TokenSpend
Get API key
All models

Anthropic

Claude Sonnet 4.6

anthropic/claude-sonnet-4-6images
Try in playgroundGet API key

Input

$3

per M tokens

Output

$15

per M tokens

Cache read

$0.3

per M tokens

Context

1,000K

tokens

Pricing

Input$3 / M tokens
Output$15 / M tokens
Cache read$0.3 / M tokens
RoutingFree

Provider list price. BYOK requests bill on your own provider account; managed credits draw down at exactly these rates. No markup, no request fee. Every request is metered per engineer and joined to the work it shipped.

Run it

Claude Code

export ANTHROPIC_BASE_URL=https://api.tokenspend.dev
export ANTHROPIC_API_KEY=$TOKENSPEND_RAIL_KEY
export ANTHROPIC_MODEL=anthropic/claude-sonnet-4-6

curl

curl https://api.tokenspend.dev/v1/messages \
  -H "content-type: application/json" \
  -H "x-api-key: $TOKENSPEND_RAIL_KEY" \
  -d '{"model":"anthropic/claude-sonnet-4-6","max_tokens":256,"messages":[{"role":"user","content":"hello"}]}'

Python · OpenAI SDK

from openai import OpenAI

client = OpenAI(base_url="https://api.tokenspend.dev/v1", api_key=os.environ["TOKENSPEND_RAIL_KEY"])
resp = client.chat.completions.create(
    model="anthropic/claude-sonnet-4-6",
    messages=[{"role": "user", "content": "hello"}],
)

Both dialects reach every model: send Anthropic-shaped requests or OpenAI-shaped requests and the rail translates. Prompts and responses are never stored.