COST OPTIMIZATION

Databricks measured the same model through different coding harnesses and found cost per task varied more than 2x at identical quality. Pi's minimalism explains why: roughly 1k tokens of system prompt and 3x less context per turn.

A practical guide to routing between Claude Opus 5, Sonnet 5, Haiku 4.5, GPT-5.6 Sol/Terra/Luna, and Kimi K3 based on task complexity, cost budget, and latency requirements - with decision frameworks and code examples.

Comparing LLMs by token pricing alone can lead you to choose worse, more expensive models. Cost per task tells the real story.

A Show HN project claims large agent-cost cuts by rendering bulky context as images. The useful lesson is not the trick itself. It is that compression needs evals, byte-safety rules, and per-request accounting.

Factory.ai shipped a router that auto-picks the model for each Droid session and fails over across providers. The vendor claims 20-25% lower token spend and 99.9%+ request reliability. Here is what the product actually does, which claims are vendor claims, and whether a router beats DIY routing for your team.

Fable 5 prompt caching economics: cache-write vs cache-read pricing, 5-minute vs 1-hour TTL break-even math, and worked agent-loop examples.

Claude Fable 5's $10/$50 per million token pricing can catch teams off guard - here is how to build a real cost model before you commit.

Factory AI's Droid agent surfaces a new competitive front in coding tools: cost-per-completed-task. Here's what their architecture reveals about where the whole industry is heading.

MiniMax M2.5 hits 80.2% on SWE-bench Verified and plugs into the Anthropic SDK with two environment variables. Here is what you need to know before switching.

DeepSeek V4 is trending because it is close enough to frontier coding models at a much lower token price. The real question for developers is where cheap reasoning belongs in an agent stack.

How to ship Claude's Batch API in production. 50% cost savings, TypeScript SDK code, JSONL request format, and the async architecture gotchas that bite at 100k requests.

A production guide to Claude's extended thinking mode. Real cost math, TypeScript SDK code, and the tasks where reasoning tokens are worth 3x the spend.

Cut Claude API spend by up to 90% with prompt caching. Real numbers, TypeScript SDK code, and the gotchas Anthropic's docs gloss over.