Qwen3.8 27B vs GLM 5.1
API pricing, context, and independently measured performance, side by side. Qwen3.8 27B starts 90% cheaper on input than GLM 5.1 at list prices.
Qwen3.8 27B
Qwen · released Aug 14, 2026
Best input$0.10 / MTok
Best output$1.80 / MTok
Context1M
Providers17
Fastest measured0.91s° TTFT · 33 tok/s
Open weightsVisionToolsReasoningStructured outputPrompt caching
GLM 5.1
Z.ai · released Apr 7, 2026
Best input$0.965 / MTok
Best output$3.03 / MTok
Context205K
Providers16
Fastest measured0.85s° TTFT · 22 tok/s
Open weightsToolsReasoningStructured outputPrompt caching
Cheapest providers, measuredUSD / MTOK
| MODEL | PROVIDER | INPUT | OUTPUT | TTFT | TPS | SMOKE |
|---|---|---|---|---|---|---|
| Qwen3.8 27B |  Darkbloom | $0.10 | $1.80 | — | — | — |
| Qwen3.8 27B | DEDekaLLM | $0.10 | $2.50 | — | — | — |
| Qwen3.8 27B |  Reka | $0.104 | $2.17 | 1s° | 48° tok/s | 4/5 |
| GLM 5.1 |  Baidu | $0.965 | $3.03 | 1s° | 58° tok/s | 3/5 |
| GLM 5.1 |  StreamLake | $0.966 | $3.04 | 2.5s° | 46° tok/s | 2/5 |
| GLM 5.1 |  Chutes | $0.98 | $3.08 | 2.9s° | 38° tok/s | 3/5 |
TTFT/TPS: ModelIndex-measured medians (P50, trailing 21d) · chat10k profile (~10K in / 200 out) · ° = measured via OpenRouter routing (adds a hop) · SMOKE: of 5 programmatic capability probes passed · methodology v1.1 — full details on each model page