Claude Sonnet 5 API
Access Claude Sonnet 5 through a simple, OpenAI-compatible API. Change one URL and one key — your existing code works immediately. No SDK changes needed.
Claude Sonnet 5 Pricing
| Token Type | Qubax | Retail | Save |
|---|---|---|---|
| Input (per 1M) | $0.499 | $2.00 | 75% |
| Output (per 1M) | $1.99 | $10.00 | 80% |
At $0.499/1M input tokens, Claude Sonnet 5 is one of the most affordable APIs in its class.
Why use Claude Sonnet 5 API on Qubax?
- ⚡Point your OpenAI SDK at https://api.qubax.ai/v1
- ⚡Use model ID: claude-sonnet-5
- ⚡Generate API keys starting with qbx_live_
- ⚡Full streaming, function calling, and vision support
About Claude Sonnet 5
Claude Sonnet 5 is Anthropic's flagship Sonnet — a 1M-token context window with adaptive thinking and selectable reasoning effort (low/medium/high/max/x-high). Released 2026-06-30. It supports a 1M-token context window and up to 64K output tokens per request. Native capabilities include reasoning, vision, tool calling, structured output, streaming, context caching. On Qubax it is served by 455 independent sellers, so pricing stays competitive and uptime stays high.
Claude Sonnet 5 API Access — code example
from openai import OpenAI
# Only two lines change vs the official API:
client = OpenAI(
base_url="https://api.qubax.ai/v1",
api_key="qbx_live_YOUR_KEY",
)
response = client.chat.completions.create(
model="claude-sonnet-5",
messages=[{"role": "user", "content": "Hello, Claude Sonnet 5!"}],
)
print(response.choices[0].message.content)More Anthropic models on Qubax
Get started in 60 seconds
- 1Create a free account at qubax.ai/register
- 2Add crypto credits (200+ coins, $3 minimum, credits never expire)
- 3Generate an API key and set your base URL to
https://api.qubax.ai/v1 - 4Use model ID
claude-sonnet-5— done!
Claude Sonnet 5 API Access FAQ
How much does Claude Sonnet 5 cost API?
On Qubax, Claude Sonnet 5 costs $0.499 per 1M input tokens and $1.99 per 1M output tokens. 75% cheaper than OpenRouter. Pay with 200+ cryptocurrencies.
Can I use Claude Sonnet 5 with my existing tools?
Yes. Qubax is fully OpenAI-compatible. Change your base URL to api.qubax.ai/v1 and use your Qubax key. Works with Cline, Cursor, OpenCode, LangChain, and any OpenAI SDK.
Do I need a credit card?
No. Qubax accepts 200+ cryptocurrencies. No credit card, no KYC.