DeepSeek V4 Pro 0423 vs gpt-oss-120b
API pricing, context, and independently measured performance, side by side. gpt-oss-120b starts 96% cheaper on input than DeepSeek V4 Pro 0423 at list prices.
DeepSeek V4 Pro 0423
DeepSeek · released Apr 24, 2026
Best input$0.79 / MTok
Best output$1.58 / MTok
Context1.05M
Providers18
Fastest measured0.54s° TTFT · 175 tok/s
Open weightsToolsReasoningStructured outputPrompt caching
gpt-oss-120b
OpenAI · released Aug 5, 2025
Best input$0.03 / MTok
Best output$0.17 / MTok
Context131K
Providers20
Fastest measured0.21s° TTFT · 366 tok/s
Open weightsToolsReasoningStructured outputPrompt caching
Cheapest providers, measuredUSD / MTOK
| MODEL | PROVIDER | INPUT | OUTPUT | TTFT | TPS | SMOKE |
|---|---|---|---|---|---|---|
| DeepSeek V4 Pro 0423 | STStreamLake | $0.79 | $1.58 | 4.8s° | 41° tok/s | 4/5 |
| DeepSeek V4 Pro 0423 | GMIGMICloud | $0.792 | $2.38 | 3.2s° | 58° tok/s | 4/5 |
| DeepSeek V4 Pro 0423 | DIDigitalOcean | $0.87 | $1.74 | 1.2s° | 5° tok/s | 5/5 |
| gpt-oss-120b | CWCoreWeave | $0.03 | $0.17 | 0.76s° | 51° tok/s | 3/5 |
| gpt-oss-120b |  DeepInfra | $0.037 | $0.17 | 0.55s° | 54° tok/s | 4/5 |
| gpt-oss-120b | AKAkashML | $0.037 | $0.49 | 1.6s° | 68° tok/s | 4/5 |
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