Model comparison
GLM-5.1 vs Qwen3.8 2.4T A95B
GLM-5.1 (Z.ai) and Qwen3.8 2.4T A95B (Qwen) side by side: what each costs per million tokens through Rapid Router, how much context each takes, what each supports, and where independent benchmarks place them. Same API, same key; switching is a one-string change.
| GLM-5.1 | Qwen3.8 2.4T A95B | |
|---|---|---|
| Input price per 1M | $1.05 | $2.00 |
| Output price per 1M | $3.50 | $6.00 |
| Context window | 200K tokens | 1M tokens |
| Max output | 131K tokens | 131K tokens |
| Input types | text | text, image |
| Capabilities | tools, JSON, reasoning | tools, JSON, vision, reasoning |
| Author | Z.ai | Qwen |
What a month costs on each
| Workload | GLM-5.1 | Qwen3.8 2.4T A95B |
|---|---|---|
| Chatbot month (15M in, 4M out) | $29.75 | $54.00 |
| RAG month (40M in, 3M out) | $52.50 | $98.00 |
| Coding month (60M in, 10M out) | $98.00 | $180.00 |
On a typical 75/25 input-output mix, GLM-5.1 costs less (about 45% less than Qwen3.8 2.4T A95B). Qwen3.8 2.4T A95B takes the longer prompt at 1M tokens. Try your own numbers in the cost calculator.
Call either one
curl https://rapidrouter.ai/api/v1/chat/completions \
-H "Authorization: Bearer $RAPIDROUTER_API_KEY" \
-H "Content-Type: application/json" \
-d '{"model": "z-ai/glm-5.1", "messages": [{"role": "user", "content": "Hello"}]}'
# the other one: change the model string
-d '{"model": "qwen/qwen3.8-2.4t-a95b", ...}'Common questions
Which is cheaper, GLM-5.1 or Qwen3.8 2.4T A95B?
GLM-5.1 is cheaper on a typical mix of 75% input and 25% output tokens, by about 45%. Through Rapid Router both are billed at the provider list price per million tokens.
Which has the larger context window?
Qwen3.8 2.4T A95B, at 1M tokens. GLM-5.1 offers 200K tokens.
Can I switch between GLM-5.1 and Qwen3.8 2.4T A95B without changing code?
Yes. Both are callable at https://rapidrouter.ai/api/v1 with the same OpenAI-compatible request; only the model string changes (z-ai/glm-5.1 or qwen/qwen3.8-2.4t-a95b).
How do I pay for GLM-5.1 or Qwen3.8 2.4T A95B?
Top up a Rapid Router balance by card in US dollars, and both models debit that balance per request.
More GLM models: Z.ai API pricing · More Qwen: Qwen API pricing