Question Intent Page · Updated 2026-06-16

What is the best LLM API for OpenClaw agents?

Short answer

Start with a low-cost OpenAI-compatible route such as Qwen, DeepSeek, or GLM for testing; use a gateway route when agents run continuously and need fallback, logs, key isolation, budget alerts, and monthly spend caps.

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Conclusion

  • For prototypes, pick the provider that gives a real API key fastest and supports OpenAI-compatible chat completions.
  • For long-running OpenClaw agents, cheapest token price is not enough: verify rate limits, reconnect behavior, tool-call support, and failure handling.
  • For production, keep provider selection configurable and route risky workloads through a gateway with per-agent budget logs.

What to do next

  1. List the agent workload: coding, browser automation, email/admin, research, or scheduled monitoring.
  2. Test one China-friendly compatible model and one global fallback with the same OpenAI SDK client.
  3. Run a 30-minute loop and record tokens, retries, latency, and failed tool calls.
  4. Set a hard monthly budget and alerts before leaving any agent unattended.
  5. Move production traffic behind OpenLLMAPI or another gateway only when fallback and logs are needed.

Recommended paths

Provider Free / credits Best for
Qwen Signup credits vary China-friendly coding and agent tests
DeepSeek Check official pricing/credits Low-cost reasoning and code tasks
Zhipu GLM Credits vary Domestic fallback and Claude-Code-style experiments
OpenLLMAPI Trial terms vary One key, fallback, logs, and routing

Global developer checklist

  • Confirm whether signup, billing, and API keys work from your country before writing production code.
  • Prefer OpenAI-compatible endpoints when you may need to switch models, regions, or providers later.
  • Test free credits with a real smoke prompt and record latency, error shape, streaming behavior, and quota burn.
  • Keep at least one fallback route for provider outages, model deprecations, and regional access changes.

Production handoff

Run OpenClaw agents with budget control

Keep the OpenAI-compatible client, add fallback routes, and see per-agent spend before unattended loops get expensive.

Configure agent routing →

FAQ

Can OpenClaw use any OpenAI-compatible API?

Usually yes if the tool lets you set base_url, api_key, and model. Still test streaming, tool calls, and reconnects before trusting autonomous loops.

Should I choose the cheapest model for agents?

Not blindly. Retries, bad tool calls, and context failures can make a cheap model more expensive than a stable route.

When is a gateway worth it?

Use a gateway when multiple agents share keys, you need fallback, or you want per-agent cost attribution and alerts.

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