GPT-6.1 Terra Pro vs Grok 4.7
API pricing, context, and independently measured performance, side by side. GPT-6.1 Terra Pro starts 50% cheaper on input than Grok 4.7 at list prices.
GPT-6.1 Terra Pro
OpenAI · released Oct 26, 2026
Best input$1.00 / MTok
Best output$5.00 / MTok
Context1.05M
Providers3
Fastest measured—
VisionToolsReasoningStructured outputPrompt caching
Grok 4.7
xAI · released Sep 21, 2026
Best input$2.00 / MTok
Best output$6.00 / MTok
Context500K
Providers6
Fastest measured3.1s° TTFT · 59 tok/s
VisionToolsReasoningStructured outputPrompt caching
Cheapest providers, measuredUSD / MTOK
| MODEL | PROVIDER | INPUT | OUTPUT | TTFT | TPS | SMOKE |
|---|---|---|---|---|---|---|
| GPT-6.1 Terra Pro |  OpenAI | $1.00 | $5.00 | — | — | — |
| Grok 4.7 |  xAI | $2.00 | $6.00 | 3.1s° | 59° 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