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Claude Sonnet 5 vs Qwen3.8-27B

Claude Sonnet 5 and Qwen3.8-27B are closely matched at 48.4 and 45.2 on the LLM Stats Score. Qwen3.8-27B is 3.8x cheaper per token.

Anthropic · Alibaba Cloud / Qwen Team · Updated for 2026

Which is better?

Claude Sonnet 5 and Qwen3.8-27B are closely matched on the overall LLM Stats Score at 48.4 and 45.2.

The models split the 6 individual benchmarks reported for both models evenly.

On price, Qwen3.8-27B is roughly 3.8x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Claude Sonnet 5 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 Sonnet 5

  • you process long inputs — it offers a 1,000,000 token context window

Choose Qwen3.8-27B

  • cost matters — it's about 3.8x cheaper per token
  • you want the most recent training data — it shipped Aug 2026
  • you need open weights you can self-host or fine-tune

At a glance

The differences that matter most.

Claude Sonnet 5
Anthropic
Qwen3.8-27B
Alibaba Cloud / Qwen Team
Core performance indexes
LLM Stats Score
48.4
#21
45.2
#30
Reasoning
47.8
#20
44.8
#30
Coding
37.1
#18
31.8
#40
Agents
31.8
#26
30.8
#32
Cost, coverage & limits
Benchmark wins
3 of 6
3 of 6
Input price
$2.00 / M
$0.40 / M
Output price
$10.00 / M
$3.00 / M
Context window
1,000,000
262,144

Capability indexes

Additional strengths measured across groups of related public benchmarks

4 shared
Index
Claude Sonnet 5
Qwen3.8-27B
Math
38.9#24
31.2#69
Vision
33.9#16
33.3#18
Tool use
24.2#37
23.2#42
Multimodal
32.8#19
37.3#6
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

23 reported for Claude Sonnet 5 · 26 for Qwen3.8-27B

6 shared

Claude Sonnet 5 outperforms in 3 benchmarks (DeepSWE 1.1, Humanity's Last Exam, SWE-Bench Pro), while Qwen3.8-27B is better at 3 benchmarks (CharXiv-R, OSWorld-Verified, SWE-Bench Multimodal).

Both models are evenly matched across the benchmarks.

Thu Sep 10 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Pricing Analysis

Price comparison per million tokens

Qwen3.8-27B costs less

For input processing, Claude Sonnet 5 ($2.00/1M tokens) is 5.0x more expensive than Qwen3.8-27B ($0.40/1M tokens).

For output processing, Claude Sonnet 5 ($10.00/1M tokens) is 3.3x more expensive than Qwen3.8-27B ($3.00/1M tokens).

In conclusion, Claude Sonnet 5 is more expensive than Qwen3.8-27B.*

* Using a 3:1 ratio of input to output tokens

Lowest available price from all providers
Thu Sep 10 2026 • llm-stats.com
Anthropic
Claude Sonnet 5
Input tokens$2.00
Output tokens$10.00
Best providerAnthropic
Alibaba Cloud / Qwen Team
Qwen3.8-27B
Input tokens$0.40
Output tokens$3.00
Best providerDeepinfra
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Claude Sonnet 5 accepts 1,000,000 input tokens compared to Qwen3.8-27B's 262,144 tokens. Qwen3.8-27B can generate longer responses up to 262,144 tokens, while Claude Sonnet 5 is limited to 64,000 tokens.

Anthropic
Claude Sonnet 5
Input1,000,000 tokens
Output64,000 tokens
Alibaba Cloud / Qwen Team
Qwen3.8-27B
Input262,144 tokens
Output262,144 tokens
Thu Sep 10 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both Claude Sonnet 5 and Qwen3.8-27B support multimodal inputs.

They are both capable of processing various types of data, offering versatility in application.

Claude Sonnet 5

Text
Images
Audio
Video

Qwen3.8-27B

Text
Images
Audio
Video

License

Usage and distribution terms

Claude Sonnet 5 is licensed under a proprietary license, while Qwen3.8-27B uses Apache 2.0.

License differences may affect how you can use these models in commercial or open-source projects.

Claude Sonnet 5

Proprietary

Closed source

Qwen3.8-27B

Apache 2.0

Open weights

Release Timeline

When each model was launched

Claude Sonnet 5 was released on 2026-06-30, while Qwen3.8-27B was released on 2026-08-14.

Qwen3.8-27B is 2 months newer than Claude Sonnet 5.

Claude Sonnet 5

Jun 30, 2026

2 months ago

Qwen3.8-27B

Aug 14, 2026

3 weeks ago

1mo newer

Knowledge Cutoff

When training data ends

Neither model specifies a knowledge cutoff date.

Unable to compare the recency of their training data.

No cutoff dates available

Provider Availability

Claude Sonnet 5 is available from Anthropic, DeepInfra. Qwen3.8-27B is available from DeepInfra, FriendliAI.

Claude Sonnet 5

anthropic logo
Anthropic
Input Price:Input: $2.00/1MOutput Price:Output: $10.00/1M
deepinfra logo
Deepinfra
Input Price:Input: $3.00/1MOutput Price:Output: $15.00/1M

Qwen3.8-27B

deepinfra logo
Deepinfra
Input Price:Input: $0.40/1MOutput Price:Output: $3.00/1M
friendli logo
FriendliAI
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Judge for yourself.

Run your own prompts against Claude Sonnet 5 and Qwen3.8-27B side-by-side, then vote on the output you prefer.

Claude Sonnet 5
✓ Preferred
Qwen3.8-27B
Open in Playground

FAQ

Common questions about Claude Sonnet 5 vs Qwen3.8-27B.

Which is better, Claude Sonnet 5 or Qwen3.8-27B?

Claude Sonnet 5 and Qwen3.8-27B are closely matched on the LLM Stats Score at 48.4 and 45.2. Claude Sonnet 5 is made by Anthropic and Qwen3.8-27B is made by Alibaba Cloud / Qwen Team. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Claude Sonnet 5 compare to Qwen3.8-27B in benchmarks?

Claude Sonnet 5 scores CharXiv-R: 88.3%, ChartMuseum: 86.7%, SWE-Bench Verified: 85.2%, BrowseComp: 84.7%, GDP.pdf: 81.6%. Qwen3.8-27B scores MathVision: 94.6%, OmniDocBench 1.5: 91.1%, LiveCodeBench v6: 90.3%, CharXiv-R: 90.2%, GPQA: 89.2%.

Is Claude Sonnet 5 cheaper than Qwen3.8-27B?

Qwen3.8-27B is 5.0x cheaper for input tokens. Claude Sonnet 5 costs $2.00/M input and $10.00/M output via anthropic. Qwen3.8-27B costs $0.40/M input and $3.00/M output via deepinfra.

What are the context window sizes for Claude Sonnet 5 and Qwen3.8-27B?

Claude Sonnet 5 supports 1.0M tokens and Qwen3.8-27B supports 262K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Claude Sonnet 5 and Qwen3.8-27B?

Key differences include LLM Stats Score (48.4 vs 45.2), context window (1.0M vs 262K), input pricing ($2.00 vs $0.40/M), licensing (Proprietary vs Apache 2.0). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude Sonnet 5 and Qwen3.8-27B?

Claude Sonnet 5 is developed by Anthropic and Qwen3.8-27B is developed by Alibaba Cloud / Qwen Team.

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