direct, and one key works across every model on the platform. Full claude-opus-4-1-20250805 Documentation is in the docs.
Sign up
Create your free GPT Proto account to begin. You can set up an organization for your team at any time.
Top up
Your balance can be used across all models on the platform, including claude-opus-4-1-20250805, giving you the flexibility to experiment and scale as needed.
Generate your API key
In your dashboard, create an API key — you'll need it to authenticate when making requests to claude-opus-4-1-20250805.
Make your first API call
Use your API key with our sample code to send a request to claude-opus-4-1-20250805 via GPT Proto and see instant AI-powered results.
Claude 4.1 Opus & Code Integration FAQ
Common questions regarding the Claude 4.1 Opus model, its coding capabilities, and how Claude handles complex agentic workflows.
How does Claude 4.1 Opus handle coding tasks?
Claude 4.1 Opus is designed for deep technical coding, specifically multi-file refactoring and long-term architectural planning. With a 92.5% HumanEval score and 54% on SWE-bench Verified, Claude outperforms previous iterations in identifying logical bugs and managing complex dependencies. Claude is particularly effective for autonomous engineering agents that require high reasoning depth rather than raw token generation speed for development.
What is the context window for Claude 4.1 Opus?
Claude features a massive 200,000-token context window, enabling Claude to process dense documentation, long legal briefs, or extensive codebases. Through the GPTProto.com API, you can utilize Claude with prompt caching to significantly reduce costs—up to 90%—when reusing this large context across multiple queries. This makes Claude ideal for iterative research and complex document synthesis where background information remains static.
Does Claude support multimodal inputs?
Yes, Claude 4.1 Opus is fully multimodal. Claude natively supports image analysis, video frame interpretation, and PDF parsing. Claude and its visual logic excel at interpreting complex charts, architectural blueprints, and technical diagrams with high spatial accuracy. This allows Claude users to combine visual data with textual reasoning for sophisticated use cases like financial risk assessment or scientific research discovery.
How is Claude pricing structured for GPTProto users?
Claude input tokens are priced at $15.00 per million, and Claude output tokens at $75.00 per million. GPTProto.com offers a unified billing experience, giving you access to Claude alongside hundreds of other models via a single API key. You also benefit from Claude prompt caching discounts ($0.75 per 1M read) and a 50% discount on Claude asynchronous batch processing for non-urgent tasks that can be completed within a 24-hour window.
Is data sent to Claude 4.1 used for training?
No. Data security is a core pillar of our service. Any data sent to the Claude 4.1 Opus endpoint via GPTProto.com is not used by us or Anthropic for model training. This ensures that sensitive intellectual property, such as proprietary Claude code or confidential legal documents, remains private and secure, meeting the stringent compliance requirements of enterprise-level software development, medical research, and financial analysis.
What is 'Computer Use 2.0' in Claude 4.1?
Computer Use 2.0 is an optimization that allows Claude to interact with digital interfaces more reliably. In Claude 4.1 Opus, tool-invocation errors have been reduced by 25% compared to previous versions. This makes Claude a powerful engine for agentic workflows where Claude must navigate software, execute commands, or manage multi-step technical processes autonomously while maintaining high logical consistency throughout the session.
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