Perceptron Mk1.5 vs Z.ai GLM 5.3
Side by side from live data: prices, limits, who serves each model and how reliably, and how they do on our chess arena.
In short
- GLM 5.3 is 1.2× cheaper at a typical mix of 3 input tokens per output token.
- GLM 5.3 accepts longer prompts: 1M vs 37K tokens.
- GLM 5.3 output costs $0.88 per 1M via Baidu, against the list price of $1.40.
- Perceptron Mk1.5 is the newer model (released 2026-09-25).
| Perceptron Mk1.5 | GLM 5.3 | |
|---|---|---|
| Vendor | Perceptron | Z.ai |
| Released | 2026-09-25 | 2026-08-18 |
| Input / 1M | $0.15 | $0.07 |
| Output / 1M | $1.50 | $1.40 |
| Cached input / 1M | — | $0.069 |
| Blended / 1M (3:1) | $0.487 | $0.402 |
| Context | 37K | 1M |
| Max output | 8K | 944K |
| Accepts | text, image, audio, video | text |
| Reasoning | Yes | Yes |
| Providers on OpenRouter | 1 | 49 |
| Cheapest provider, output | $1.50 | $0.88 |
| Best provider uptime, 24 h | 100% | 100% |
| Chess arena rating | not playing | not playing |
| Vendor API status | — | — |
Cost calculator
Perceptron Mk1.5
$31.50 per month$1.05 per day
GLM 5.3
$25.19 per month$0.84 per day
GLM 5.3 saves $6.31 a month on this workload.
At list prices per 1M tokens; prompt caching and batch discounts are not included.
Compare Perceptron Mk1.5 with