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Home/Claude Fable 5.1 vs Qwen 3.8 Max
Winner: Claude Fable 5.1Anthropic vs Alibaba

Claude Fable 5.1 vs Qwen 3.8 Max

Claude Fable 5.1 wins on coding (100 vs 93) and writing quality. Qwen 3.8 Max wins on price ($2 vs $10/1M input). For most workflows, Claude Fable 5.1 is the stronger default — new frontier leader — better than fable 5 on every published benchmark, and cheaper to run.

Last verified Sep 1, 2026/Model data modified Sep 1, 2026
Rankings refresh dailyScored on 6 criteriaNo paid rankings
AnthropicPremium
Input cost
$10.00/1M
Context
1M tokens
Speed
Deliberate

Clear recommendation block

The safest Claude Fable 5.1 vs Qwen 3.8 Max default, the cheaper option worth trying first, and the specialist pick — before you read the detail below.

Best overall model

Claude Fable 5.1

View
Why this recommendation

Claude Fable 5.1 is the strongest answer here for Claude Fable 5.1 vs Qwen 3.8 Max — pick it when quality of output matters more than the $10.00/1M/1M input you pay for it.

AnthropicPremium
Best for
Frontier agentic coding, long-horizon autonomous work, and agentic scientific research
Price
$10.00/1M
Context
1M tokens
Best value model

Qwen 3.8 Max

View
Why this recommendation

Qwen 3.8 Max handles the same job for about 87% less per token. Start here and only move up if the output is not good enough.

AlibabaBalanced
Best for
Multimodal and vision-heavy workloads at scale
Price
$2.00/1M
Context
1M tokens
Best for speed

Qwen 3.8 Max

View
Why this recommendation

Qwen 3.8 Max is the fastest of these for Claude Fable 5.1 vs Qwen 3.8 Max — worth it when latency is what the reader notices, not the last few points of reasoning depth.

AlibabaBalanced
Best for
Multimodal and vision-heavy workloads at scale
Price
$2.00/1M
Context
1M tokens

Why this page recommends it

Claude Fable 5.1 leads on coding with a score of 100 vs 93 for Qwen 3.8 Max.

Qwen 3.8 Max is cheaper at $2/1M input tokens vs $10/1M for Claude Fable 5.1.

Claude Fable 5.1 is the stronger default for coding tasks.

Decision notes

Claude Fable 5.1 is the safer default: it is built for frontier agentic coding, long-horizon autonomous work, and agentic scientific research, which covers most of what people bring to this comparison.

Choose Qwen 3.8 Max when your work is mostly multimodal and vision-heavy workloads at scale — that is the workload it was tuned for.

Qwen 3.8 Max is the more cost-efficient option at $2/1M input — Claude Fable 5.1 costs 5x more per input token, so the gap is worth taking seriously wherever token volume rather than peak quality drives the bill.

Interactive decision lab

Test the recommendation against your priority

Switch the scoring lens to see whether the Claude Fable 5.1 vs Qwen 3.8 Max answer changes when cost, speed, or long-document depth leads the decision.

#1Claude Fable 5.191 pts
#2Qwen 3.8 Max87 pts
Quality first

Claude Fable 5.1

Anthropic / Premium / Sep 1, 2026

91

New frontier leader — better than Fable 5 on every published benchmark, and cheaper to run.

Ranks models by the broadest mix of coding, writing, research, and long-context usefulness.

Cost
$10.00/1M
$50.00/1M out
Speed
Deliberate
2/5 score
Context
1M tokens
input window
View model
Data-backed recommendation
Avoid this pick if

You need low latency, or your workload is uncached and cost-sensitive — Claude Opus 5 is half the base price and within a few points on agentic coding.

Recommended comparisons

Where the Claude Fable 5.1 vs Qwen 3.8 Max recommendation shifts once you weigh price or latency differently.

AnthropicPremiumWinner: Claude Fable 5.1

Claude Fable 5.1

New frontier leader — better than Fable 5 on every published benchmark, and cheaper to run.

Best use case
Frontier agentic coding, long-horizon autonomous work, and agentic scientific research
Input
$10.00/1M
Pricing
Premium
Speed
Deliberate
Context
1M tokens
Coding leaderFrontierAgentic
AlibabaBalancedOption 2

Qwen 3.8 Max

Best Chinese flagship — beats GPT-5.6 Sol on coding, #2 globally for vision.

Best use case
Multimodal and vision-heavy workloads at scale
Input
$2.00/1M
Pricing
Balanced
Speed
Balanced
Context
1M tokens
Open weightsMultimodalVision

Side-by-side specs

List prices and published scores — the numbers this page's pick is built from.

