Claude Sonnet 5 API
The best combination of speed and intelligence in the Claude 5 family. A 1M context window at $3/$15 — the recommended Claude for most use cases.
💰 Save up to 70% vs official Anthropic pricingClaude Sonnet 5 — cheaper than the official Anthropic API
Access Claude Sonnet 5 through AI API Hub and pay less per token. Same OpenAI-compatible endpoint, lower cost.
Technical Specifications
| Provider | Anthropic |
| Model Family | Claude Sonnet 5 |
| Release Date | 2026-07 |
| Context Window | 1M |
| Max Output Tokens | 131,072 |
| Input Price | $3.00 / 1M tokens |
| Output Price | $15.00 / 1M tokens |
| Vision Support | Yes ✓ |
| Function Calling | Yes ✓ |
| JSON Mode | No |
| Streaming | Yes ✓ |
| Fine Tuning | Not Available |
| Status | Active ✓ |
Overview
Claude Sonnet 5 is Anthropic's current sonnet model, released in 2026-07. The best combination of speed and intelligence in the Claude 5 family. A 1M context window at $3/$15 — the recommended Claude for most use cases.
For developers, the headline numbers are a 1M context window and up to 131,072 output tokens per response — enough headroom for best speed-to-quality and 1m context without chunking your input. Priced at $3.00/1M input and $15.00/1M output, it sits in the premium tier — best reserved for tasks where quality justifies the spend.
On the capability side, Claude Sonnet 5 exposes 4 features: Vision, Tool Use, Adaptive Thinking, Streaming. Note that fine-tuning isn't supported — you'll work with the base model. Vision support means you can pass images alongside text, handy for document parsing or UI automation.
The practical appeal of routing Claude Sonnet 5 through AI API Hub is simplicity: one OpenAI-compatible endpoint, USDT & USDC payments, no credit card, and you're calling the API in under 30 seconds — just swap your base URL.
What Makes Claude Sonnet 5 Different
How Claude Sonnet 5 is used
Claude Sonnet 5 is used for agentic workflows combining visual understanding with action — document processing pipelines that extract data and call APIs, visual Q&A systems, and multimodal agents. Tool calling enables it to trigger external functions based on what it sees in images.
Pricing position within Anthropic
Claude Sonnet 5 sits in the middle of Anthropic's pricing at $3.00/1M input — 43% below the lineup average ($1.00 cheapest, $10.00 most expensive). 1 sibling cost less, 5 cost more. This mid-tier positioning makes it a sensible default when you're unsure which variant to pick.
Claude Sonnet 5's role in the lineup
Within Anthropic's lineup, Claude Sonnet 5 is a mid-tier option — balanced between cost and capability. The sonnet family has 2 active variants, and Claude Sonnet 5 occupies the lower end. This makes it a safe default for production workloads where you're not sure which tier to pick.
Real-world use cases
Real-world deployments: document processing pipelines (read invoice → extract fields → call accounting API), visual Q&A systems, and multimodal agents that act on what they see. Claude Sonnet 5 handles the full see-decide-act loop in a single model call.
vs sibling models
What makes Claude Sonnet 5 different from sibling models: compared to Claude Fable 5 ($7.00/1M more expensive, same 1M context); Claude Mythos 5 ($7.00/1M more expensive, same 1M context); Claude Opus 5 ($2.00/1M more expensive, same 1M context). Choose Claude Sonnet 5 when vision input is needed.
