DeepSeek
DeepSeek cost & gross margin per customer
DeepSeek is among the cheapest capable models, with very low input and output prices. It's one of the safest choices for keeping gross margin healthy on a flat-priced AI SaaS.
DeepSeek's pricing is among the lowest of any capable model, with both input and output cheap. On flat pricing it gives you the widest headroom before any customer turns unprofitable.
Input
$0.3 /Mtok
Output
$1.2 /Mtok
Margin per customer by usage & plan price
How DeepSeek margin holds up as a customer's usage rises, across common subscription prices.
| Usage / mo | LLM cost | $19/mo | $29/mo | $49/mo | $79/mo |
|---|---|---|---|---|---|
| Light | $0.07 | 99.6% | 99.8% | 99.9% | 99.9% |
| Typical | $0.33 | 98.3% | 98.9% | 99.3% | 99.6% |
| Heavy | $1.32 | 93.1% | 95.4% | 97.3% | 98.3% |
| Power user | $5.40 | 71.6% | 81.4% | 89% | 93.2% |
Margin % per customer at each plan price. Token prices indicative, as of 2026-06.
Of the $0.33 a typical customer costs on DeepSeek, output tokens are $0.18 (55%) and input $0.15. Output is priced at $1.2/Mtok — 4× the input rate — so the more your product generates per request, the faster a customer's margin slips.
Worked example
Take a power user on your $49/mo plan sending 8M input / 2.5M output tokens a month. On DeepSeek that's $5.40 in tokens — that's still comfortable at 89% ($43.60) — even a heavy user leaves you firmly in the black on most plan prices.
How to keep DeepSeek profitable
- Trim and cache input context — long system prompts and re-sent chat history are pure, repeated cost.
- Cap output length and stop generation early where you can: at roughly 4× the input price, every extra generated token is where DeepSeek hurts most.
- Route easy requests to a cheaper model and reserve DeepSeek for the hard ones that actually need it.
- Set a per-customer margin alert so one heavy user can't quietly slip into the red unnoticed.
When to choose DeepSeek
Choose DeepSeek when cost is the priority and the quality fits — it offers the most profitability headroom of any model here, ideal for generous free tiers or low-priced plans.
FAQ
- How much does DeepSeek cost per customer?
- At a typical 500k input / 150k output tokens per customer per month, DeepSeek costs about $0.33 per customer (input 0.3/Mtok, output 1.2/Mtok).
- Is DeepSeek profitable for a $49/mo AI SaaS?
- At typical usage, yes — margin is about 99.3% ($48.67 per customer). It erodes as usage rises; heavy and power users are where DeepSeek can turn unprofitable.
- What's a good gross margin for an AI SaaS using DeepSeek?
- Most AI products target a 60–80% gross margin. With DeepSeek at typical usage you're around 99.3% on a $49 plan — comfortable — but your blended margin depends on the heavy users, which is the number worth watching.
- At what usage does DeepSeek stop being profitable on a $29 plan?
- Around 43.9M input / 13.2M output tokens a month. Past that point, a $29 customer costs you more than they pay.
- How do I reduce DeepSeek cost per customer?
- Cut output tokens first (they're the priciest), cache or trim input context, route easy requests to a cheaper model, and watch the break-even point — around 74.2M input / 22.3M output tokens a $49 customer stops being profitable.
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