# Gemini 3 Ultra vs GPT-5.5 (2026): Benchmarks, Price & Verdict | Alher Tech

> Gemini 3 Ultra vs GPT-5.5: 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/gemini-3-ultra-vs-gpt-5-5/
- Site: Alher Tech (custom software, AI agents and SEO engineering, https://alhertech.com/)
- Contact: https://alhertech.com/en/contact/

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|  | Gemini 3 Ultra | GPT-5.5 |
| --- | --- | --- |
| arenaElo | 1441 | 1432 |
| humanEval | 91 | 94.2 |
| sweBench | 66 | 66 |
| mmlu | 93.4 | 93 |
| gpqa | 72.6 | 68.7 |
| aime | 93 | 92 |
| Price in/out ($/M) | $18 / $72 | $12 / $48 |

## Our verdict

Ultra wins on context and video modality; GPT-5.5 wins on coding, tool-calling polish and ecosystem. Price is close. Let your cloud contract and your data locality constraints decide.

[Gemini 3 Ultra](https://alhertech.com/en/ai-comparison/gemini-3-ultra/) · [GPT-5.5](https://alhertech.com/en/ai-comparison/gpt-5-5/) · [All AI model comparisons](https://alhertech.com/en/ai-comparison/)