DeepSeek V4.1 Flash

Lower-cost competitive model

codeintermediate

Overview

DeepSeek launched V4.1 Flash at sharply lower prices and claimed competitive performance versus rival models, including Moonshot’s Kimi K3. The distinguishing feature is aggressive price-performance positioning, which matters for teams optimizing inference cost.

Best For

+developers
+agent builders
+cost-sensitive teams

News & Updates

DeepSeek v4.1 Flash Now Free in OpenCode, Undercutting Paid AI Coding Assistants

DeepSeek has made its v4.1 Flash model available for free inside OpenCode, an open-source AI coding assistant. The model, part of DeepSeek's fast-inference lineup, can now be used by any OpenCode user without API costs. This removes a major paywall for developers who previously relied on paid services like GitHub Copilot or Cursor. The move follows DeepSeek's pattern of aggressive pricing to gain adoption against OpenAI and Anthropic. OpenCode users can now run code generation and completion locally or via DeepSeek's API at zero cost.

other10/15/2026

Developer Spends $80 Testing DeepSeek v4.1 Flash API Performance

A developer ran a stress test called 'Operation Cheepseek Phase 3' on DeepSeek v4.1 Flash, spending $80 in API usage to evaluate the model's real-world performance. The test was shared on Twitter and surfaced on Hacker News, though it drew minimal engagement with just 1 point and 0 comments. DeepSeek's Flash tier is positioned as a low-cost, high-throughput option for developers who need fast inference without premium pricing. The $80 spend suggests the tester pushed a substantial volume of requests through the model, likely benchmarking speed, cost efficiency, or output quality at scale.

other10/12/2026