GPT-5.1 Thinking vs Qwen3.5-397B-A17B Comparison
Comparing GPT-5.1 Thinking and Qwen3.5-397B-A17B across benchmarks, pricing, and capabilities.
Performance Benchmarks
Comparative analysis across standard metrics
GPT-5.1 Thinking outperforms in 0 benchmarks, while Qwen3.5-397B-A17B is better at 2 benchmarks (GPQA, SWE-Bench Verified).
Qwen3.5-397B-A17B significantly outperforms across most benchmarks.
Arena Performance
Human preference votes
Pricing Analysis
Price comparison per million tokens
For input processing, GPT-5.1 Thinking ($1.25/1M tokens) is 2.1x more expensive than Qwen3.5-397B-A17B ($0.60/1M tokens).
For output processing, GPT-5.1 Thinking ($10.00/1M tokens) is 2.8x more expensive than Qwen3.5-397B-A17B ($3.60/1M tokens).
In conclusion, GPT-5.1 Thinking is more expensive than Qwen3.5-397B-A17B.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
GPT-5.1 Thinking accepts 400,000 input tokens compared to Qwen3.5-397B-A17B's 262,144 tokens. GPT-5.1 Thinking can generate longer responses up to 128,000 tokens, while Qwen3.5-397B-A17B is limited to 64,000 tokens.
Input Capabilities
Supported data types and modalities
Both GPT-5.1 Thinking and Qwen3.5-397B-A17B support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
GPT-5.1 Thinking
Qwen3.5-397B-A17B
License
Usage and distribution terms
GPT-5.1 Thinking is licensed under a proprietary license, while Qwen3.5-397B-A17B uses Apache 2.0.
License differences may affect how you can use these models in commercial or open-source projects.
Proprietary
Closed source
Apache 2.0
Open weights
Release Timeline
When each model was launched
GPT-5.1 Thinking was released on 2025-11-12, while Qwen3.5-397B-A17B was released on 2026-02-16.
Qwen3.5-397B-A17B is 3 months newer than GPT-5.1 Thinking.
Nov 12, 2025
4 months ago
Feb 16, 2026
3 weeks ago
3mo newerKnowledge Cutoff
When training data ends
Neither model specifies a knowledge cutoff date.
Unable to compare the recency of their training data.
Provider Availability
GPT-5.1 Thinking is available from OpenAI. Qwen3.5-397B-A17B is available from Novita. The availability of providers can affect quality of the model and reliability.
GPT-5.1 Thinking
Qwen3.5-397B-A17B
Outputs Comparison
Key Takeaways
Qwen3.5-397B-A17B
View detailsAlibaba Cloud / Qwen Team
Detailed Comparison
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