google
Google: Gemini 3.1 Pro Preview
The Google Gemini 3.1 Pro Preview is an AI model that supports input through various modalities including audio, file, image, text, and video. It also allows for reasoning and tool support. The model has a context length of 1048576 tokens and a maximum completion token count of 65536. This model may be worth considering for those who need to process large amounts of diverse data. At $2.0 per million input tokens and $12.0 per million output tokens, it is positioned as a premium offering. Its blended benchmark score of 69.4 across two independent benchmarks suggests that it performs competitively in certain areas, although its coverage on specific metrics may be limited due to only two available scores.
Quality Score
100/100
price + capability + benchmarks
Input Price
$2.00
per 1M tokens · checked 2026-10-22
Output Price
$12.00
per 1M tokens · checked 2026-10-22
Context Window
1,048,576
tokens
Benchmark results
Independent, published benchmarks. Blended score 65.5 across 2 benchmarks, last refreshed 2026-10-22. How scoring works →
| Benchmark | Measures | Score |
|---|---|---|
| AI Index | broad capability composite | 49.0 |
| EQ-Bench | emotional understanding in dialogue | 74.3 |
- Model ID
- google/gemini-3.1-pro-preview
- Vendor
- Released
- February 2026
- Tokenizer
- Gemini
- Input Modalities
- audio, file, image, text, video
- Output Modalities
- text
- Max Output
- 65,536 tokens
- Tool Calling
- ✓ supported
- Structured Output
- ✓ supported
- Reasoning Mode
- ✓ supported
- Vision
- ✓ accepts images
- Audio
- ✓ accepts audio
- Moderated
- no
What it costs in practice
Computed from the current $2.00/M input and $12.00/M output rates. Run your own numbers →
| Job | Tokens | Cost |
|---|---|---|
| Summarize a 50-page report | 30k in / 1.5k out | $0.08 |
| Classify 1,000 customer emails | 500k in / 50k out | $1.60 |
| A month of a busy support chatbot | 5M in / 2M out | $34.00 |
Strong choice for
Code
Code Refactoring
Safely restructuring an existing codebase across many files.
Code
Code Documentation
Writing clear docstrings and READMEs that match the code.
Writing
Long-Document Summarization
Summarizing books, transcripts, court filings.
Writing
Creative Writing
Fiction, poetry, screenplays.
Writing
Screenwriting & Dialog
Scripts, character voices, scene structure.
Writing
Transcript Cleanup
Turning raw ASR output into readable prose.
Category rankings
Where Google: Gemini 3.1 Pro Preview places across the 47 categories it ranks in. How we rank →
| # | Category | Score |
|---|---|---|
| #1 | Audio SummarizationVoice · of 25 ranked | 153 |
| #1 | Video SummarizationVideo · of 25 ranked | 153 |
| #3 | Legal ResearchProfessional · of 25 ranked | 157 |
| #3 | Scientific ResearchProfessional · of 25 ranked | 157 |
| #3 | History TutoringEducation · of 25 ranked | 138 |
| #3 | Long-Context Q&AAgents · of 25 ranked | 149 |
| #3 | Fiction CollaboratorPersonal · of 25 ranked | 157 |
| #3 | Literature ReviewResearch · of 25 ranked | 157 |
| #4 | Transcript CleanupWriting · of 25 ranked | 142 |
| #5 | Code RefactoringCode · of 25 ranked | 153 |
| #5 | Code DocumentationCode · of 25 ranked | 139 |
| #5 | Long-Document SummarizationWriting · of 25 ranked | 154 |
| #5 | Creative WritingWriting · of 25 ranked | 146 |
| #5 | Screenwriting & DialogWriting · of 25 ranked | 146 |
| #5 | Academic WritingWriting · of 25 ranked | 146 |
| #5 | Legal DraftingProfessional · of 25 ranked | 146 |
| #5 | Contract ReviewProfessional · of 25 ranked | 161 |
| #5 | OKRs & Strategic PlanningBusiness · of 25 ranked | 146 |
| #5 | RAG PipelinesAgents · of 25 ranked | 153 |
| #5 | Character RoleplayPersonal · of 25 ranked | 142 |
| #5 | Math ProofsResearch · of 25 ranked | 146 |
| #6 | RFP ResponseBusiness · of 25 ranked | 157 |
| #7 | Code ReviewCode · of 25 ranked | 150 |
| #7 | Bug FixingCode · of 25 ranked | 154 |
| #7 | ETL ScriptingData · of 25 ranked | 142 |
| #7 | Medical Note SummarizationProfessional · of 25 ranked | 142 |
| #7 | Essay GradingEducation · of 25 ranked | 150 |
| #7 | Scientific CodingResearch · of 25 ranked | 154 |
| #8 | Agent WorkflowsAgents · of 25 ranked | 158 |
| #8 | Coding AgentsAgents · of 25 ranked | 158 |
| #10 | CI/CD PipelinesCode · of 25 ranked | 131 |
| #10 | Physics TutoringEducation · of 25 ranked | 135 |
| #12 | Blog Post WritingWriting · of 25 ranked | 131 |
| #12 | Meeting NotesBusiness · of 25 ranked | 141 |
| #12 | Trip PlanningPersonal · of 25 ranked | 131 |
| #13 | OCR / Document ParsingData · of 25 ranked | 135 |
| #13 | Table Extraction from PDFsData · of 25 ranked | 135 |
| #15 | Unit Test GenerationCode · of 25 ranked | 135 |
| #16 | CSV / Spreadsheet CleanupData · of 25 ranked | 139 |
| #20 | SQL GenerationCode · of 25 ranked | 143 |
| #20 | Fitness CoachingPersonal · of 25 ranked | 119 |
| #21 | Math TutoringEducation · of 25 ranked | 127 |
| #21 | Screenshot DebuggingVision · of 25 ranked | 132 |
| #24 | Frontend Component DesignCode · of 25 ranked | 130 |
| #25 | Data AnalysisData · of 25 ranked | 135 |
| #25 | Financial AnalysisProfessional · of 25 ranked | 131 |
| #25 | Experiment DesignResearch · of 25 ranked | 131 |
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Quick answers
- How much does Google: Gemini 3.1 Pro Preview cost?
- $2.00 per million input tokens and $12.00 per million output tokens.
- What is Google: Gemini 3.1 Pro Preview's context window?
- 1,048,576 tokens, roughly 1,572 pages of text in a single request.
- Does Google: Gemini 3.1 Pro Preview support tool calling?
- It supports tool calling, structured output, a reasoning mode.
- Can Google: Gemini 3.1 Pro Preview process images?
- Yes, it accepts image input.