Prices verified 2026-09-02; Qwen 3.8 Max figures as of September 2026
Fable 5.1 pricing from Anthropic's September 2 release. Qwen 3.8 Max rates are Alibaba Cloud list prices as of September 2026.
Browse all Chinese model comparisonsFable 5.1 vs Qwen 3.8 Max · September 2026
Claude Fable 5.1 vs Qwen 3.8 Max
Anthropic's latest flagship against Alibaba's 2.4-trillion-parameter challenger — by specs, benchmarks, price, and deployment reality.
TL;DR
Fable 5.1 leads on agentic coding (87.7% SWE-bench) and complex multi-step reasoning. Qwen 3.8 Max wins on price (5x cheaper input), Chinese-language tasks, and mainland-China deployment. Pick by task, not by brand.
Specs at a glance
Fable 5.1 prices are Anthropic list rates; Qwen 3.8 Max rates are Alibaba figures as of September 2026.
| Spec | Claude Fable 5.1 | Qwen 3.8 Max |
|---|---|---|
| Model ID | claude-fable-5-1-20260902 | Qwen-3.8-Max |
| Input price (per M tokens) | $10.00 | $2.00 |
| Output price (per M tokens) | $50.00 | $6.00 |
| Prompt cache read (per M tokens) | $1.00 | $0.50 |
| Context window | 1M | 1M |
| Max output | 128K | 64K |
| License | Closed API (proprietary) | Commercial API (Alibaba Cloud) |
| Data retention | 30-day mandatory | Alibaba Cloud data residency |
| Extended thinking | Adaptive budget + effort tiers | Qwen thinking mode |
Fable 5.1 carries mandatory 30-day retention. Qwen 3.8 Max is available via Alibaba Cloud with mainland-China data residency options.
Benchmark comparison
Fable 5.1 leads on coding and reasoning; Qwen 3.8 Max leads on Chinese-language evaluation suites.
| Spec | Claude Fable 5.1 | Qwen 3.8 Max |
|---|---|---|
| SWE-bench Verified | 87.7% | 73.2% |
| FrontierMath | 38.2% | 28.6% |
| Humanity's Last Exam (HLE) | 61.4% | 49.1% |
| OSWorld | 89.6% | 71.0% |
| Chinese evaluation suite | 91.5% | 96.8% |
| Time to first token | Low (optimized streaming) | Fast (regional edge in CN) |
Fable 5.1 from Anthropic September 2, 2026. Qwen 3.8 Max SWE-bench 73.2% is vendor-reported by Alibaba.
How to decide
Route by task difficulty, language, and deployment constraints.
You need frontier reasoning and coding
Fable 5.1's 87.7% SWE-bench and 61.4% HLE are the strongest published scores. Qwen 3.8 Max trails on the hardest agentic benchmarks.
Your workload is Chinese-language heavy
Qwen 3.8 Max scores 96.8% on Chinese evaluation suites vs Fable 5.1's 91.5%. For mainland-China content, legal docs, or local compliance, Qwen is the natural fit.
You need the best price-to-performance ratio
At $2/$6 vs $10/$50, Qwen 3.8 Max is 5x cheaper on input. For high-volume production traffic that clears both quality bars, Qwen wins on cost.
You need mainland-China cloud deployment
Qwen 3.8 Max runs natively on Alibaba Cloud with data residency in China. Fable 5.1 requires overseas API access or a gateway like OpenRouter.
You need reliable multi-step tool calling
Fable 5.1's reduced safeguard fallback (~2.1%) and stronger agentic coding make it more reliable for autonomous terminal workflows.
The 5x price gap is real, but a cheaper model's failed attempts on hard agentic tasks aren't free.
Estimate the real cost
Run both models through your own token mix before you commit.