Model comparison

Claude Fable 5.1 vs Qwen3.8 Max (0902)

Compare pricing, context windows and capabilities from OpenRouter. Open either model’s page to check availability and try it online.

anthropicClaude Fable 5.1newanthropic/claude-fable-5.1qwenQwen3.8 Max (0902)newqwen/qwen3.8-max-0902

Measured intelligence and task cost

Two current intelligence leaders from different providers. Artificial Analysis index v4.3, updated 2026-09-21.

Claude Fable 5.1 (Adaptive Reasoning, Max Effort, Default Fallback): 53.4 intelligence · $7.63 / AA task

Qwen3.8 Max (0902): 45.4 intelligence · $5.41 / AA task

Highest reasoning effort with both measurements available. Benchmark task costs are not OpenCraft task quotes; your settings and workload can differ.

Input price /M$10.00$2.005× cheaper

Output price /M$50.00$6.008.3× cheaper

Cache read /M$0.25$0.25

Context window1M1M

Catalog date1 Sept 20263 Sept 2026

What the same turn costs

Estimates from published token rates — stated token counts, not measurements.

Quick answer2K tokens in, 600 outClaude Fable 5.1$0.05Qwen3.8 Max (0902)$0.00766.6× cheaper

10-slide deck build60K tokens in, 9K outClaude Fable 5.1$1.05Qwen3.8 Max (0902)$0.1746× cheaper

150-page PDF read200K tokens in, 4K outClaude Fable 5.1$2.20Qwen3.8 Max (0902)$0.4245.2× cheaper

Capabilities

Bothtool-usevisionreasoning

Claude Fable 5.1: text, image, file → text · Qwen3.8 Max (0902): text, image, video → text

Which model should you use?

Start with the token cost for your workload, the context you need, and supported input types. A lower price or larger context window does not establish better answer quality.

To compare answers, open each model in a separate chat and use the same prompt. Token tables use published specs and estimates; any measured AA results above are a separate benchmark.

Try Claude Fable 5.1 — pricing and availability Try Qwen3.8 Max (0902) — pricing and availability