Claude Sonnet 4.5 API

Model ID: anthropic/claude-sonnet-4.5 · Anthropic · Billed per token

Claude Sonnet 4.5 pricing

AibermOfficial
Input$2.39 / 1M tokens$3.00
Output$11.96 / 1M tokens$15.00
Cache read$0.239 / 1M tokens

Prices in USD. About 20% below the official price. Pay as you go, no minimum spend.

Get an API key · Read the docs

How to call Claude Sonnet 4.5

Use your Aiberm API key, set the base URL, and pass anthropic/claude-sonnet-4.5 as the model name.

Supported request formats:

curl https://aiberm.org/v1/chat/completions \
  -H "Authorization: Bearer $AIBERM_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model": "anthropic/claude-sonnet-4.5", "messages": [{"role": "user", "content": "Hello"}]}'

Use Claude Sonnet 4.5 in your tools

FAQ

How much does the Claude Sonnet 4.5 API cost?

On Aiberm, Claude Sonnet 4.5 (anthropic/claude-sonnet-4.5) costs $2.39 per 1M input tokens and $11.96 per 1M output tokens, compared with the official $3.00 / $15.00 — about 20% less. You pay only for the tokens you use, with no minimum spend.

How do I call Claude Sonnet 4.5 through Aiberm?

Set the base URL to https://aiberm.org, use anthropic/claude-sonnet-4.5 as the model name, and authenticate with your Aiberm API key. Supported request formats: Anthropic Messages, OpenAI Chat Completions.

Does Claude Sonnet 4.5 support prompt caching?

Yes. Cached input tokens are billed at $0.239 per 1M tokens.

Can I use Claude Sonnet 4.5 in Claude Code, OpenCode or OpenClaw?

Yes. Add Aiberm as a provider in Claude Code, OpenCode, OpenClaw with the base URL and your API key, then select anthropic/claude-sonnet-4.5. Each tool has a step-by-step guide in the Aiberm docs.

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