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Gemini 4 Argon vs GPT-6 Sol: which is smarter?

Gemini 4 Argon has an SI-IQ of 140 and GPT-6 Sol has 140. The table compares them area by area using only independent benchmark results.

Data as of Oct 18, 2026 · method 1.0.0

Metric	Gemini 4 Argon	GPT-6 Sol
SI-IQ	140137–143	140137–144
Reasoning	142	139
Math	138	143
Knowledge	148	138
Developer	Google DeepMind	OpenAI
Released	Sep 30, 2026	Sep 22, 2026
Access	Not stated	API access
Price in / out (USD per 1M tokens)	$2.00 / $10	$2.00 / $10
Benchmarks used	9	9

Gemini 4 ArgonGPT-6 Sol

Benchmarks every compared model was tested on

Raw scores as published by the evaluators.

Benchmark	Gemini 4 Argon	GPT-6 Sol
Chess Puzzles	59.0%	56.0%
FrontierMath Tier 4	78.0%	90.0%
FrontierMath Tiers 1–3	86.0%	89.8%
Furniture Assembly not in index	72.5%	58.3%
GPQA Diamond	96.4%	94.3%
GPQA Diamond (OpenRouter run)	96.5%	92.1%
Mystery Game Puzzles	64.0%	56.0%
OTIS Mock AIME 2024–2025	100.0%	100.0%
SimpleQA Verified	76.0%	60.7%
τ²-bench Airline (OpenRouter run)	78.7%	70.2%

The difference of 0 points is within the statistical uncertainty: the two models are roughly on par.

Data sources: Arena leaderboard dataset on Hugging Face (CC BY 4.0); Epoch AI, ‘Capabilities & benchmarking’ (CC BY 4.0); LiteLLM, model_prices_and_context_window.json (MIT); Source: OpenRouter (openrouter.ai), licensed under CC BY 4.0: reuse and republish with attribution to OpenRouter (licences and changes).