Google: Gemini 3.1 Pro Preview (batch)
Google's Gemini 3.1 Pro Preview (batch) accepts text, images, audio, video, and files as input. It offers a context window of 1,048,576 tokens and can return up to 65,536 tokens per response, which suits long documents or mixed-media inputs handled in a single request. It supports tool calling and reasoning. Structured output support is not specified in the available data. At $1.00 per million input tokens and $6.00 per million output tokens, it is a candidate for teams running large-context or multimodal workloads where cost matters. Its blended score of 74.7 across four benchmarks hides an uneven profile. It scores 100.0 on the AI Index coding measure but only 35.3 on the agentic measure, with 64.7 on EQ-Bench. Shortlist it for coding and long-context analysis, and test it carefully before relying on it for multi-step agent workflows.
Benchmark results
Independent, published benchmarks. Blended score 74.7 across 4 benchmarks, last refreshed 2026-11-08. How scoring works →
| Benchmark | Measures | Score |
|---|---|---|
| AI Index | broad capability composite | 76.7 |
| AI Index Coding | software engineering tasks | 100.0 |
| AI Index Agentic | multi-step tool-using tasks | 35.3 |
| EQ-Bench | emotional understanding in dialogue | 64.7 |
- Model ID
- google/gemini-3.1-pro-preview:batch
- 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 $1.00/M input and $6.00/M output rates. Run your own numbers →
| Job | Tokens | Cost |
|---|---|---|
| Summarize a 50-page report | 30k in / 1.5k out | $0.04 |
| Classify 1,000 customer emails | 500k in / 50k out | $0.80 |
| A month of a busy support chatbot | 5M in / 2M out | $17.00 |
Strong choice for
Category rankings
Where Google: Gemini 3.1 Pro Preview (batch) places across the 49 categories it ranks in. How we rank →
| # | Category | Score |
|---|---|---|
| #2 | Audio SummarizationVoice · of 25 ranked | 162 |
| #2 | Video SummarizationVideo · of 25 ranked | 162 |
| #9 | Transcript CleanupWriting · of 25 ranked | 145 |
| #10 | Code DocumentationCode · of 25 ranked | 145 |
| #11 | CSV / Spreadsheet CleanupData · of 25 ranked | 156 |
| #11 | OCR / Document ParsingData · of 25 ranked | 147 |
| #11 | Table Extraction from PDFsData · of 25 ranked | 147 |
| #13 | Long-Document SummarizationWriting · of 25 ranked | 164 |
| #13 | Blog Post WritingWriting · of 25 ranked | 141 |
| #13 | Character RoleplayPersonal · of 25 ranked | 152 |
| #13 | Trip PlanningPersonal · of 25 ranked | 141 |
| #14 | Meeting NotesBusiness · of 25 ranked | 153 |
| #15 | Code RefactoringCode · of 25 ranked | 168 |
| #15 | History TutoringEducation · of 25 ranked | 147 |
| #15 | RFP ResponseBusiness · of 25 ranked | 177 |
| #15 | RAG PipelinesAgents · of 25 ranked | 168 |
| #15 | Long-Context Q&AAgents · of 25 ranked | 158 |
| #16 | ETL ScriptingData · of 25 ranked | 156 |
| #16 | Legal ResearchProfessional · of 25 ranked | 171 |
| #16 | Medical Note SummarizationProfessional · of 25 ranked | 156 |
| #16 | Scientific ResearchProfessional · of 25 ranked | 171 |
| #16 | Fiction CollaboratorPersonal · of 25 ranked | 171 |
| #16 | Literature ReviewResearch · of 25 ranked | 171 |
| #17 | Code ReviewCode · of 25 ranked | 168 |
| #17 | Creative WritingWriting · of 25 ranked | 159 |
| #17 | Screenwriting & DialogWriting · of 25 ranked | 159 |
| #17 | Academic WritingWriting · of 25 ranked | 159 |
| #17 | Legal DraftingProfessional · of 25 ranked | 159 |
| #17 | Contract ReviewProfessional · of 25 ranked | 180 |
| #17 | Essay GradingEducation · of 25 ranked | 168 |
| #17 | OKRs & Strategic PlanningBusiness · of 25 ranked | 159 |
| #17 | Math ProofsResearch · of 25 ranked | 159 |
| #20 | CI/CD PipelinesCode · of 25 ranked | 145 |
| #20 | Sales / Cold EmailBusiness · of 25 ranked | 122 |
| #20 | Job Application DraftingBusiness · of 25 ranked | 122 |
| #20 | Journaling HelperPersonal · of 25 ranked | 122 |
| #20 | Recipe GenerationPersonal · of 25 ranked | 122 |
| #21 | Regex WritingCode · of 25 ranked | 135 |
| #21 | Language TranslationWriting · of 25 ranked | 135 |
| #21 | Physics TutoringEducation · of 25 ranked | 148 |
| #21 | Tutoring for KidsPersonal · of 25 ranked | 135 |
| #22 | Marketing CopyWriting · of 25 ranked | 129 |
| #22 | Standardized Test PrepEducation · of 25 ranked | 129 |
| #22 | Resume WritingBusiness · of 25 ranked | 117 |
| #23 | Screenshot DebuggingVision · of 25 ranked | 141 |
| #24 | Unit Test GenerationCode · of 25 ranked | 154 |
| #24 | SOP / Process DocsBusiness · of 25 ranked | 136 |
| #24 | Diagram ExtractionVision · of 25 ranked | 148 |
| #25 | Fitness CoachingPersonal · of 25 ranked | 133 |
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Quick answers
- How much does Google: Gemini 3.1 Pro Preview (batch) cost?
- $1.00 per million input tokens and $6.00 per million output tokens.
- What is Google: Gemini 3.1 Pro Preview (batch)'s context window?
- 1,048,576 tokens, roughly 1,572 pages of text in a single request.
- Does Google: Gemini 3.1 Pro Preview (batch) support tool calling?
- It supports tool calling, structured output, a reasoning mode.
- Can Google: Gemini 3.1 Pro Preview (batch) process images?
- Yes, it accepts image input.