Tutorial DeepSeek OpenCode Setup: /connect, Version Gate, Flash
DeepSeek OpenCode setup: upgrade to ≥v1.18.30, /connect → deepseek → API key → DeepSeek-V4-Flash; vs Codex, Copilot, Harness.
DeepSeek Blog
In-depth V4 Pro/Flash reviews, prompt engineering tutorials, API guides and open-source deep-dives — updated weekly.
✨ Editor's Pick
Tutorial ✍️ DeepSeek V4 Pro Team 📅 Oct 13, 2026 ⏱️ 6 min read
DeepSeek Harness v0.2.1-alpha.2: Worktrees & Channel Trap
DeepSeek Harness v0.2.1-alpha.2 is prerelease: Git Worktrees, working_directory, reasoning translate; npm latest stays 0.2.0-rc.2, both mode gone.
Read: DeepSeek Harness v0.2.1-alpha.2: Worktrees & Channel Trap →📚 All Articles
Tutorial 
Tutorial DeepSeek GitHub Copilot Setup: Chat Extension and CLI
DeepSeek GitHub Copilot setup: install the Chat extension into the model picker, or wire Copilot CLI with Anthropic BYOK—and avoid the reasoning_content 400.
Tutorial DeepSeek API Function Calling: tools vs JSON Output
DeepSeek API Function Calling: tools loop, strict mode, and when to use JSON Output (response_format). Examples on deepseek-flash and common pitfalls.
Tutorial How to Send Images with the DeepSeek API: Use deepseek-flash
How to send images with the DeepSeek API: use deepseek-flash, not Vision-Exp. Three methods (URL / base64 / Files API), size limits, and common 400s.
Tutorial DeepSeek API Peak Hours: Weekends, Holidays, Makeup Days
DeepSeek API peak windows on weekdays; weekends and Chinese public holidays stay off-peak all day. Don’t bill makeup Saturdays as peak.
Release Call DeepSeek V4.1 Flash GA with deepseek-flash
DeepSeek V4.1 Flash is GA. Set model to deepseek-flash. The beta ID expired; old Flash and Vision-Exp only route for now. Prices vs V4 Pro.
Release Is DeepSeek V4 Pro Still Available? API Continues After Sep 14
Yes — DeepSeek confirmed deepseek-v4-pro API continues after Sep 14, 2026 with billing unchanged. How it differs from deepseek-flash.
Release DeepSeek V4.1 Flash Beta: Model ID and Expiry
How to call DeepSeek V4.1 Flash beta: model ID deepseek-v4.1-flash-expires-on-0910, expires Sep 10, same price as V4 Flash, 20 concurrency per account.
Tutorial DeepSeek Responses API: How to Call It vs Chat
How to call DeepSeek Responses API: client.responses.create, streaming without DONE, stateless traps, and when to keep Chat Completions.
Tutorial DeepSeek API Context Caching: Prefix Hits & Cost Control
DeepSeek API disk context cache is on by default. Prefix hit rules, prompt_cache_hit_tokens, and putting a stable prefix first to cut input cost.
Tutorial DeepSeek API 429 Rate Limits: Concurrency, user_id & Retries
When DeepSeek API returns HTTP 429: account concurrency caps, why extra API keys do not help, user_id isolation, plus expansion and backoff retry tips.
Tutorial DeepSeek Thinking Mode: Toggle, reasoning_effort & Tools 400
Thinking is on by default for DeepSeek V4. Learn how to toggle it, set reasoning_effort, handle reasoning_content, and avoid HTTP 400 when calling tools.
Tutorial What Is DeepSeek V4 Pro? Flash vs Pro, Web vs API
DeepSeek V4 Pro is the flagship ID deepseek-v4-pro, not a new site and not Flash. 1M context, free web trial, API peak pricing after 17 Aug, and how to pick.
Tutorial DeepSeek Codex Setup: One-Click Script, Flash vs Pro
Wire DeepSeek into Codex via Responses API—official script, config.toml, Flash vs Pro, and peak-pricing cost tips for CLI, desktop, and VS Code.
Release DeepSeek API Prices Changed Today: Which Line Rose 1,100%
DeepSeek API new rates took effect Aug 17, 2026. Unpack V4 Pro / Flash peak pricing, the 1,100% line, cache, off-peak shifts, and the still-free web app.
Tutorial What is DeepSeek Harness? Open-Source Agent Runtime and API Setup
DeepSeek Harness is the August 2026 open-source agent runtime, not a new model. How it differs from the web app, V4 Pro and API, plus npx setup.
Tutorial DeepSeek Translation: EN↔ZH and Localization Workflows
DeepSeek V4 translation guide: turn source text into deliverable translations, glossaries and notes. Web steps, prompts, Pro/Flash and API batches.
Tutorial DeepSeek PPT Guide: Outlines and Stage-Ready Scripts
DeepSeek V4 PPT guide: turn sources into slide outlines, talking points and speaker scripts. Web steps, reusable prompts, Pro/Flash and API batches.
Tutorial DeepSeek Competitive Analysis: Sources to Matrix
DeepSeek V4 competitive-analysis guide: turn sites, pricing and reviews into matrices and briefs. Web steps, prompts, Pro/Flash choices, API monitoring.
Tutorial DeepSeek Business Email: Draft to Sendable Messages
DeepSeek V4 business-email guide: turn drafts into clear subjects, tone and asks. Web-app steps, reusable prompts, Pro/Flash choices, API follow-up.