ModelInputOutputEst. monthContextSpeedCodingWritingResearch
Claude Fable 5.1Anthropic$10.00/1M$50.00/1M$2001M tokensDeliberate10098100
Qwen 3.8 MaxAlibaba$2.00/1M$6.00/1M$321M tokensBalanced938588

Scores out of 100 — how we evaluate models. “Est. month” is 10M in / 2M out at list price: a ceiling, no discounts.

The case for each model

Why each one is on the shortlist for Claude Fable 5.1 vs Qwen 3.8 Max, what it is genuinely good at, and where we would steer you away from it.

Claude Fable 5.1

Winner: Claude Fable 5.1Anthropic

Our pick for Claude Fable 5.1 vs Qwen 3.8 Max. It scores 100/100 on the coding axis we weight this page by, and nothing else in this shortlist matches it on output quality.

Anthropic's September 1, 2026 frontier release and the new capability ceiling for coding, agents, and scientific work. Base pricing is unchanged at $10/$50, but cache reads dropped 75% to $0.25/1M — roughly 25% cheaper on typical workloads and up to 45% cheaper on agentic ones. 1M context, 128K output, adaptive thinking always on.

Input
$10.00/1M
Output
$50.00/1M
Context
1M tokens
Speed
Deliberate

What people actually use it for

  • Agentic scientific research — 52.6% on Terminal-Bench-Science 0.1, more than double Fable 5's 24.7%
  • Long-running autonomous coding agents that plan, run, and debug across a whole repository
  • Cache-heavy agent loops where the 75% cache-read cut ($1.00 → $0.25 per 1M) is the real saving

Where it wins

  • 52.6% Terminal-Bench-Science 0.1 — 2.1x Fable 5 (24.7%), well clear of Opus 5 (29.0%) and GPT-5.6 Sol (22.4%)
  • 55.8% Terminal-Bench 4.0 agentic coding, ahead of Opus 5 (52.3%) and Fable 5 (42.0%)
  • Cache reads cut 75% to $0.25/1M — ~25% cheaper for typical use, ~45% for heavily agentic work
  • Independent Vals AI evaluation ranks it #1 of 51 on the Vals Index, #1 on LiveCodeBench (90.5%) and MMLU Pro (92.4%)
  • 1M-token context and 128K max output at standard rates, with adaptive thinking always enabled

Where it falls down

  • Base rates are still $10/$50 per 1M — double Claude Opus 5 for anything that is not cache-heavy
  • Anthropic published no SWE-bench Verified or SWE-bench Pro figure for 5.1 at launch
  • On Claude Pro it only runs on pay-as-you-go credits; Max includes it up to 50% of weekly limits
  • Deliberate, high-latency profile — the wrong choice for interactive, latency-bound apps

Skip it if

You need low latency, or your workload is uncached and cost-sensitive — Claude Opus 5 is half the base price and within a few points on agentic coding.

Our verdict

The new frontier leader, and the rare upgrade that costs less than the model it replaces. Base $10/$50 pricing did not move, but a 75% cut to cache reads makes typical workloads ~25% cheaper than Fable 5 and heavily agentic ones ~45% cheaper — while more than doubling Fable 5 on agentic science and beating Opus 5 on agentic coding. If you were already on Fable 5, switching is a straight win. If you were on Opus 5 for the price, it still costs 2x on uncached tokens.

Full pricing, benchmark table and release notes on the Claude Fable 5.1 page.

Qwen 3.8 Max

Alibaba

Where most budgets should land for Claude Fable 5.1 vs Qwen 3.8 Max — about 87% less per token than Claude Fable 5.1, and still 93/100 on the coding axis.

Alibaba's largest model ever — a 2.4-trillion-parameter MoE (95B active) multimodal flagship that beat GPT-5.6 Sol on SWE-bench Pro and ranks #2 globally for vision.

Input
$2.00/1M
Output
$6.00/1M
Context
1M tokens
Speed
Balanced

What people actually use it for

  • Agentic coding — 67.7 SWE-bench Pro, ahead of GPT-5.6 Sol (64.6) and near Claude Opus 4.8 (69.2)
  • Vision-heavy pipelines: image and video understanding ranked #2 globally on Arena.AI
  • Large-scale deployments where 95B active params keep inference cost moderate

Where it wins

  • SWE-bench Pro 67.7 — ahead of GPT-5.6 Sol and close to Claude Opus 4.8
  • #2 globally on Arena.AI vision (behind only a Claude Fable 5 variant); #1 Chinese model for text
  • First Alibaba open-weights release at this scale — 2.4T MoE at $2/$6 per 1M

Where it falls down

  • Well behind Claude Fable 5 on SWE-bench Pro (67.7 vs 80.0) and behind several Anthropic models on text rankings
  • No independent third-party benchmarks at GA — early claims are largely Alibaba-reported

Skip it if

You need independently verified benchmarks or Western data residency.

