OpenAI Assistants API vs LangGraph

A side-by-side look at scores, pricing and features — with RECATOOLS' ASEAN-aware verdict for each.

OpenAI Assistants API OpenAI's stateful agent API — shut down 26 Aug 2026 Visit LangGraph Open-source graph framework for durable, stateful AI agents Visit
RECATOOLS Score 5 / 10 8.3 / 10
Capability 7 8.5
Value for money 4 8
Ease of use 6 6
ASEAN readiness 6 6.5
API quality 8 8.5
Pricing Paid Freemium
Free tier
Paid from
Has API
Open source
Free to use
Users
Founded 2023
Maker
Verdict

The Assistants API gave developers managed conversation threads, built-in code interpreter, file retrieval and tool calling without hand-rolling orchestration, and a lot of production assistants from non-AI-native compan...

LangGraph has genuine production mileage that most agent frameworks can only cite in a blog post: Klarna's customer-support assistant runs on it at 85 million users, Replit Agent's multi-step app-building flow is built o...

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Comparisons cover up to 4 tools. Scores are RECATOOLS editorial assessments; verify current pricing on each vendor's site.