# Claude Mythos vs Gemini 3 Deep Think (2026): Benchmarks, Price & Verdict | Alher Tech

> Claude Mythos vs Gemini 3 Deep Think: head-to-head 2026 comparison across Arena Elo, MMLU, GPQA, HumanEval, context window and pricing. Verdict + use cases.

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|  | Claude Mythos | Gemini 3 Deep Think |
| --- | --- | --- |
| arenaElo | 1478 | 1429 |
| humanEval | 98.7 | 92.4 |
| sweBench | 93.9 | 64 |
| mmlu | 94.2 | 92.1 |
| gpqa | 94.6 | 84.3 |
| aime | 97.6 | 95 |
| Price in/out ($/M) | $25 / $125 | $14 / $56 |

## Our verdict

Both models target hard reasoning, but with different philosophies: Deep Think uses Gemini 3 Pro plus an inference-time thinking budget; Mythos is a from-scratch frontier model. Mythos leads GPQA by ~10 points and HumanEval by ~6, and beats Deep Think on competition math. Deep Think wins on availability: it ships under Google AI Ultra subscription with no Glasswing barrier.

[Claude Mythos](https://alhertech.com/en/ai-comparison/claude-mythos/) · [Gemini 3 Deep Think](https://alhertech.com/en/ai-comparison/gemini-3-deep-think/) · [All AI model comparisons](https://alhertech.com/en/ai-comparison/)