Tutorials Intermediate
OpenAI Ultrafast: Pay 6x Only When Latency Matters
A Python router that buys Ultrafast speed only where users wait, with fallback and cost tracking.
9 min read·Kodetra Technologies
6d agoGuides
AI Guides for Builders
How-to content for builders, indie hackers, and AI engineers. Less theory, more shipped code.
Tutorials 
Tutorials Intermediate
GPT-6.1 Sol Computer Use: Build a Browser Agent
Drive a real browser with GPT-6.1 Sol's batched computer tool, with guardrails.
8 min read·Kodetra Technologies
7d ago
Tutorials Intermediate
Ember-1: A/B Test Its 40% Token Savings in Python
Fireworks' Ember-1 claims 40% fewer tokens than Kimi K3. Build a harness to verify it.
8 min read·Kodetra Technologies
7d ago
Tutorials Intermediate
Gemini 3.8 Live: Build a Multilingual Voice Agent
Build a real-time voice agent with Gemini 3.8 Live Extended Thinking.
10 min read·Kodetra Technologies
11d ago
Tutorials Intermediate
Opus 5.5 Progress Updates: Stop Silent Agent Turns
Opus 5.5 moved agent narration into thinking blocks. Stream it back with display updates and nudges.
15 min read·Kodetra Technologies
12d ago
Tutorials Intermediate
Opus 5.5 Upgrade: Fix 4 Breaking Changes Before They 400
Opus 5.5 is 20% cheaper, but old thinking, tool_choice and computer-use code now fails. Fix it.
15 min read·Kodetra Technologies
13d ago
Tutorials Intermediate
Qwen3.8-Flash-Next: Preserved Thinking, Cheaper Agents
Qwen keeps reasoning across every turn by default. Exploit it, or pay for it.
11 min read·Kodetra Technologies
Aug 27
Tutorials Intermediate
Anthropic SDK v1.0: The Silent httpx2 Mock Trap
Upgrade to anthropic>=1 without your respx mocks and OTel traces going quietly blind.
13 min read·Kodetra Technologies
Aug 26
Tutorials Intermediate
A2A 1.0: Sign and Verify Agent Cards Before Delegating
Publish a JWS-signed A2A v1.0 Agent Card in Python and refuse any card you cannot verify.
11 min read·Kodetra Technologies
Aug 21
Tutorials Intermediate
Migrate to Gemini 3.7 Flash: The minimal Thinking Trap
Preflight your configs for gemini-3.7-flash: 5 breaking changes, a validator, real cost math.
12 min read·Kodetra Technologies
Aug 19
Tutorials Intermediate
Muse Code: Async Agents That Survive a Crash
Install Meta's Muse Code, run async agents, and recover long jobs from its crash-safe log.
10 min read·Kodetra Technologies
Aug 13
Tutorials Intermediate
Agent Plugins 1.0: One Bundle, Six AI Clients
Package your Agent Skills and MCP servers into one portable plugin that runs across six AI clients.
11 min read·Kodetra Technologies
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