---
title: "DeepSeek-V4 Flash 0731 vs GPT-5.6 Luna on DeepSWE: Cost and Coding"
slug: "deepseek-v4-flash-0731-vs-gpt-56-luna-auf-deepswe-kosten-und-coding"
date: 2026-08-06
category: ai-provider
tags: []
language: en
sources_count: 1
featured: false
publisher: AInauten News
url: https://news.ainauten.com/en/story/deepseek-v4-flash-0731-vs-gpt-56-luna-auf-deepswe-kosten-und-coding
---

# DeepSeek-V4 Flash 0731 vs GPT-5.6 Luna on DeepSWE: Cost and Coding

**Published**: 2026-08-06 | **Category**: ai-provider | **Sources**: 1

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## TL;DR

Together AI ran 900 DeepSWE rollouts across DeepSeek-V4 Flash 0731 and GPT-5.6 Luna to compare the two models head to head on coding.

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## Summary

Together AI ran 900 DeepSWE rollouts across DeepSeek-V4 Flash 0731 and GPT-5.6 Luna to compare the two models head to head on coding. Luna leads on pass@1 by 14 points, solving noticeably more tasks on the first attempt. DeepSeek-V4 Flash wins on economics, delivering 4.8x the solves per dollar. For high-volume batch coding work, the deciding factor becomes the budget per task.

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## Why it matters

Together AI ran 900 DeepSWE rollouts across DeepSeek-V4 Flash 0731 and GPT-5.6 Luna to compare the two models head to head on coding.

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## Key Points

- Together AI ran 900 DeepSWE rollouts across DeepSeek-V4 Flash 0731 and GPT-5.6 Luna to compare the two models head to head on coding.
- Luna leads on pass@1 by 14 points, solving noticeably more tasks on the first attempt.
- DeepSeek-V4 Flash wins on economics, delivering 4.8x the solves per dollar.
- For high-volume batch coding work, the deciding factor becomes the budget per task.

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## Nauti's Take

The cost advantage of DeepSeek-V4 Flash is real: 4.8x the solves per dollar changes the math for anything that runs at volume, from migrations to test coverage. The limit shows up in quality, since 14 points less on pass@1 means more retries and more review time, which can eat the savings. Teams running batch coding work should redo the math for their own task mix, while anyone who depends on getting it right the first time stays with Luna.

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## FAQ

**Q:** What is DeepSeek-V4 Flash 0731 vs GPT-5.6 Luna on DeepSWE about?

**A:** Together AI ran 900 DeepSWE rollouts across DeepSeek-V4 Flash 0731 and GPT-5.6 Luna to compare the two models head to head on coding.

**Q:** Why does it matter?

**A:** Together AI ran 900 DeepSWE rollouts across DeepSeek-V4 Flash 0731 and GPT-5.6 Luna to compare the two models head to head on coding.

**Q:** What are the key takeaways?

**A:** Together AI ran 900 DeepSWE rollouts across DeepSeek-V4 Flash 0731 and GPT-5.6 Luna to compare the two models head to head on coding.. Luna leads on pass@1 by 14 points, solving noticeably more tasks on the first attempt.. DeepSeek-V4 Flash wins on economics, delivering 4.8x the solves per dollar.

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## Related Topics

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## Sources

- [DeepSeek-V4 Flash 0731 vs GPT-5.6 Luna on DeepSWE: Cost and Coding](https://www.together.ai/blog/deepseek-v4-flash-0731-vs-gpt-5-6-luna-on-deepswe-cost-and-coding) - Together AI Blog

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## About This Article

This article is a synthesis of 1 sources, curated and summarized by AInauten News. We aggregate AI news from trusted sources and provide bilingual (German/English) coverage.

**Publisher**: [AInauten](https://www.ainauten.com) | **Site**: [news.ainauten.com](https://news.ainauten.com)

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*Last Updated: 2026-08-07*