DeepSeek v4 Flash Is Practically Free — Here's What That Actually Means

If you've been reading about AI agents handling software tickets and opening their own PRs, you might be wondering what it actually costs to run something like that at scale. The answer, depending on your model choice, is either 'not much' or 'almost nothing.'

DeepSeek v4 Flash comes in at $0.14/1M tokens in and $0.28/1M out — and that price is the same whether you're routing through our US region or our Singapore region. To put that in plain terms: you could process roughly 7 million input tokens for a single dollar. That's a lot of tickets.

For comparison, gpt-5.5 runs $5.00 in and $30.00 out — over 100× more expensive on output. Claude Opus 4 variants sit at $5.00 in / $25.00 out. Even the mid-tier options like gemini-3.5-flash ($1.50 in / $9.00 out) cost several times more on the output side.

The catch with cheap models is always quality. DeepSeek v4 Flash is a great fit for high-volume, lower-stakes tasks — routing, summarizing, classification. For heavier reasoning work, you might want deepseek-v4-pro at $0.43 in / $0.87 out, or step up to kimi-k2.5 at $0.57 in / $2.41 out.

The pricing gap between budget and flagship models has never been wider.