Google Agent Development Kit (ADK) vs OpenAI Assistants API
A side-by-side look at scores, pricing and features — with RECATOOLS' ASEAN-aware verdict for each.
Google Agent Development Kit (ADK)
Google's multi-language, code-first AI agent framework
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OpenAI Assistants API
OpenAI's stateful agent API — shut down 26 Aug 2026
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| RECATOOLS Score | 7.8 / 10 | 5 / 10 |
| Capability | ||
| Value for money | ||
| Ease of use | ||
| ASEAN readiness | ||
| API quality | ||
| Pricing | Open Source | Paid |
| Free tier | — | — |
| Paid from | — | — |
| Has API | ✓ | ✓ |
| Open source | ✓ | ✗ |
| Free to use | ✓ | ✗ |
| Users | — | — |
| Founded | — | 2023 |
| Maker | — | — |
| Verdict | ADK is Google's most technically serious agent framework, and it shows in the surface area: stable SDKs for Python, Go, Java, TypeScript and Kotlin, a built-in ADK Web debugger, and a Python repo that has passed 20,000 G... |
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... |
| Full review → | Full review → |
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Comparisons cover up to 4 tools. Scores are RECATOOLS editorial assessments; verify current pricing on each vendor's site.