Our verdict

The strongest Chinese multimodal flagship and a legitimate SWE-bench Pro upset over GPT-5.6 Sol. If vision matters, only Fable 5-class models beat it — at 3–8x the price. Wait for independent evals before betting production on the self-reported numbers.

Full pricing, benchmark table and release notes on the Qwen 3.8 Max page.

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Anthropic
Claude Fable 5.1New frontier leader — better than Fable 5 on every published benchmark, and cheaper…Read guide
Alibaba
Qwen 3.8 MaxBest Chinese flagship — beats GPT-5.6 Sol on coding, #2 globally for vision.Read guide
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FAQ

Is Claude Fable 5.1 better than Qwen 3.8 Max?

Claude Fable 5.1 wins on more of the categories we score — coding, research, long context — so it is the better default of the two. Qwen 3.8 Max is the better pick when your work is mostly multimodal and vision-heavy workloads at scale. Neither is universally "better": Claude Fable 5.1 is aimed at frontier agentic coding and long-horizon autonomous work, Qwen 3.8 Max at multimodal and vision-heavy workloads at scale.

Which is cheaper — Claude Fable 5.1 or Qwen 3.8 Max?

Qwen 3.8 Max is cheaper at $2/1M input and $6/1M output. Claude Fable 5.1 costs $10/1M input and $50/1M output.

Which has a larger context window — Claude Fable 5.1 or Qwen 3.8 Max?

Both Claude Fable 5.1 and Qwen 3.8 Max have the same 1M context window.

Is Claude Fable 5.1 or Qwen 3.8 Max better for coding?

Claude Fable 5.1 is better for coding with a score of 100 vs Qwen 3.8 Max's 93 (out of 100). GPT-6 Astra is the overall coding leader in this directory at 100/100.

Which is faster — Claude Fable 5.1 or Qwen 3.8 Max?

Qwen 3.8 Max is faster with a balanced speed rating (score: 3) vs Claude Fable 5.1's deliberate rating (score: 2). Speed matters most for interactive and high-throughput work; for batch jobs the Claude Fable 5.1 latency penalty is usually invisible.

What are the downsides of Claude Fable 5.1?

Base rates are still $10/$50 per 1M — double Claude Opus 5 for anything that is not cache-heavy. Anthropic published no SWE-bench Verified or SWE-bench Pro figure for 5.1 at launch. On Claude Pro it only runs on pay-as-you-go credits; Max includes it up to 50% of weekly limits. Avoid it if you need low latency, or your workload is uncached and cost-sensitive — Claude Opus 5 is half the base price and within a few points on agentic coding. That is the main case for looking at Qwen 3.8 Max instead.

What are the downsides of Qwen 3.8 Max?

Well behind Claude Fable 5 on SWE-bench Pro (67.7 vs 80.0) and behind several Anthropic models on text rankings. No independent third-party benchmarks at GA — early claims are largely Alibaba-reported. Avoid it if you need independently verified benchmarks or Western data residency. Against Claude Fable 5.1 specifically, the gap shows up most on coding (100 vs 93).

What does a month of real work cost on Claude Fable 5.1 vs Qwen 3.8 Max?

Take a moderate workload of 10M input and 2M output tokens a month. Claude Fable 5.1 runs $200.00 (at $10/1M in and $50/1M out); Qwen 3.8 Max runs $32.00 (at $2/1M in and $6/1M out). That is a $168.00/month difference — Qwen 3.8 Max is the cheaper of the two at this volume, and the gap scales linearly as you send more. Output tokens dominate the bill on both, so prompt length matters far less than response length.

Can I use Claude Fable 5.1 and Qwen 3.8 Max together?

Yes, and for most teams that beats picking one. A common split is Claude Fable 5.1 for frontier agentic coding and long-horizon autonomous work, with Qwen 3.8 Max handling multimodal and vision-heavy workloads at scale. Routing high-volume, low-stakes calls to Qwen 3.8 Max at $2/1M and reserving Claude Fable 5.1 for the hard cases is usually the cheapest arrangement that does not cost you quality.