Claude Fable 5.1 vs Qwen3.8 Max
Claude Fable 5.1 leads the LLM Stats Score 57.0 to 52.3. Qwen3.8 Max is 8.1x cheaper per token.
Anthropic · Alibaba Cloud / Qwen Team · Updated for 2026
Which is better?
Claude Fable 5.1 leads the overall LLM Stats Score 57.0 to 52.3, ranking #1 overall.
In the 2 individual benchmarks reported for both models, Claude Fable 5.1 wins 2; this is a narrower head-to-head signal than the composite indexes.
On price, Qwen3.8 Max is roughly 8.1x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
Claude Fable 5.1 also accepts a larger context window (1,000,000 input tokens), making it the stronger choice for long documents and large codebases.
Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.
Choose Claude Fable 5.1
- overall performance matters — it scores 57.0 and ranks #1 on LLM Stats
- your work emphasizes reasoning and agents — it leads those capability indexes
- you value its reported benchmark strengths — it wins 2 of 2 exact shared results
- you process long inputs — it offers a 1,000,000 token context window
- you want the most recent training data — it shipped Sep 2026
Choose Qwen3.8 Max
- cost matters — it's about 8.1x cheaper per token
- you need open weights you can self-host or fine-tune
At a glance
The differences that matter most.
Capability indexes
Additional strengths measured across groups of related public benchmarks
Individual benchmarks
7 reported for Claude Fable 5.1 · 42 for Qwen3.8 Max
Claude Fable 5.1 outperforms in 2 benchmarks (AutomationBench, Humanity's Last Exam), while Qwen3.8 Max is better at 0 benchmarks.
Claude Fable 5.1 significantly outperforms across most benchmarks.
Human preference
Blind head-to-head votes and playground preference scores
Pricing Analysis
Price comparison per million tokens
For input processing, Claude Fable 5.1 ($10.00/1M tokens) is 6.1x more expensive than Qwen3.8 Max ($1.65/1M tokens).
For output processing, Claude Fable 5.1 ($50.00/1M tokens) is 10.1x more expensive than Qwen3.8 Max ($4.95/1M tokens).
In conclusion, Claude Fable 5.1 is more expensive than Qwen3.8 Max.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
Claude Fable 5.1 accepts 1,000,000 input tokens compared to Qwen3.8 Max's 256,000 tokens. Qwen3.8 Max can generate longer responses up to 131,072 tokens, while Claude Fable 5.1 is limited to 128,000 tokens.
Input capabilities
Documented input modalities across available providers
Both Claude Fable 5.1 and Qwen3.8 Max support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
Claude Fable 5.1
Qwen3.8 Max
License
Usage and distribution terms
Claude Fable 5.1 is licensed under a proprietary license, while Qwen3.8 Max uses Qwen3.8-Max License.
License differences may affect how you can use these models in commercial or open-source projects.
Proprietary
Closed source
Qwen3.8-Max License
Open weights
Release Timeline
When each model was launched
Claude Fable 5.1 was released on 2026-09-01, while Qwen3.8 Max was released on 2026-08-02.
Claude Fable 5.1 is 1 month newer than Qwen3.8 Max.
Sep 1, 2026
1 days ago
1mo newerAug 2, 2026
1 months ago
Knowledge Cutoff
When training data ends
Neither model specifies a knowledge cutoff date.
Unable to compare the recency of their training data.
Provider Availability
Claude Fable 5.1 is available from Anthropic. Qwen3.8 Max is available from DeepInfra, Fireworks, Novita, Together.
Claude Fable 5.1
Qwen3.8 Max
Outputs Comparison
Judge for yourself.
Run your own prompts against Claude Fable 5.1 and Qwen3.8 Max side-by-side, then vote on the output you prefer.
FAQ
Common questions about Claude Fable 5.1 vs Qwen3.8 Max.