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Anthropic API Spend Estimator. Forecast Your Claude Bill.

The DM Champ Anthropic API Spend Estimator forecasts your monthly Claude Sonnet cost from DM volume and average message length - the raw Anthropic bill you'd pay on your own key with DM Champ BYOK (Pro+). Free, no signup. Powered by dmchamp.com.

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Token + cost forecast

Anthropic API spend estimator

Inputs
80,000 DMs
500 DMs200,000 DMs
Total inbound DMs the AI replies to.
120 chars
30 chars500 chars
320 chars
50 chars1,000 chars
Model
Results
Est. tokens / month
209M
202.4M in + 6.4M out
Anthropic Claude Sonnet / month
$703
Raw provider bill on your own key (BYOK)
DM ChampAnthropic direct
Per 1M input tokens
$3.00 (BYOK)$3.00
Per 1M output tokens
$15.00 (BYOK)$15.00
Monthly tokens (estimate)
208.8M208.8M
Provider cost
$703$703
Platform / inbox / AI agent
Included in your planBuild it yourself
Prompt caching
Native (~50% input save)Manual setup
FAQ retrieval included
Yes - vector + BM25Build it
🧮
At 80,000 DMs/mo on Claude Sonnet, you'd burn roughly 208.8M tokens for about $703/mo in Anthropic spend on your own key. With BYOK (Pro+) you connect your own Anthropic key and pay Anthropic directly for AI replies instead of spending DM Champ credits. Whether that works out cheaper than paying with credits depends on your volume and reply length - run your real numbers before switching. Native prompt caching typically cuts input cost by ~50%.
Related
BYOK feature →ChatGPT API vs BYOK →Build vs buy AI agent →AI sales stack cost →Pricing →
FAQ

Frequently Asked.

Within 10-15% for most real-world DM volume. The actual bill depends on chat history length, FAQ context size and prompt-caching hit rate. DM Champ's native caching usually cuts input cost by ~50%.
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