GPT-5.1 Codex High vs Qwen3.5-397B-A17B Comparison

Comparing GPT-5.1 Codex High and Qwen3.5-397B-A17B across benchmarks, pricing, and capabilities.

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Performance Benchmarks

Comparative analysis across standard metrics

No common benchmarks found

GPT-5.1 Codex High and Qwen3.5-397B-A17B don't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Qwen3.5-397B-A17B costs less

For input processing, GPT-5.1 Codex High ($1.25/1M tokens) is 2.1x more expensive than Qwen3.5-397B-A17B ($0.60/1M tokens).

For output processing, GPT-5.1 Codex High ($10.00/1M tokens) is 2.8x more expensive than Qwen3.5-397B-A17B ($3.60/1M tokens).

In conclusion, GPT-5.1 Codex High is more expensive than Qwen3.5-397B-A17B.*

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

Lowest available price from all providers

Mon Mar 16 2026 • llm-stats.com

GPT-5.1 Codex High

Input tokens$1.25

Output tokens$10.00

Best providerOpenAI

Qwen3.5-397B-A17B

Input tokens$0.60

Output tokens$3.60

Best providerNovita

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Context Window

Maximum input and output token capacity

GPT-5.1 Codex High accepts 400,000 input tokens compared to Qwen3.5-397B-A17B's 262,144 tokens. GPT-5.1 Codex High can generate longer responses up to 128,000 tokens, while Qwen3.5-397B-A17B is limited to 64,000 tokens.

GPT-5.1 Codex High

Input400,000 tokens

Output128,000 tokens

Qwen3.5-397B-A17B

Input262,144 tokens

Output64,000 tokens

Mon Mar 16 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both GPT-5.1 Codex High 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 Codex High

Text

Images

Audio

Video

Qwen3.5-397B-A17B

Text

Images

Audio

Video

License

Usage and distribution terms

GPT-5.1 Codex High 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.

GPT-5.1 Codex High

Proprietary

Closed source

Qwen3.5-397B-A17B

Apache 2.0

Open weights

Release Timeline

When each model was launched

GPT-5.1 Codex High 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 Codex High.

GPT-5.1 Codex High

Nov 12, 2025

4 months ago

Qwen3.5-397B-A17B

Feb 16, 2026

4 weeks ago

3mo 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

GPT-5.1 Codex High is available from OpenAI. Qwen3.5-397B-A17B is available from Novita. The availability of providers can affect quality of the model and reliability.