DeepSeek's price and rate-limit tables, read first-hand, and sixteen harness integrations

First-party figures per million tokens, as published: deepseek-v4-flash at $0.14 input on a cache miss, $0.0028 on a cache hit, $0.28 output, with a 2,500 concurrency limit; deepseek-v4-pro at $0.435, $0.003625 and $0.87, with a 500 limit. Both list a 1M context window and 384K maximum output, and both are served over an Anthropic-format base URL. The docs carry sixteen agent-integration pages, among them Claude Code, OpenCode, Hermes, Crush and Pi. The Claude Code page documents a name mapping: "Models starting with claude-opus are mapped to deepseek-v4-pro, models starting with claude-haiku or claude-sonnet are mapped to deepseek-v4-flash." What is verified here is the tables as of the read, not that anything changed on July 31: the vendor's own change log tops out at 2026-04-24 and never mentions a 0731 build.

Why it matters: This is the price side of harness cost per task, read from the vendor rather than a summary. A published mapping from one vendor's model names onto another's makes a harness swappable by environment variable, turning the model into configuration and leaving the harness as the durable choice.