LLM cost calculator
Estimate monthly LLM API spend across providers. See what the same workload costs through Spawnpay's universal proxy ($0.001 per upstream 2xx) and what Stripe-style card billing would add. No signup, all client-side.
Inputs
Monthly cost
Calls / month—
Tokens (in)—
Tokens (out)—
Provider model spend—
Spawnpay proxy fee ($0.001 × calls)—
Total via Spawnpay—
Stripe baseline (2.9% + $0.30/tx)—
Spawnpay savings vs Stripe—
"Stripe baseline" assumes per-call card settlement, the apples-to-apples comparison for true pay-as-you-go. Subscription bundling avoids the $0.30 floor but loses per-call granularity. Numbers are public list prices, your contract may differ.
List prices used
| Provider · model | Input ($/MTok) | Output ($/MTok) |
|---|---|---|
| OpenAI · gpt-4o-mini | $0.15 | $0.60 |
| OpenAI · gpt-4o | $2.50 | $10.00 |
| Anthropic · Claude Haiku 4.5 | $1.00 | $5.00 |
| Anthropic · Claude Sonnet 4.6 | $3.00 | $15.00 |
| Anthropic · Claude Opus 4.7 | $15.00 | $75.00 |
| Groq · Llama-3.1-70B | $0.59 | $0.79 |
| Mistral · Mistral Large | $2.00 | $6.00 |
| DeepSeek · V3 | $0.27 | $1.10 |
| Together · Llama-3.3-70B Turbo | $0.88 | $0.88 |
Try it for $7 — no card, no card form.
Every new spk_ wallet starts with $7 USDC credit. Use it to validate before committing. Top up with USDC on Base L2 when ready.