GLM-5 vs GLM-5.1
Specs, VRAM requirements and download trends — updated 24 October 2026.
Specification comparison
Differences are highlighted; identical values are muted.
| Specification | GLM-5 | GLM-5.1 |
|---|---|---|
| Deployment | Open weights · also via API | Open weights · also via API |
| Parameters | 753.9 B | 753.9 B |
| Architecture | GlmMoeDsaForCausalLM | GlmMoeDsaForCausalLM |
| Context length | 202,752 | 202,752 |
| Licence | mit | mit |
| Commercial use | Allowed | Allowed |
| Languages | 2 | 2 |
| Downloads 30d | 1,020,783 | 626,063 |
| Downloads all time | 2.4 M | 1.4 M |
| Quantizations on the Hub | SAFETENSORS | SAFETENSORS |
| Gated | No | No |
| First seen on the Hub | 2026-02-11 | 2026-04-03 |
| API input price / 1M tokens | $1.00 | $1.40 |
| API output price / 1M tokens | $3.20 | $4.40 |
| Est. cost per 1M input + 1M output tokens | $4.20 | $5.80 |
| Cached input / 1M tokens | $0.20 | $0.26 |
| AA Intelligence Index | 27.9 | 26.1 |
| AA Coding Index | — | 55.8 |
| AA Agentic Index | — | 23.9 |
| Max output tokens | 131,072 | 131,072 |
| API providers | 8 | 13 |
| Tool calling | Yes | Yes |
| Reasoning mode | Yes | Yes |
API cost
Estimated cost of 1M input + 1M output tokens via OpenRouter
GLM-5
$4.20
GLM-5.1
$5.80
GLM-5 is 1.4× cheaper at list price.
Download trend
Daily snapshots, last 89 days (28 Jul – 24 Oct)
1.0 M157 K
GLM-5
GLM-5.1
VRAM side by side
On RTX 4090 · 24 GB · 8K context unless noted
GLM-5 · fp16 @ 198K ctx
4,457.7 GB / 24 GB
GLM-5.1 · fp16 @ 198K ctx
4,457.7 GB / 24 GB