API Examples
Python
from openai import OpenAI
client = OpenAI(
api_key="YOUR_API_KEY",
base_url="https://api.apiyihe.org/v1"
)
response = client.chat.completions.create(
model="claude-sonnet-5",
messages=[
{"role": "user", "content": "Hello"}
]
)
print(response.choices[0].message.content)JavaScript / Node.js
import OpenAI from "openai";
const client = new OpenAI({
apiKey: process.env.API_KEY,
baseURL: "https://api.apiyihe.org/v1"
});
const response = await client.chat.completions.create({
model: "claude-sonnet-5",
messages: [
{ role: "user", content: "Hello" }
]
});
console.log(response.choices[0].message.content);cURL
curl https://api.apiyihe.org/v1/chat/completions \
-H "Content-Type: application/json" \
-H "Authorization: Bearer YOUR_API_KEY" \
-d '{
"model": "claude-sonnet-5",
"messages": [
{"role": "user", "content": "Hello"}
]
}'Supported Features
| Vision / Image Input | ✅ Supported |
| Audio / Voice Input | ❌ Not Available |
| Function Calling | ✅ Supported |
| JSON Mode | ❌ Not Available |
| Streaming | ✅ Supported |
| Fine-Tuning | ❌ Not Available |
| Multimodal | ❌ Not Available |
Benchmark Scores
| Benchmark | Score |
|---|---|
| MMLU | Not Publicly Available |
| GPQA | Not Publicly Available |
| SWE-Bench | Not Publicly Available |
| HumanEval | Not Publicly Available |
| GSM8K | Not Publicly Available |
| MATH | Not Publicly Available |
| MMMU | Not Publicly Available |
Pricing History
Claude Sonnet 5 was released in 2026-07 by Anthropic and is currently publicly available via AI API Hub.
Current Pricing: $3.00 per 1M input tokens · $15.00 per 1M output tokens. Pay-as-you-go with no minimum commitment.
Pricing Model: Token-based billing (pay per use). No subscription fees. No hidden costs.
💡 Anthropic occasionally updates pricing. AI API Hub reflects current pricing in real-time. All prices in USD. Pay with USDT or USDC — no currency conversion fees.
Compare Alternatives
Frequently Asked Questions
What is Claude Sonnet 5?
Claude Sonnet 5 is Anthropic's current sonnet model. The best combination of speed and intelligence in the Claude 5 family. A 1M context window at $3/$15 — the recommended Claude for most use cases. It offers a 1M context window and supports Vision, Tool Use, Adaptive Thinking. You can access it through AI API Hub using USDT or USDC — no credit card required.
How much does Claude Sonnet 5 cost?
Claude Sonnet 5 is priced at $3.00 per 1M input tokens and $15.00 per 1M output tokens, billed pay-as-you-go with no minimum. Through AI API Hub you can start with as little as $5 and scale from there.
Claude Sonnet 5 vs GPT-5.6 Sol?
They're built for different jobs. Claude Sonnet 5 costs $3.00/1M input with a 1M window; GPT-5.6 Sol runs $5.00/1M input with 1M. Claude Sonnet 5 is the more cost-effective pick and still brings best speed-to-quality. See the full side-by-side at /compare/claude-sonnet-5-vs-gpt-5.6-sol/.
Claude Sonnet 5 context window?
Claude Sonnet 5 has a 1M context window, capable of processing up to 1,048,576 tokens in a single request. Maximum output tokens: 131,072.
Does Claude Sonnet 5 support function calling?
Yes, Claude Sonnet 5 supports function/tool calling, allowing you to define functions that the model can invoke. This enables AI agents, API integrations, and structured data extraction.
Is Claude Sonnet 5 multimodal?
Partially — Claude Sonnet 5 supports vision (image input) but not native audio processing.
Claude Sonnet 5 API rate limits?
Claude Sonnet 5 rate limits: 5K RPM. Higher tier plans offer increased throughput. For high-volume production use, consider Anthropic's faster variant models.
How to access Claude Sonnet 5 API?
Access Claude Sonnet 5 through AI API Hub: (1) Register at api.apiyihe.org/register?aff=8JZC, (2) Deposit USDT/USDC, (3) Get your API key instantly, (4) Use the OpenAI-compatible endpoint https://api.apiyihe.org/v1 with model name "claude-sonnet-5". Start building in under 30 seconds.