Claude Fable 5.2 vs Gemini 3.1 Pro Preview
API pricing, context, and independently measured performance, side by side. Gemini 3.1 Pro Preview starts 75% cheaper on input than Claude Fable 5.2 at list prices.
Claude Fable 5.2
Anthropic · released Nov 9, 2026
Best input$8.00 / MTok
Best output$40.00 / MTok
Context1M
Providers5
Fastest measured—
VisionToolsReasoningStructured outputPrompt caching
Gemini 3.1 Pro Preview
Google · released Feb 19, 2026
Best input$2.00 / MTok
Best output$12.00 / MTok
Context1.05M
Providers6
Fastest measured2.9s° TTFT · 495 tok/s
VisionToolsReasoningStructured outputPrompt caching
Cheapest providers, measuredUSD / MTOK
| MODEL | PROVIDER | INPUT | OUTPUT | TTFT | TPS | SMOKE |
|---|---|---|---|---|---|---|
| Claude Fable 5.2 |  Google | $8.00 | $40.00 | — | — | — |
| Claude Fable 5.2 |  Amazon Bedrock | $8.00 | $40.00 | — | — | — |
| Claude Fable 5.2 |  Azure | $8.00 | $40.00 | — | — | — |
| Gemini 3.1 Pro Preview | Google | $2.00 | $12.00 | 2.9s° | 182° tok/s | — |
| Gemini 3.1 Pro Preview |  Google AI Studio | $2.00 | $12.00 | 2.9s° | 495° 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