gpt-oss-120b vs Qwen3.8 27B
API pricing, context, and independently measured performance, side by side. Qwen3.8 27B starts 33% cheaper on input than gpt-oss-120b at list prices.
gpt-oss-120b
OpenAI · released Aug 5, 2025
Best input$0.03 / MTok
Best output$0.15 / MTok
Context131K
Providers25
Fastest measured0.26s° TTFT · 227 tok/s
Open weightsToolsReasoningStructured outputPrompt caching
Qwen3.8 27B
Qwen · released Aug 14, 2026
Best input$0.02 / MTok
Best output$0.32 / MTok
Context1M
Providers22
Fastest measured0.5s° TTFT · 224 tok/s
Open weightsVisionToolsReasoningStructured outputPrompt caching
Cheapest providers, measuredUSD / MTOK
| MODEL | PROVIDER | INPUT | OUTPUT | TTFT | TPS | SMOKE |
|---|---|---|---|---|---|---|
| gpt-oss-120b |  Near AI | $0.03 | $0.15 | 1.3s° | 74° tok/s | — |
| gpt-oss-120b |  Venice | $0.03 | $0.15 | 1.9s° | 60° tok/s | — |
| gpt-oss-120b |  CoreWeave | $0.03 | $0.17 | 0.68s° | 33° tok/s | 3/5 |
| Qwen3.8 27B | TETenstorrent | $0.02 | $0.50 | — | — | — |
| Qwen3.8 27B |  Darkbloom | $0.035 | $2.20 | 11.2s° | 72° tok/s | — |
| Qwen3.8 27B |  Chutes | $0.039 | $1.25 | — | — | 4/5 |
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