# Gemini 4 Carbon takes the MathArena crown but costs 15 times more than GPT-6.1 Sol

Source: [The Decoder](https://the-decoder.com/gemini-4-carbon-takes-the-matharena-crown-but-costs-15-times-more-than-gpt-6-1-sol/) · 2026-11-14 · AI
Page: https://themorning.dev/story/gemini-4-carbon-takes-the-matharena-crown-but-costs-15-times-more-than-gpt-6-1-s-d586df59cc4df637
Kind: research · Impact: low

## In brief

- Google's Gemini 4 Carbon now tops the MathArena AI math benchmark.
- Anthropic's Fable 5.2 also ranks above GPT-6.1 Sol, so no OpenAI model leads for the first time in a while.
- Both models cost significantly more than GPT-6.1 Sol; the Decoder reports Gemini 4 Carbon costs 15 times more. In testing, Gemini ignored the time limit and almost never gave up.

## Why it matters

If you pick models for math-heavy work, the top benchmark score now comes with a much higher price, so cost per solved problem matters more than the leaderboard alone.

## Versions

- Gemini 4 Carbon
- GPT-6.1 Sol
- Fable 5.2

## Coverage

- [Gemini 4 Carbon takes the MathArena crown but costs 15 times more than GPT-6.1 Sol](https://the-decoder.com/gemini-4-carbon-takes-the-matharena-crown-but-costs-15-times-more-than-gpt-6-1-sol/) — The Decoder, 2026-11-14

Tags: ai, benchmarks, llm, math, gemini, pricing

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Brief generated by AI (claude-haiku-5-5) from the reporting listed under Coverage. Headlines belong to their publishers. The Morning Dev – https://themorning.dev