LIVE MODELV4 FLASH / FIELD GUIDE

DeepSeek V4 Flash, decoded for production

DeepSeek V4 Flash is the fast, economical V4 model: a 284B-total, 13B-active MoE with a 1M-token context window, thinking and non-thinking modes, tool use, and current regular pricing from $0.0028 per 1M cache-hit input tokens.

Context
1M
tokens
Max output
384K
tokens
Cache hit
$0.0028
per 1M input
Output
$0.28
per 1M tokens
Operational brief

From signal to shipping

01 / MODEL

Large capacity, sparse activation

V4 Flash has 284B total parameters while activating 13B per token. DeepSeek positions it as the speed-and-economy member of V4, with reasoning close to Pro and comparable results on simple agent tasks.

  • Current published version: DeepSeek-V4-Flash-0731
  • Thinking and non-thinking modes in one model
  • JSON output, tool calls, and long-context workflows
02 / INTERFACE

One model, three practical protocols

Use Chat Completions for standard SDKs, the Anthropic-compatible endpoint for Claude Code, or the Responses endpoint for current Codex CLI. MyDeepSeek keeps the model identifier consistent across those routes.

  • OpenAI-style Chat Completions: /api/chat/completions
  • Anthropic Messages: /anthropic/v1/messages
  • OpenAI Responses: /v1/responses
03 / ECONOMICS

Caching changes the input-cost curve

Current regular rates separate cache hits from misses: $0.0028 versus $0.14 per 1M input tokens, with output at $0.28. Reused stable prefixes can therefore matter more than trimming a few output tokens.

  • Cache accounting is automatic when the provider reports cached tokens
  • Use the calculator to model your actual hit ratio
  • The announced future peak/off-peak policy is not yet effective
Questions / answers

The short answers that unblock a build.

What is DeepSeek V4 Flash?+

It is DeepSeek's fast, economical V4 model, using a 284B-total and 13B-active mixture-of-experts architecture with a 1M-token context window.

Does V4 Flash support reasoning and tools?+

Yes. The current model supports thinking and non-thinking modes, JSON output, tool calls, and agent workflows.

Which V4 Flash API should I use?+

Use Chat Completions for general OpenAI-compatible clients, Anthropic Messages for Claude Code, and Responses for current Codex CLI integrations.

Ready / next action

Start with the production V4 Flash gateway.

Create an API key