anthropic/claude-sonnet-5
Release date: 2026-07-01
1,000,000 context · $2.00/M input tokens · $10.00/M output tokens
Claude Sonnet 5 is Anthropic’s most capable Sonnet-class model, designed for frontier-level performance across coding, agent workflows, and professional tasks. It supports adaptive reasoning with selectable effort levels (low, medium, high, max, x-high), long-context processing up to large-scale documents, and multimodal inputs including text, images, and files. The model also includes updated tokenization and built-in safeguards for handling sensitive or high-risk dual-use scenarios.
Pricing
Pay-per-use
No upfront costs, pay only for what you use
Try the model
API Usage
Use the following code examples to integrate with our API:
import os
from openai import OpenAI
client = OpenAI(
api_key=os.environ["WAVESPEED_API_KEY"],
base_url="https://llm.wavespeed.ai/v1",
timeout=120.0,
max_retries=2,
)
try:
response = client.chat.completions.create(
model="anthropic/claude-sonnet-5",
messages=[{"role": "user", "content": "Hello!"}],
)
print(response.choices[0].message.content or "")
except Exception as exc:
raise SystemExit(f"LLM request failed: {exc}") from excModel Introduction
Anthropic: Claude Sonnet 5
Sonnet 5 is Anthropic's most capable Sonnet-class model, with frontier performance across coding, agents, and professional work. It supports adaptive thinking with selectable reasoning effort levels (low, medium, high, max,...
This model is imported from OpenRouter metadata and exposed through the WaveSpeed AI OpenAI-compatible API for chat completions and compatible application workflows.
Why It Looks Great
- text+image+file->text architecture for Text, Image, file to Text workloads
- 1000000 context window for long prompts, document analysis, and multi-turn workflows
- Competitive pricing at $2/$10 per million tokens
- Vision input support for image understanding and multimodal tasks
- Function calling and tool-use support for agentic application workflows
- Structured output support for JSON responses and schema-constrained generation
- Reasoning controls available through supported OpenRouter parameters
Key Features
- Context Window: 1000000 tokens
- Max Input: 872000 tokens
- Max Output: 128000 tokens
- Vision: Supported
- Function Calling: Supported
- Structured Outputs: Supported
- Image Generation: Not listed
- Audio Input: Not listed
- Supported Parameters: include_reasoning, max_completion_tokens, max_tokens, reasoning, response_format, stop, structured_outputs, tool_choice, tools, verbosity
Specifications
| Specification | Value |
|---|---|
| Provider | anthropic |
| Model Type | Chat Completions model |
| Architecture | text+image+file->text |
| Context Window | 1000000 tokens |
| Max Input | 872000 tokens |
| Max Output | 128000 tokens |
| Input | Text, Image, file |
| Output | Text |
| Vision | Supported |
| Function Calling | Supported |
| Structured Outputs | Supported |
| OpenRouter Created | July 1, 2026 |
How to Use
- Write your prompt - describe the task, provide context, and specify the desired output format.
- Submit - the model processes your request and returns the response.
API Integration
Base URL: https://llm.wavespeed.ai/v1
API Endpoint: chat/completions
Model ID: anthropic/claude-sonnet-5
API Usage
Python SDK
from openai import OpenAI
client = OpenAI(
api_key="YOUR_API_KEY",
base_url="https://llm.wavespeed.ai/v1"
)
response = client.chat.completions.create(
model="anthropic/claude-sonnet-5",
messages=[{"role": "user", "content": "Hello!"}]
)
print(response.choices[0].message.content)Notes
- Model: anthropic/claude-sonnet-5
- Provider: anthropic
- OpenRouter marks the top provider as moderated
- Endpoint availability and provider-specific routing may change on OpenRouter
Info
Supported Functionality
API Access Guide
Claude Sonnet 5 API
anthropic/claude-sonnet-5
Claude Sonnet 5 is Anthropic’s most capable Sonnet-class model, designed for frontier-level performance across coding, agent workflows, and professional tasks. It supports adaptive reasoning with selectable effort levels (low, medium, high, max, x-high), long-context processing up to large-scale documents, and multimodal inputs including text, images, and files. The model also includes updated tokenization and built-in safeguards for handling sensitive or high-risk dual-use scenarios.
Input
$2 /M
Output
$10 /M
Context
1000K
Max Output
128K
Vision
Supported
Tool Use
Supported
Try Claude Sonnet 5 on WaveSpeedAI
Access Claude Sonnet 5 through our unified API — OpenAI-compatible, no cold starts, transparent pricing.
Frequently Asked Questions about Claude Sonnet 5
How much does Claude Sonnet 5 cost via the API?+
Pricing on WaveSpeedAI: $2.00 per million input tokens and $10.00 per million output tokens. Prompt caching and batch processing are billed separately and reduce effective cost on long, repetitive workloads.
What is the context window of Claude Sonnet 5?+
Claude Sonnet 5 supports up to 1000K tokens of context with up to 128K tokens of output per request.
Is Claude Sonnet 5 OpenAI-compatible?+
WaveSpeedAI exposes Claude Sonnet 5 at https://llm.wavespeed.ai/v1 through the OpenAI-compatible Chat Completions interface. Most OpenAI SDK clients work by changing the base URL and API key; optional fields depend on the selected model.
How do I get started with Claude Sonnet 5?+
Sign in to WaveSpeedAI, create an API key in Access Keys, then send a request to https://llm.wavespeed.ai/v1/chat/completions with the model id shown above. Check the current model catalog for availability, capabilities, and pricing.