DeepSeek V4 Flash (Fireworks AI) API
About
Build advanced reasoning agents with DeepSeek V4 Flash (Fireworks AI), a specialized AI model optimized for complex logic and chain-of-thought tasks. This model delivers cost-effective pricing at $0.22/1M input and $0.66/1M output tokens, native tool calling support, open weights architecture. Access DeepSeek V4 Flash (Fireworks AI) via the LLM Gateway API with up to 393K output tokens.
Capabilities
Input Modalities
text
Output Modalities
text
Reasoning
Yes
Structured Output
Yes
Tool Use
Yes
WeightsOpen
Limits
Context Window
1.0M
Tokens
Input Limit
1.0M
Tokens
Max Output
393K
Tokens
Pricing
Standard (per 1M tokens)
Input
$0.22
Output
$0.66
Caching (per 1M tokens)
Read
$0.0070
Frequently Asked Questions
DeepSeek V4 Flash (Fireworks AI) by LLM Gateway costs $0.22 per 1M input tokens and $0.66 per 1M output tokens. Cached reads cost $0.0070 per 1M tokens.
Model Details
ID
fireworks/deepseek-v4-flash
Provider
LLM GatewayFamily
deepseek-flash
Release Date
Apr 24, 2026
Knowledge Cutoff
May 1, 2025
API Integration
NPM Package
@ai-sdk/openai-compatible
Environment Variables
LLMGATEWAY_API_KEY
API Base URL
https://api.llmgateway.io/v1