Tutorial DeepSeek Meeting Minutes: Transcripts to Action Items
DeepSeek V4 meeting-minutes guide: turn transcripts into decisions, action tables and weekly briefs. Web steps, prompts, Pro/Flash, API workflows.
Tutorial DeepSeek Excel Analysis: Spreadsheets to Insights
DeepSeek V4 Excel guide: clean tables, pivots, conclusions and charts. Web-app steps, reusable prompts, Pro/Flash choices, weekly API workflows.
Tutorial DeepSeek Long-Document Analysis with 1M Context
DeepSeek V4 long-document guide with million-token context: web-app steps, reusable prompts, Pro/Flash choices, and API batch workflows.
Tutorial 2026 DeepSeek Guide: Free Web Chat, API Key and V4
Start with DeepSeek: free DeepSeek web chat, API Key setup, deepseek-v4-pro vs deepseek-v4-flash, 1M context, OpenAI-compatible integration, and FAQ.
Release DeepSeek V4 Full GA Is Live: Top Performance, Price Disruptor
DeepSeek V4 GA launches Flash and Pro, 1M context, peak-valley pricing. Near Opus-level at a fraction of rival prices; old IDs retire July 24.
Tech Deep Dive DeepSeek + Claude Code: Multi-Model AI Agents
From “which model is strongest” to “how to build an AI team”: DeepSeek and Claude Code on multi-model Agents and the agent ecosystem.
Case Study DeepSeek PubMed Edition: Real Links in 5 Minutes
DeepSeek PubMed Edition connects to PubMed with citation links, knowledge graphs, literature reports, and deep-thinking mode for research.
Case Study DeepSeek V4 Case: Building an AI Handheld Console
zistar used DeepSeek V4 and Claude Code to design an ESP32-S3 handheld with NES emulator, AI voice and Bluetooth HID — fully open source.
Case Study DeepSeek Hiring List: AI Era Needs Teams, Not Genius
DeepSeek lists 7 hiring categories and 33 roles, doubling headcount. The signal: AI competition needs full teams, not lone geniuses.
Release DeepSeek V3.1-Terminus: Agent Scores Jump 36%
DeepSeek V3.1-Terminus silently ships: BrowseComp hits 38.5, Terminal-bench 36.7, HLE enters global top 3. Two notorious bugs fixed; Agent capabilities surge.
Release DeepSeek V4 Launches July 15 with Peak-Valley Pricing
DeepSeek V4 goes live July 15 with Pro and Flash APIs. Peak-valley pricing, three core upgrades, and a guide for developers and enterprises.
Release DeepSeek V4 Launch: Peak-Valley API Pricing Explained
DeepSeek V4 official release mid-July on Tencent Cloud. Peak-valley API pricing, performance highlights, and what it means for developers.
Tutorial DeepSeek Open-Sources Deep Code: Free AI Coding Assistant
Deep Code, a free terminal AI coding assistant tuned for V4, is listed in official API docs. Pricing vs Cursor and Claude Code, plus a 3-step quick start.
Tutorial DeepSeek V4 Productivity: 10 Ways to Double Efficiency
10 AI productivity scenarios for office work — meeting notes, reports, competitor analysis, knowledge base. Use the DeepSeek web app today.
Case Study DeepSeek-V4 Vision Mode Case Studies: When AI Truly Opens Its Eyes
4 real cases: document OCR, webpage reconstruction, medical imaging, and cultural understanding — multimodal capabilities in action.
Release DeepSeek-V4 Official Launch & Peak-Valley Pricing Explained
DeepSeek-V4 official release planned for mid-July. Full breakdown of peak-valley pricing, DSpark acceleration, and Pro vs Flash selection.
Tech Deep Dive DeepSeek-V4-Pro vs GPT-4o: Full Benchmark Comparison
6 benchmark tests: V4 Pro leads GPT-4o in code (3206), math (85.3%), reasoning (90.1%) at 1/10 the cost.
Release DeepSeek-V4-Pro Officially Released
Benchmark: V4 Pro processes a 100-page PDF in 12 seconds. Deep dive into 1M context, Agent capabilities, vision-primitive mode, and MIT open-source license.
Tutorial 10 Prompt Templates to Make DeepSeek-V4 Your Coding Partner
10 copy-paste coding prompts: refactor, debug, unit tests — save ~40% coding time.
Case Study Vision Mode in Practice: Charts, UI & Engineering Drawings
3 real cases: financial charts, UI screenshot testing, engineering drawings — 60% token savings.
Tech Deep Dive Vision-Primitive Image Mode Deep Dive
V4 Pro vision mode hits 92.3% on ChartQA with 1/4 the token cost of competitors. Architecture deep dive.
Tutorial Build a Production Chatbot with DeepSeek API
Step-by-step: streaming, context management, function calling, RAG — with runnable code.
Tech Deep Dive DSpark Speculative Decoding Acceleration Framework
Deep dive into DSpark: code generation from 45 tok/s to 83 tok/s, up to 85% inference speed boost.
Tech Deep Dive Open-Source LLM 2026 Review: Landscape, Trends & DeepSeek
H1 2026 open-source LLM roundup: closing gap with closed models, cost drops, Agent as main battlefield.
Tech Deep Dive V4 Flash Edge Deployment: Millisecond Responses on Limited Compute
Deploy V4 Flash with Ollama/vLLM/SGLang on edge devices. Throughput, VRAM, and latency tuning.
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