Claude Fable 5.1 vs GPT-5.6 Sol
API pricing, context, and independently measured performance, side by side. GPT-5.6 Sol starts 60% cheaper on input than Claude Fable 5.1 at list prices.
Claude Fable 5.1
Anthropic · released Sep 1, 2026
Best input$10.00 / MTok
Best output$50.00 / MTok
Context1M
Providers4
Fastest measured—
VisionToolsReasoningStructured outputPrompt caching
GPT-5.6 Sol
OpenAI · released Jul 9, 2026
Best input$4.00 / MTok
Best output$20.00 / MTok
Context1.05M
Providers7
Fastest measured3.2s° TTFT · 179 tok/s
VisionToolsReasoningStructured outputPrompt caching
Cheapest providers, measuredUSD / MTOK
| MODEL | PROVIDER | INPUT | OUTPUT | TTFT | TPS | SMOKE |
|---|---|---|---|---|---|---|
| Claude Fable 5.1 |  Google | $10.00 | $50.00 | — | — | — |
| Claude Fable 5.1 |  Amazon Bedrock | $10.00 | $50.00 | — | — | — |
| Claude Fable 5.1 |  Anthropic | $10.00 | $50.00 | — | — | — |
| GPT-5.6 Sol |  OpenAI | $1.00 | $5.00 | 3.4s° | 100° tok/s | — |
| GPT-5.6 Sol | Amazon Bedrock | $4.40 | $22.00 | — | — | — |
| GPT-5.6 Sol |  Azure | $5.00 | $30.00 | 3.2s° | 179° 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