Claude Sonnet 5

AI Claude Sonnet 3.5 is Anthropic's flagship model for coding and visual reasoning. It offers a 200k context window and computer use capabilities for complex agentic workflows, outperforming GPT-4o in technical tasks at low latency.

Modalities

Context

API Usage Examples

curl --request POST "https://gptproto.com/v1/chat/completions" \
  --header "Authorization: Bearer $GPTPROTO_API_KEY" \
  --header "Content-Type: application/json" \
  --data '{
    "model": "claude-sonnet-5",
    "messages": [
      {
        "role": "user",
        "content": "Hello"
      }
    ]
  }'

Claude Sonnet 5 pricing

Estimate a request with real work scenarios. GPTProto token pricing is 20% below official rates.

Cost calculator

Multi-turn agent with cached context.

Input tokens$1.6 / 1M$0.0024

Output tokens$8 / 1M$0.0064

Cache write tokens$2 / 1M$0.006

Cache read tokens$0.16 / 1M$0.004

Cost per request$0.0188

Top up

GPTProto vs official pricing.

Requests

You pay

20% off

$100

You receive$100.00

Save$25.00 (20%)vs Claude official

Key AI Claude Sonnet 3.5 Features

Discover why the AI Claude Sonnet 3.5 model is the preferred choice for technical developers and vision-based automation.

AI Elite Coding Agent

Outperforms GPT-4o on SWE-bench with a 49.0% score. This AI excels at refactoring, bug fixing, and complex architecture design for autonomous software engineering workflows.

AI Visual Reasoning

Ranked as the top-performing AI for vision benchmarks. It accurately transcribes text from low-quality images and interprets complex charts or technical diagrams with high fidelity.

AI Computer Use API

The first frontier AI model to navigate desktop environments. This AI can move cursors and click buttons to automate OS-based tasks and complex web navigation loops.

AI Prompt Caching

Reduce AI costs by 90% and latency by 80%. This AI feature allows developers to freeze large amounts of context like documentation or codebases for repetitive AI tasks.

