Alternatives to Strands Harness

These tools sit near Strands Harness. Compare features and pricing before you switch.

Alternatives

DeepSeek Harness: the most token-efficient harness in the Strands comparison, at lower reported accuracy.
OpenAI Agents SDK: a vendor SDK for building the loop yourself.
LangGraph: graph-based orchestration when your workflow needs explicit state machines.

MIT agent runtime. Pay model API only. Live Flash peak $0.44/$1.32 per 1M, not the old $0.14/$0.28 row.

400000000DR: 88AS: 78

OpenAI's official Python and TypeScript agent runtime: agents, handoffs, guardrails, sessions, and tracing.

4000000DR: 95AS: 95

LangChain's low-level agent orchestration runtime: durable graphs, streaming, human-in-the-loop, and persistence. About 39,835 GitHub stars.

5000000DR: 93AS: 95