Gemini 3.1 Pro Preview is Google's current flagship, released March 2026 with significant reasoning gains and native multimodal support. It competes directly with GPT-5.4 and Claude Opus 4.7 on frontier benchmarks at a slightly lower price point.
Pricing Breakdown
| Volume | Input Cost | Output Cost | Combined (50/50) |
|---|---|---|---|
| 1,000 tokens | $0.0020 | $0.0120 | $0.0070 |
| 10,000 tokens | $0.0200 | $0.1200 | $0.0700 |
| 100,000 tokens | $0.2000 | $1.2000 | $0.7000 |
| 1,000,000 tokens | $2.0000 | $12.0000 | $7.0000 |
Strengths
- ✓Google's latest flagship with major reasoning improvements
- ✓1M token context window
- ✓Native multimodal (text, image, video, audio)
- ✓Batch processing 50% discount available
Weaknesses
- ✗Preview model — pricing and behavior may change
- ✗Higher prices above 200K input context
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Frequently Asked Questions
How much does Gemini 3.1 Pro cost?
Gemini 3.1 Pro costs $2.00/1M per 1M input tokens and $12.00/1M per 1M output tokens.
What is Gemini 3.1 Pro's context window?
Gemini 3.1 Pro has a context window of 1M tokens, which means it can process up to 1,000,000 tokens in a single request.
Is Gemini 3.1 Pro open source?
No, Gemini 3.1 Pro is a proprietary model by Google and is not open source.
What is Gemini 3.1 Pro best used for?
Gemini 3.1 Pro is best suited for: reasoning, long-context, image-understanding, document-analysis, research. Google's latest flagship with major reasoning improvements.
What is Gemini 3.1 Pro's ELO score?
Gemini 3.1 Pro has an ELO score of 1410 on the LMSYS Chatbot Arena leaderboard, placing it among top-tier models.