Haystack by deepset vs. Ask Codi

Haystack is deepset's open-source Python AI orchestration framework for building customizable, production-grade AI agents and workflows. Connect components like language models, vector databases, and file converters into pipelines and agents that retrieve, reason, and act on your own data; use hooks to control the agent loop: enforce a token budget before the next LLM call, incorporate human approval before a risky tool call, or use compaction to keep context small.

We provide an OpenAI-compatible orchestration layer that lets teams compose their own “virtual models” on top of any LLM - combining prompts, reasoning, review, and guardrails, and use them everywhere, from your IDE to your backend. Key features: 1. One OpenAI-compatible API for many LLMs 2. Custom models you name & reuse 3. Reasoning mode on demand 4. Built-in review mode 5. Guardrails & PII masking 6. IDE & CLI integrations 7. Analytics & cost controls.