DeepSeek V4 Flash vs DeepSeek V4 Pro benchmark

Interactive Comparison Diagram

Recommended Workload Routing

Frequently Asked Questions

Which is better overall, DeepSeek V4 Flash or DeepSeek V4 Pro?

DeepSeek V4 Pro has the higher preference Elo in our latest snapshot (1,536). “Better” still depends on coding, price, and latency — see the table.

Which is better at coding, DeepSeek V4 Flash or DeepSeek V4 Pro?

DeepSeek V4 Pro leads SWE-bench at 71.6% vs 71.2%. SWE-bench is one harness, not your repo.

Which is cheaper to run in production?

DeepSeek V4 Flash output tokens are $0.28/1M versus $0.87/1M. Input prices and retry rates still move the real bill.

Which is faster, DeepSeek V4 Flash or DeepSeek V4 Pro?

DeepSeek V4 Flash has the lower time-to-first-token (165 ms vs 410 ms). Tokens/sec is a separate column if you care about long completions.

Which has the larger context window?

DeepSeek V4 Flash accepts 1M tokens versus 1M.

Can I self-host either model?

Both DeepSeek V4 Flash and DeepSeek V4 Pro are marked open-weights. Hosting cost is not in this table.

Are these scores from CompareLLM’s own evals?

No. V1 aggregates public leaderboards (and optional first-party latency pings). Each cell names its source and date. Read /methodology.

What does preference Elo mean on this page?

Preference Elo is a crowd vote from LMArena / Arena. People see two hidden answers and pick the one they like more. The model that wins more often gets a higher Elo. That means people preferred it — not that it passed a school test. It is not SWE-bench, not accuracy, and not a number we invent. DeepSeek V4 Flash and DeepSeek V4 Pro Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.