Kimi K3 vs GLM 5.1
API pricing, context, and independently measured performance, side by side. GLM 5.1 starts 65% cheaper on input than Kimi K3 at list prices.
Kimi K3
Moonshot AI · released Jul 16, 2026
Best input$2.60 / MTok
Best output$13.00 / MTok
Context1.05M
Providers16
Fastest measured0.61s° TTFT · 84 tok/s
Open weightsVisionToolsReasoningStructured outputPrompt caching
GLM 5.1
Z.ai · released Apr 7, 2026
Best input$0.91 / MTok
Best output$2.86 / MTok
Context205K
Providers17
Fastest measured0.66s° TTFT · 190 tok/s
Open weightsToolsReasoningStructured outputPrompt caching
Cheapest providers, measuredUSD / MTOK
| MODEL | PROVIDER | INPUT | OUTPUT | TTFT | TPS | SMOKE |
|---|---|---|---|---|---|---|
| Kimi K3 | SRSail Research | $2.60 | $13.00 | 1.5s° | 144° tok/s | 2/5 |
| Kimi K3 | MOMorph | $2.80 | $14.00 | 1.7s° | 17° tok/s | 1/5 |
| Kimi K3 |  DeepInfra | $2.85 | $14.25 | 2s° | 25° tok/s | 4/5 |
| GLM 5.1 | GMIGMICloud | $0.91 | $2.86 | 1.1s° | 87° tok/s | 3/5 |
| GLM 5.1 | STStreamLake | $0.966 | $3.04 | 1.1s° | 48° tok/s | 2/5 |
| GLM 5.1 | CHChutes | $0.98 | $3.08 | 1.9s° | 79° tok/s | 3/5 |
TTFT/TPS: ModelIndex-measured medians (P50, trailing 72h) · 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