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Qwen4-Max-Preview vs SWE-2 Flash

Comparing Qwen4-Max-Preview and SWE-2 Flash across benchmarks, pricing, and capabilities.

Alibaba Cloud / Qwen Team · Cognition · Updated for 2026

Which is better?

Qwen4-Max-Preview and SWE-2 Flash trade strengths across price, capabilities, and technical limits. The better choice depends on the workload.

Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.

Choose Qwen4-Max-Preview

  • you want the most recent training data — it shipped Nov 2026

Choose SWE-2 Flash

  • you are already invested in the Cognition ecosystem

At a glance

The differences that matter most.

Qwen4-Max-Preview
Alibaba Cloud / Qwen Team
SWE-2 Flash
Cognition
Benchmark wins
—
—
Input price
— / M
— / M
Output price
— / M
— / M
Context window
—
—

Individual benchmarks

0 reported for Qwen4-Max-Preview · 7 for SWE-2 Flash

No common benchmarks found

Qwen4-Max-Preview and SWE-2 Flashdon't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Human preference

Blind head-to-head votes and playground preference scores

Input capabilities

Documented input modalities across available providers

Qwen4-Max-Preview supports multimodal inputs, whereas SWE-2 Flash does not.

Qwen4-Max-Preview can handle both text and other forms of data like images, making it suitable for multimodal applications.

Qwen4-Max-Preview

Text
Images
Audio
Video

SWE-2 Flash

Text
Images
Audio
Video

License

Usage and distribution terms

Both models are licensed under proprietary licenses.

Both models have usage restrictions defined by their respective organizations.

Qwen4-Max-Preview

Proprietary

Closed source

SWE-2 Flash

Proprietary

Closed source

Release Timeline

When each model was launched

Qwen4-Max-Preview was released on 2026-11-11, while SWE-2 Flash was released on 2026-11-04.

Qwen4-Max-Preview is 0 month newer than SWE-2 Flash.

Qwen4-Max-Preview

Nov 11, 2026

1 days ago

1w newer
SWE-2 Flash

Nov 4, 2026

1 weeks ago

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

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

Run your own prompts against Qwen4-Max-Preview and SWE-2 Flash side-by-side, then vote on the output you prefer.

Qwen4-Max-Preview
✓ Preferred
SWE-2 Flash
Open in Playground

FAQ

Common questions about Qwen4-Max-Preview vs SWE-2 Flash.

Which is better, Qwen4-Max-Preview or SWE-2 Flash?

Qwen4-Max-Preview (Alibaba Cloud / Qwen Team) and SWE-2 Flash (Cognition) each have strengths in different areas. Compare their benchmark scores, pricing, context windows, and capabilities above to determine which fits your needs.

How does Qwen4-Max-Preview compare to SWE-2 Flash in benchmarks?

SWE-2 Flash scores Terminal-Bench 2.1: 89.2%, DeepSWE 1.1: 60.1%, SWE Atlas - Codebase QnA: 50.0%, FrontierCode 1.1: 45.5%, ExploitBench: 34.8%.

What are the main differences between Qwen4-Max-Preview and SWE-2 Flash?

Key differences include multimodal support (yes vs no). See the full comparison above for benchmark-by-benchmark results.

Who makes Qwen4-Max-Preview and SWE-2 Flash?

Qwen4-Max-Preview is developed by Alibaba Cloud / Qwen Team and SWE-2 Flash is developed by Cognition.

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