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Gemini 3.1 Pro 🆓 Best Free

by Google · Text & Chat · Image · Video · Code

Leads GPQA Diamond at 94.3% · 1M context · free via Google AI Studio.

96/100AIVerso score
#5 of 49in Text & Chat
Free – $20/moStarting price
YesFree tier
Try Gemini 3.1 Pro →Compare with alternatives →

At a glance

ProviderGoogle
CategoryText & Chat, Image, Video, Code
Starting priceFree – $20/mo
Pricing detailsFree – $249/mo
Free tierYes
API accessYes
Open sourceNo
Context window1M tokens
Mobile appiOS & Android
Browser extensionYes

Key facts

Capability ratings

Math & Logice.g. AIME, MATH-500
92
Programminge.g. SWE-bench, LiveCodeBench
81
Reasoninge.g. GPQA, ARC
94
Knowledgee.g. MMLU-Pro
90
Long Contexte.g. MRCR, needle tests
96
Instruction Followinge.g. IFEval
93
Agent Capabilitye.g. Terminal-Bench, tool use
79

AIVerso capability ratings (0–100), an editorial summary informed by public benchmark results. Higher is better.

Features

✓ Image generation
✗ Video generation
✓ Native audio model
✓ Web search
✓ Voice mode (app)
✓ PDF analysis

Strengths

Top-tier AIVerso score (96/100)
Versatile — covers Text & Chat, Image, Video, Code
Free tier available
Large 1M token context window
Built-in web search
API access for developers

Limitations

Closed model — cannot be self-hosted

Best alternatives to Gemini 3.1 Pro

Claude Fable 5.1
Anthropic · $10/$50 per 1M tokens — Higher score (99 vs 96)
99
GPT-6 Astra
OpenAI · From $20/mo (Plus) — Higher score (98 vs 96)
GPT-6 Astra vs Gemini 3.1 Pro →
98
Fugu Ultra v2
Sakana AI · $5/$30 per 1M tokens — Higher score (97 vs 96)
97
MiMo-V2.6-Pro
Xiaomi · Free (open weights) · $0.44/$0.87 per 1M · free tier — Open source
96
Kimi K3
Moonshot AI · Free – API · free tier — Open source
96

🔗 Comparisons & guides

Claude Opus 5.5 vs Gemini 3.1 ProHead-to-head comparison
GPT-6 Astra vs Gemini 3.1 ProHead-to-head comparison
Gemini 3.1 Pro vs DeepSeek V4-ProHead-to-head comparison
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❓ Frequently Asked Questions

Is Gemini 3.1 Pro free?

Yes — Gemini 3.1 Pro has a free tier. Pricing: Free – $20/mo (details: Free – $249/mo).

What are the best alternatives to Gemini 3.1 Pro?

The highest-rated AI chatbots & text models from other providers on AIVerso are Claude Fable 5.1 (99/100), GPT-6 Astra (98/100), Fugu Ultra v2 (97/100).

Does Gemini 3.1 Pro have an API?

Yes, Gemini 3.1 Pro can be used via an API.

Is Gemini 3.1 Pro open source?

No, Gemini 3.1 Pro is a closed, proprietary model from Google.

How does AIVerso rate Gemini 3.1 Pro?

Gemini 3.1 Pro scores 96/100 on AIVerso and ranks #5 of 49 in Text & Chat. Scores combine public benchmark results, features and pricing; commissions never influence them.

How we rate: Scores and capability ratings are based on public benchmarks, provider documentation, features and pricing — not on commission rates. Prices can change; check the provider's site before buying. Last updated: September 29, 2026.