500k Token Context
Analyze entire libraries of documentation with 500k context. This ai Claude Opus 4.1 thinking feature ensures near-perfect recall for complex technical audits and legal discovery.
claude-opus-4-1-20250805-thinking / file-analysis
Claude 4 Opus (v4.1) is Anthropic's flagship ai model featuring a dedicated thinking mode. With a 500k context window and elite reasoning, it solves complex coding and scientific challenges where logic is non-negotiable for developers.
$ 12
$ 15
file
$ 60
$ 75
text
API
File Analysis
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-thinking",
"max_tokens": 1024,
"messages": [
{
"role": "user",
"content": [
{
"type": "text",
"text": "Please analyze this PDF document and provide a summary of its content"
},
{
"type": "document",
"source": {
"type": "url",
"url": "https://tos.gptproto.com/resource/gptproto.pdf"
}
}
]
}
]
}'Claude Opus 4.1 Thinking Key Features
Advanced ai Claude Opus 4.1 thinking features designed for professional developers requiring zero-defect logical consistency and massive data processing capabilities.
Native Multimodal Video
Process video and images natively. The ai Claude Opus 4.1 thinking engine can explain visual failures or chart trends with temporal awareness and technical depth.
Agentic Reliability
Built for autonomous agents, this ai Claude Opus 4.1 thinking model shows a 30% improvement in tool-call accuracy, serving as a reliable central controller for complex workflows.
Active Reasoning Budget
The model utilizes an internal reasoning budget to deliberate before responding. This reduces logical errors in multi-step problems, making it a premier ai Claude Opus 4.1 thinking solution.
How to Get a claude opus 4.1 20250805 thinking API Key
Getting a claude opus 4.1 20250805 thinking 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 thinking API key than going direct, and one key works across every model on the platform. Full claude opus 4.1 20250805 thinking 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 thinking, 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 thinking.
Make your first API call
Use your API key with our sample code to send a request to claude opus 4.1 20250805 thinking via GPT Proto and see instant AI-powered results.
Claude Opus 4.1 Thinking FAQ
What is the ai Claude Opus 4.1 thinking mode?
Thinking mode is a reasoning process where the ai Claude Opus 4.1 uses a token budget to 'think' internally before providing an answer. This significantly reduces logical errors in math, coding, and scientific synthesis by allowing the model to self-correct its logic during the generation process.
How does the Files API work with this ai model?
The Files API allows you to upload documents once and reference them via a file_id in multiple ai Claude Opus 4.1 thinking requests. This is ideal for large datasets, long PDFs, or codebases, as it eliminates the need to re-upload content for every prompt, saving both time and bandwidth.
What are the latency tradeoffs for this ai?
Because the ai Claude Opus 4.1 thinking model performs deep internal reasoning, the Time-to-First-Token (TTFT) is higher than standard models, typically 2–5 seconds for a 1024-token budget. It is optimized for accuracy and complex problem-solving rather than real-time chat speed.
Can this ai handle video and PDF inputs?
Yes, Claude 4 Opus v4.1 is fully multimodal. It can synthesize information from video (up to 60fps), high-resolution images, and complex PDFs. This allows the ai Claude Opus 4.1 thinking engine to perform temporal reasoning, such as identifying the cause of a failure in a mechanical video.
What is the context window for this ai model?
The ai Claude Opus 4.1 thinking model features a 500,000-token context window. Anthropic has optimized this for 'perfect' recall, meaning the model can retrieve specific facts from the middle of a massive dataset (Needle-in-a-Haystack) with industry-leading precision.
How is the thinking process billed for this ai?
Thinking tokens are billed at the same rate as standard output tokens ($75.00 per 1M tokens). However, because the ai Claude Opus 4.1 thinking process often resolves problems in a single turn that would normally require multiple iterations, it can actually reduce the total project spend.
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