Anthropic · Model
Claude Sonnet 4.6 Free API
FreeClaude Sonnet 4.6 Free answers at api.apmix.ai under the id below — one key and one monthly plan, on the OpenAI and Anthropic wire formats your tools already speak. No separate Anthropic account, no per-provider bill.
Model id
anthropic/claude-sonnet-4-6-freeStarterProMaxAt a glance
- Provider
- Anthropic
- Included in
- Starter, Pro, Max — from $4.99/month
- Weighted-token cost
- 0.5× — a 1,000-token exchange costs 500 weighted tokens
- Context window
- 200K tokens
- Free trial
- Yes — the 25M free tokens every new account gets can be spent here
Call Claude Sonnet 4.6 Free
Set the model to claude-sonnet-4-6-free in any OpenAI- or Anthropic-compatible client. Both base URLs accept the same apmix key.
OpenAI-compatible · Chat Completions
curl https://api.apmix.ai/v1/chat/completions \
-H "Authorization: Bearer apx_live_YOUR_KEY" \
-H "Content-Type: application/json" \
-d '{"model": "claude-sonnet-4-6-free", "messages": [{"role": "user", "content": "Hello"}]}'Anthropic-compatible · Messages
curl https://api.apmix.ai/v1/messages \
-H "x-api-key: apx_live_YOUR_KEY" \
-H "anthropic-version: 2023-06-01" \
-H "Content-Type: application/json" \
-d '{"model": "claude-sonnet-4-6-free", "max_tokens": 1024, "messages": [{"role": "user", "content": "Hello"}]}'Questions about Claude Sonnet 4.6 Free
- Is Claude Sonnet 4.6 Free free on apmix?
- Yes. Every new account gets 25M free tokens that can be spent on Claude Sonnet 4.6 Free (claude-sonnet-4-6-free) and the other free models, with no daily limit and no expiry date. No card needed.
- Which plan includes Claude Sonnet 4.6 Free?
- Starter, Pro, Max. Each plan is a monthly allowance of weighted tokens shared across every model and every key; Claude Sonnet 4.6 Free counts at 0.5× per token.
- How do I use Claude Sonnet 4.6 Free in Claude Code, Codex CLI or Cursor?
- Point the tool at apmix — https://api.apmix.ai/v1 for OpenAI-compatible clients, https://api.apmix.ai for Anthropic-compatible ones — with your apmix key, and set the model to claude-sonnet-4-6-free. The Docs page has copy-paste setup for each tool.