DeepSeek V4.1 Flash Fast API
About
Build advanced reasoning agents with DeepSeek V4.1 Flash Fast, a specialized AI model optimized for complex logic and chain-of-thought tasks. This model delivers cost-effective pricing at $0.60/1M input and $2.40/1M output tokens, native tool calling support, open weights architecture. Access DeepSeek V4.1 Flash Fast via the Baseten API with up to 33K output tokens.
Capabilities
Input Modalities
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Output Modalities
text
Reasoning
Yes
Structured Output
Limits
Context Window
1.0M
Tokens
Input Limit
1.0M
Tokens
Max Output
33K
Tokens
Pricing
Standard (per 1M tokens)
Input
$0.60
Output
$2.40
Frequently Asked Questions
DeepSeek V4.1 Flash Fast by Baseten costs $0.60 per 1M input tokens and $2.40 per 1M output tokens.
Model Details
ID
deepseek-ai/DeepSeek-V4.1-Flash-Fast
Provider
BasetenFamily
deepseek-flash
Release Date
Sep 10, 2026
Knowledge Cutoff
May 1, 2025
API Integration
NPM Package
@ai-sdk/openai-compatible
Environment Variables
BASETEN_API_KEY
API Base URL
https://inference.baseten.co/v1