Kimi K3 vs GLM 5.3 Flash
API pricing, context, and independently measured performance, side by side. GLM 5.3 Flash starts 83% cheaper on input than Kimi K3 at list prices.
Kimi K3
Moonshot AI · released Jul 16, 2026
Best input$0.238 / MTok
Best output$5.50 / MTok
Context1.05M
Providers30
Fastest measured0.8s° TTFT · 105 tok/s
Open weightsVisionToolsReasoningStructured outputPrompt caching
GLM 5.3 Flash
Z.ai · released Aug 26, 2026
Best input$0.041 / MTok
Best output$0.15 / MTok
Context1.05M
Providers38
Fastest measured0.38s° TTFT · 40 tok/s
Open weightsVisionToolsReasoningStructured outputPrompt caching
Cheapest providers, measuredUSD / MTOK
| MODEL | PROVIDER | INPUT | OUTPUT | TTFT | TPS | SMOKE |
|---|---|---|---|---|---|---|
| Kimi K3 |  Wafer | $0.238 | $16.00 | 1.7s° | 117° tok/s | 0/5 |
| Kimi K3 |  InferenceNet | $0.239 | $11.94 | — | — | — |
| Kimi K3 |  Relace | $0.30 | $12.00 | 2.6s° | 113° tok/s | — |
| GLM 5.3 Flash | OPOpenInference | $0.041 | $0.375 | 0.38s° | 40° tok/s | — |
| GLM 5.3 Flash | Wafer | $0.059 | $0.20 | — | — | — |
| GLM 5.3 Flash |  Pareto Inference | $0.06 | $0.20 | 2.1s | 66 tok/s | — |
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