Google Agent Development Kit (ADK)vsOpenAI Agents SDK
Generated from the two spec rows. Green marks the better value where a spec has a clear direction. Everything else is just different.
Google Agent Development Kit (ADK)
Google · Agent framework
OSSMCP
Panel
7.11 spec wins
- Reliability
- 7.0
- Usefulness
- 7.0
- Cost
- 7.3
- Longevity
- 7.0
“Ships Google Search grounding built in, so the agent can at least cite where it went wrong.”
OpenAI Agents SDK
OpenAI · Agent framework
OSSMCP
Panel
7.12 spec wins
- Reliability
- 7.2
- Usefulness
- 7.0
- Cost
- 7.2
- Longevity
- 7.0
“Billed as the production-ready upgrade of Swarm, which tells you what Swarm was.”
Spec by spec
| Spec | Google Agent Development Kit (ADK) | OpenAI Agents SDK |
|---|---|---|
| Architecture | ||
| Category | Agent framework | Agent framework |
| Runs | local, cloud | local, cloud |
| Platforms | macos, linux, windows | macos, linux, windows |
| Context window | not documented | not documented |
| Protocols | ||
| MCP client | Yes | Yes |
| MCP server | Yes | No |
| Capabilities | ||
| Runs terminal commands | Yes | Yes |
| Multi-file edits | No | Yes |
| Git operations | No | No |
| Browser control | Yes | Yes |
| Sandboxed execution | No | No |
| Multi-agent orchestration | Yes | Yes |
| Headless / CI mode | Yes | Yes |
| Models | ||
| Backbone | Gemini, any LiteLLM model, Ollama | GPT, any LiteLLM-supported model |
| Bring your own model | Yes | Yes |
| Local models | Yes | Yes |
| Cost | ||
| Pricing model | byok | byok |
| Starts at | $0/mo | $0/mo |
| Free tier | Yes | Yes |
| Bring your own key | Yes | Yes |
| Openness | ||
| Open source | Yes | Yes |
| License | Apache-2.0 | MIT |
| GitHub stars | 21,692 | 29,799 |
Which one would each critic pick
| Critic | Google Agent Development Kit (ADK) | OpenAI Agents SDK | Pick |
|---|---|---|---|
| El Juez | — | — | not enough reviews |
| El Amigo | 7.0 | 7.0 | no preference |
| El Crítico | 6.8 | 6.8 | no preference |
| El Profesor | 6.8 | 6.5 | Google Agent Development Kit (ADK) — LlmAgent plus Sequential, Parallel and Loop workflow agents, graph workflows for explicit execution paths, and context managed through sessions and memory rather than string concatenation. |
| La Inversora | 7.3 | 7.5 | OpenAI Agents SDK — A free SDK from the vendor that sells the tokens is distribution, not a business; the question is whether OpenAI's own agent products will compete with the developers it recruited. |
| La Jefa | 7.3 | 7.3 | no preference |
| El Hacker | 7.5 | 7.5 | no preference |
Picks are derived from each critic's own scores. Humans vote on matchups on the duels page.