DeepSeek V4 Pro vs GLM-5.1
DeepSeek against Z.ai (GLM), costed on the same three workloads. DeepSeek V4 Pro is cheaper on all three workloads.
Monthly bill, side by side
| Workload | DeepSeek V4 Pro | GLM-5.1 | Difference |
|---|---|---|---|
| Support chatbot 2,500 six-turn conversations a day |
$4,247 | $4,586 | $338 (+8%) |
| Document summariser 1,000 single-shot summaries a day |
$578 | $618 | $39.84 (+7%) |
| Coding agent 200 twelve-turn sessions a day |
$3,231 | $3,463 | $232 (+7%) |
No prompt caching and no batch discount on either side, so the comparison is like for like. Both figures assume 30 days a month.
The rate cards
| DeepSeek V4 Pro | GLM-5.1 | |
|---|---|---|
| Input, per 1M tokens | $1.32 | $1.4 |
| Output, per 1M tokens | $3.96 | $4.4 |
| Cached input | $0.044 | $0.26 |
| Context window | 1M | 200K |
| Maximum output | 384K | 128K |
| Reasoning model | yes | yes |
| Vision | no | no |
Run this comparison on your own numbers
Full detail: DeepSeek V4 Pro pricing · GLM-5.1 pricing