Google: Gemini 3.8 Flash (batch)
Google: Gemini 3.8 Flash (batch) is a Google model that accepts text, image, video, audio, and file inputs, so a single endpoint can handle mixed-media workloads. It offers a context window of 1,048,576 tokens and can return up to 65,536 tokens per completion, which suits long documents, large codebases, or lengthy transcripts. It supports tool calling and reasoning; the listing does not state whether structured output is supported, so verify that before relying on schema-constrained responses. At $0.375 per million input tokens and $1.875 per million output tokens, it belongs on the shortlist for teams processing high volumes of multimodal or long-context input where cost per token matters. Its blended benchmark score of 67.8 rests on a single independent benchmark, so its standing against peers is only partly established. Test it on your own tasks before committing it to production.
Benchmark results
Independent, published benchmarks. Blended score 67.8 across 1 benchmark, last refreshed 2026-10-19. How scoring works →
| Benchmark | Measures | Score |
|---|---|---|
| AI Index | broad capability composite | 67.5 |
- Model ID
- google/gemini-3.8-flash:batch
- Vendor
- Released
- September 2026
- Tokenizer
- Gemini
- Input Modalities
- text, image, video, file, audio
- 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 $0.38/M input and $1.88/M output rates. Run your own numbers →
| Job | Tokens | Cost |
|---|---|---|
| Summarize a 50-page report | 30k in / 1.5k out | $0.01 |
| Classify 1,000 customer emails | 500k in / 50k out | $0.28 |
| A month of a busy support chatbot | 5M in / 2M out | $5.62 |
Strong choice for
Category rankings
Where Google: Gemini 3.8 Flash (batch) places across the 22 categories it ranks in. How we rank →
| # | Category | Score |
|---|---|---|
| #5 | TranscriptionVoice · of 25 ranked | 123 |
| #9 | Trivia & General KnowledgePersonal · of 25 ranked | 117 |
| #10 | Image CaptioningVision · of 25 ranked | 121 |
| #10 | Audio SummarizationVoice · of 25 ranked | 148 |
| #10 | TTS ReplacementVoice · of 25 ranked | 115 |
| #11 | Video Auto-TaggingVideo · of 25 ranked | 123 |
| #14 | Short-Form SummarizationWriting · of 25 ranked | 126 |
| #14 | Email DraftingWriting · of 25 ranked | 122 |
| #14 | Language LearningEducation · of 25 ranked | 122 |
| #14 | Chat CompanionPersonal · of 25 ranked | 126 |
| #17 | Video SummarizationVideo · of 25 ranked | 148 |
| #19 | Resume WritingBusiness · of 25 ranked | 113 |
| #20 | Code CompletionCode · of 25 ranked | 132 |
| #22 | Sales / Cold EmailBusiness · of 25 ranked | 118 |
| #22 | Job Application DraftingBusiness · of 25 ranked | 118 |
| #22 | Journaling HelperPersonal · of 25 ranked | 118 |
| #22 | Recipe GenerationPersonal · of 25 ranked | 118 |
| #24 | Regex WritingCode · of 25 ranked | 126 |
| #24 | Language TranslationWriting · of 25 ranked | 126 |
| #24 | Tutoring for KidsPersonal · of 25 ranked | 126 |
| #25 | Code DocumentationCode · of 25 ranked | 137 |
| #25 | Meeting NotesBusiness · of 25 ranked | 140 |
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Quick answers
- How much does Google: Gemini 3.8 Flash (batch) cost?
- $0.38 per million input tokens and $1.88 per million output tokens.
- What is Google: Gemini 3.8 Flash (batch)'s context window?
- 1,048,576 tokens, roughly 1,572 pages of text in a single request.
- Does Google: Gemini 3.8 Flash (batch) support tool calling?
- It supports tool calling, structured output, a reasoning mode.
- Can Google: Gemini 3.8 Flash (batch) process images?
- Yes, it accepts image input.