This calculator is a model, not a meter. It uses public pricing pages and a few reasonable assumptions about token use to give you a ballpark monthly bill.
Token estimates per intensity:
Light≈ 50K input + 10K output tokens / dayMedium≈ 200K input + 40K output tokens / dayHeavy≈ 500K input + 100K output tokens / day
Per-token cost (per 1M tokens):
- Claude Opus 4:
$15 in / $75 out - Claude Sonnet 4:
$3 in / $15 out - Claude Haiku 3.5:
$0.80 in / $4 out - GPT-4o:
$2.50 in / $10 out - GPT-4:
$30 in / $60 out - GPT-4o-mini:
$0.15 in / $0.60 out - Gemini 2.5 Pro:
$1.25 in / $10 out - DeepSeek V3:
$0.27 in / $1.10 out
Flat-rate tools (Cursor, Copilot, Windsurf) charge a fixed monthly fee regardless of usage within their tier. We add them as-is. The business tier of Copilot is $39/mo; the individual tier is $10/mo.
Open-source tools (Aider, Continue.dev) are free themselves, but you still pay the underlying model API. We treat them as API passthroughs — the cost is whatever model you point them at.
Self-hosting math:
- Electricity:
watts × hours/day × 30 / 1000 × $/kWh - Hardware amortization:
cost / (years × 12) - Local capability is not identical to cloud — a 70B local model is roughly GPT-4-class on most coding tasks but won't match Claude Opus 4. The "savings" here is a cost ceiling; in practice you may use both.
All math runs in your browser. Nothing is uploaded. You can verify each line in the per-tool and per-category tables above.