# GPT-5 vs DeepSeek R1 (2026): Benchmarks, Price & Verdict | Alher Tech

> GPT-5 vs DeepSeek R1: head-to-head 2026 comparison across Arena Elo, MMLU, GPQA, HumanEval, context window and pricing. Verdict + use cases.

- Canonical page: https://alhertech.com/en/ai-comparison/gpt-5-vs-deepseek-r1/
- Site: Alher Tech (custom software, AI agents and SEO engineering, https://alhertech.com/)
- Contact: https://alhertech.com/en/contact/

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|  | GPT-5 | DeepSeek R1 |
| --- | --- | --- |
| arenaElo | 1412 | 1389 |
| humanEval | 91.6 | 90.2 |
| sweBench | 65 | 49.2 |
| mmlu | 91.5 | 90.8 |
| gpqa | 63.8 | 71.5 |
| aime | 92 | 79.8 |
| Price in/out ($/M) | $1.25 / $10 | $0.7 / $2.5 |

## Our verdict

GPT-5 is more polished, multimodal and easier to integrate; DeepSeek R1 wins on pure reasoning and costs roughly 5× less per million tokens. Most teams should default to GPT-5; reasoning-heavy, cost-sensitive stacks should A/B DeepSeek.

[GPT-5](https://alhertech.com/en/ai-comparison/gpt-5/) · [DeepSeek R1](https://alhertech.com/en/ai-comparison/deepseek-r1/) · [All AI model comparisons](https://alhertech.com/en/ai-comparison/)