Related Models

All Models

Model					Input → Output
Claude Sonnet 5Current		1M	$1.60 / $8.00 per 1M	$2.00 / $0.16 per 1M	Input: TextInput: Document Output: Text
Gemini 3.7 Flash		—	$0.45 / $2.25 per 1M	— / $0.04 per 1M	Input: TextInput: ImageInput: Document Output: Text
Grok 4.6		500K	$1.20 / $3.60 per 1M	— / $0.30 per 1M	Input: TextInput: Image Output: Text
Qwen3.8 Max		1M	$1.80 / $5.40 per 1M	$2.25 / $0.23 per 1M	Input: TextInput: ImageInput: VideoInput: Document Output: Text
Claude Opus 5		1M	$4.00 / $20.00 per 1M	$5.00 / $0.40 per 1M	Input: TextInput: ImageInput: Document Output: Text
Gemini 3.6 Flash		1.05M	$0.45 / $2.25 per 1M	— / $0.04 per 1M	Input: TextInput: ImageInput: Document Output: Text
Gemini 3.5 Flash Lite		1.05M	$0.18 / $1.50 per 1M	$0.02 / $0.02 per 1M	Input: TextInput: ImageInput: Document Output: Text
Kimi K3		1.05M	$2.70 / $13.50 per 1M	$0.27 / $0.27 per 1M	Input: TextInput: ImageInput: Document Output: Text
GPT 5.6 Luna		1.05M	$0.16 / $0.96 per 1M	$0.20 / $0.02 per 1M	Input: TextInput: ImageInput: Document Output: Text
GPT 5.6 Terra		1.05M	$1.60 / $9.60 per 1M	$2.00 / $0.16 per 1M	Input: TextInput: ImageInput: Document Output: Text
GPT 5.6 Sol		1.05M	$4.00 / $24.00 per 1M	$5.00 / $0.40 per 1M	Input: TextInput: ImageInput: Document Output: Text
Grok 4.5		500K	$1.20 / $3.60 per 1M	$0.30 / $0.30 per 1M	Input: TextInput: Image Output: Text
Minimax M3		1.05M	$0.48 / $0.96 per 1M	$0.10 / $0.10 per 1M	Input: TextInput: ImageInput: Document Output: Text
GLM 5.2		1.05M	$1.26 / $3.96 per 1M	$0.23 / $0.23 per 1M	Input: TextInput: ImageInput: Document Output: Text
Claude Fable 5		1M	$8.00 / $40.00 per 1M	$10.00 / $0.80 per 1M	Input: TextInput: Document Output: Text
Qwen3.7 Max		1M	$0.36 / $1.44 per 1M	$0.07 / $0.07 per 1M	Input: TextInput: Document Output: Text
Claude Opus 4.8 Thinking		1M	$4.00 / $20.00 per 1M	$5.00 / $0.40 per 1M	Input: TextInput: Document Output: Text
Claude Opus 4.8		1M	$4.00 / $20.00 per 1M	$5.00 / $0.40 per 1M	Input: TextInput: Document Output: Text
DeepSeek v4 Flash	—	1.05M	$0.14 / $0.28 per 1M	— / $0.0028 per 1M	Input: Text Output: Text
DeepSeek v4 Pro		1.05M	$1.04 / $2.09 per 1M	$0.0087 / $0.0087 per 1M	Input: Text Output: Text
Grok 4.3		1M	$0.75 / $1.50 per 1M	$0.12 / $0.12 per 1M	Input: TextInput: Image Output: Text
Kimi K2.6		262K	$0.85 / $3.60 per 1M	$0.14 / $0.14 per 1M	Input: TextInput: Document Output: Text
Claude Opus 4.7 Thinking		1M	$4.00 / $20.00 per 1M	$5.00 / $0.40 per 1M	Input: TextInput: Document Output: Text
Claude Opus 4.7		1M	$4.00 / $20.00 per 1M	$5.00 / $0.40 per 1M	Input: TextInput: Document Output: Text
GLM 5.1		205K	$1.26 / $3.96 per 1M	$0.23 / $0.23 per 1M	Input: TextInput: Document Output: Text
GLM 5 Turbo		203K	$1.08 / $3.60 per 1M	$0.22 / $0.22 per 1M	Input: TextInput: Document Output: Text
DeepSeek v3.2		164K	$0.17 / $0.25 per 1M	$0.02 / $0.02 per 1M	Input: Text Output: Text
Minimax M2.5		205K	$0.24 / $0.96 per 1M	$0.30 / $0.02 per 1M	Input: TextInput: Document Output: Text
Kimi K2.5		262K	$0.54 / $2.70 per 1M	$0.09 / $0.09 per 1M	Input: TextInput: Document Output: Text
Qwen Turbo		—	$0.04 / $0.18 per 1M	$0.009 / $0.009 per 1M	Input: Text Output: Text
Doubao Seed 1.6 Thinking 250715		262K	$0.10 / $0.97 per 1M	—	Input: TextInput: Image Output: Text
Doubao Seed 1.6 Thinking 250615		262K	$0.10 / $0.97 per 1M	—	Input: TextInput: Image Output: Text
Doubao Seed 1.6 Flash 250615		262K	$0.02 / $0.18 per 1M	—	Input: TextInput: Image Output: Text

AI Claude Sonnet 3.5 FAQ

Everything you need to know about implementing the AI Claude Sonnet 3.5 model for coding, vision, and automation.

Is AI Claude Sonnet 3.5 better for coding than GPT-4o?

Yes, this AI outperforms GPT-4o in software engineering benchmarks. It achieved 49.0% on SWE-bench Verified compared to 33.4% for GPT-4o. This AI excels at refactoring, bug fixing, and multi-step architecture design, making it the preferred AI for autonomous coding agents and deep repository analysis.

How does AI prompt caching reduce costs?

This AI feature allows you to freeze large blocks of data, like an entire codebase or legal library, in the AI cache. Subsequent AI requests that use this cached context cost up to 90% less and process 80% faster. It is an essential AI tool for developers running high-frequency AI tasks on the same large datasets.

Can this AI process PDF documents and charts?

Absolutely. This AI converts each PDF page into an AI-readable image and text block. This multimodal AI approach allows it to analyze visual elements like financial charts, medical diagrams, and technical tables. For the best AI results, ensure your AI requests use clear, standard fonts and upright page orientations.

What is the AI computer use capability?

This AI is the first frontier model to support 'computer use' via API. This AI can navigate desktop environments, move cursors, and click buttons to automate browser-based or OS-based tasks. It transforms the AI from a simple chatbot into an active AI agent capable of completing complex, multi-step administrative workflows.

How do I migrate my AI application to Claude 3.5?

Migration is simple because GPTProto.com offers an AI-compatible layer. You just need to update your model parameter to 'claude-3-5-sonnet'. Because this AI follows system instructions with high precision, you may find that you can shorten your AI prompts while achieving more nuanced, human-like AI responses.

Does this AI use my data for training?

No. Data sent via our AI aggregation platform to the Claude 3.5 Sonnet model is strictly protected. Your AI inputs and AI outputs are not used to train the underlying AI models, ensuring your enterprise AI data remains confidential and secure according to standard zero-retention policies.