Conclusion
- DeepSeek, Qwen, and GLM each fit different chatbot risks; none should be chosen only by headline price.
- Official docs should be checked for current pricing, endpoint, model names, and quota rules.
- Production chatbots need fallback for timeouts, bad JSON, low confidence, and provider rate limits.
- Track cost per resolved conversation and per customer before scaling support traffic.
What to do next
- Create a 40-question chatbot benchmark across FAQ, product, refund, policy, and escalation cases.
- Run the benchmark through DeepSeek, Qwen, GLM, and one stronger fallback route.
- Record answer acceptance, hallucination risk, latency, invalid outputs, retries, and total conversation cost.
- Assign routing rules: cheap primary for simple FAQ, stronger fallback for ambiguous or high-value cases.
- Use OpenLLMAPI or middleware for one endpoint, budget caps, route logs, and provider switching.
Recommended paths
| Provider | Free / credits | Best for |
|---|---|---|
| DeepSeek | Verify official pricing | Low-cost reasoning and support answers |
| Qwen DashScope | Signup credits vary | China-friendly bilingual chatbot workflows |
| Zhipu GLM | Signup tokens vary | Domestic fallback and GLM tests |
| SiliconFlow | Free/open routes vary | China-direct multi-model experiments |
| OpenLLMAPI | Trial varies | Routing, fallback, cost attribution, and budgets |
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
Route chatbot traffic by cost and risk
Put DeepSeek, Qwen, GLM, and fallback routes behind one compatible endpoint with per-conversation logs and budget controls.
FAQ
Which is cheapest for a chatbot?
DeepSeek is often a low-cost benchmark, but current price, retries, and accepted-answer rate decide the real cost.
Which is best for China users?
Qwen, GLM, DeepSeek, and SiliconFlow are practical China-friendly candidates. Test access, latency, and billing from your deployment region.
Can I replace Claude or Grok with this stack?
For many support and FAQ tasks, yes after testing. Keep a stronger fallback for tasks that require higher quality or special capabilities.
What should trigger fallback?
Timeouts, rate limits, invalid JSON/tool output, low confidence, refund/policy topics, high-value customers, or repeated retries.