DeepSeek V4.1 Flash vs GLM 5.3 Flash
API pricing, context, and independently measured performance, side by side. DeepSeek V4.1 Flash starts 25% cheaper on input than GLM 5.3 Flash at list prices.
DeepSeek V4.1 Flash
DeepSeek · released Sep 10, 2026
Best input$0.03 / MTok
Best output$0.12 / MTok
Context1.05M
Providers39
Fastest measured0.23s° TTFT · 382 tok/s
Open weightsVisionToolsReasoningStructured outputPrompt caching
GLM 5.3 Flash
Z.ai · released Aug 26, 2026
Best input$0.04 / MTok
Best output$0.078 / MTok
Context1.05M
Providers45
Fastest measured0.46s° TTFT · 99 tok/s
Open weightsVisionToolsReasoningStructured outputPrompt caching
Cheapest providers, measuredUSD / MTOK
| MODEL | PROVIDER | INPUT | OUTPUT | TTFT | TPS | SMOKE |
|---|---|---|---|---|---|---|
| DeepSeek V4.1 Flash |  Engy | $0.03 | $0.12 | — | — | — |
| DeepSeek V4.1 Flash |  Morph | $0.04 | $0.60 | 3.3s° | 74° tok/s | — |
| DeepSeek V4.1 Flash |  Wafer | $0.051 | $0.567 | 0.33s° | 441° tok/s | — |
| GLM 5.3 Flash |  Relace | $0.04 | $0.078 | 1.1s° | 141° tok/s | — |
| GLM 5.3 Flash | Wafer | $0.042 | $0.184 | 0.51s° | 247° tok/s | — |
| GLM 5.3 Flash | OPOpenInference | $0.06 | $0.30 | 6.7s° | 80° 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