Gemini 4 Hydrogen vs GPT-6.1 Sol
How does Gemini 4 Hydrogen (Google) compare against GPT-6.1 Sol (OpenAI)? Side-by-side scores, capability ratings and pricing, plus a clear verdict.
🏆 Quick verdict
Gemini 4 Hydrogen comes out ahead with an AIVerso score of 97 vs 97 and an aggregate capability rating of 653 vs 644 across 7 categories. GPT-6.1 Sol still leads on Math & Logic and Programming.
Overall winner
Gemini 4 Hydrogen
by Google
Score: 97/100
Price$1.50/$7.50 per 1M tokens
Pricing detailsAPI $1.50/$7.50 per 1M (cache $0.075) · free tier in the Gemini API · Gemini app: in the model picker, free users get it via automatic model selection
Context window1M
Free tierYes
API accessYes
Open sourceNo
BenchmarksAA Intelligence Index v5: 54
Headline factsGoogle’s new everyday model (generally available Nov 12) · AA Intelligence Index 54 at xhigh (51 at default) – above Argon · about 2.5× faster than Gemini 3.8 Flash (per Google) · API $1.50/$7.50 per 1M · free tier · 1M context
Try Gemini 4 Hydrogen →
Full Gemini 4 Hydrogen profile →
GPT-6.1 Sol
by OpenAI
Score: 97/100
Price$2/$10 per 1M tokens
Context window1.05M
Free tierNo
API accessYes
Open sourceNo
BenchmarksAA Intelligence Index v5: 55
Headline factsNearly matches GPT-6 Astra on coding & computer use (OpenAI) at a fifth of the task cost · AA Intelligence Index 55 · $2/$10 per 1M · 1.05M context
Try GPT-6.1 Sol →
Full GPT-6.1 Sol profile → 📊 Capability ratings
AIVerso capability ratings (0–100) per category — an editorial summary informed by public benchmark results. Higher is better.
Category
Gemini 4 Hydrogen
GPT-6.1 Sol
Math & Logice.g. AIME, MATH-500
92
93
Programminge.g. SWE-bench, LiveCodeBench
91
92
Reasoninge.g. GPQA, ARC
94
92
Knowledgee.g. MMLU-Pro
94
90
Long Contexte.g. MRCR, needle tests
96
94
Instruction Followinge.g. IFEval
93
92
Agent Capabilitye.g. Terminal-Bench, tool use
93
91
Why Gemini 4 Hydrogen
Has a free tier
Lower API price ($1.50/$7.50 per 1M tokens vs $2/$10 per 1M tokens)
Leads on Reasoning (94 vs 92)
Leads on Knowledge (94 vs 90)
Leads on Long Context (96 vs 94)
Leads on Instruction Following (93 vs 92)
Leads on Agent Capability (93 vs 91)
Why GPT-6.1 Sol
Larger context window (1.05M vs 1M)
Leads on Math & Logic (93 vs 92)
Leads on Programming (92 vs 91)
Nearly matches GPT-6 Astra on coding & computer use (OpenAI) at a fifth of the task cost
AA Intelligence Index 55
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❓ Frequently Asked Questions
Which is better: Gemini 4 Hydrogen or GPT-6.1 Sol?
Gemini 4 Hydrogen has the higher AIVerso score (97 vs 97). The better choice still depends on your use case — GPT-6.1 Sol leads on Math & Logic and Programming.
How much does Gemini 4 Hydrogen cost compared to GPT-6.1 Sol?
Gemini 4 Hydrogen: $1.50/$7.50 per 1M tokens (API $1.50/$7.50 per 1M (cache $0.075) · free tier in the Gemini API · Gemini app: in the model picker, free users get it via automatic model selection). GPT-6.1 Sol: $2/$10 per 1M tokens. Only Gemini 4 Hydrogen has a free tier.
What context window does each support?
Gemini 4 Hydrogen: 1M tokens. GPT-6.1 Sol: 1.05M tokens. The context window determines how much text, code or chat history a model can process at once.
Are Gemini 4 Hydrogen and GPT-6.1 Sol open source?
Gemini 4 Hydrogen is a closed, proprietary model. GPT-6.1 Sol is a closed, proprietary model.
How we compare: Scores and capability ratings are based on public benchmarks and provider documentation — not on commission rates. Last updated: November 13, 2026.