Google: Gemini 3.8 Flash (batch)
Google's Gemini 3.8 Flash (batch) accepts text, image, video, audio, and file inputs, which makes it a fit for mixed-media workloads without a separate preprocessing model. It offers a context window of 1,048,576 tokens and can return up to 65,536 tokens per completion, so long documents, transcripts, or extended video can fit in a single request. It supports tool calling and reasoning; structured output support is not specified in the available data. At $0.375 per million input tokens and $1.875 per million output tokens, this model belongs on the shortlist for teams processing large volumes of multimodal or long-context material where cost per token matters. Its blended benchmark score of 69.0 comes from a single independent benchmark (AI Index score of 67.5), so its standing is thinly evidenced. Readers should run their own task-specific tests before committing, especially against similarly priced alternatives with broader benchmark coverage.
Benchmark results
Independent, published benchmarks. Blended score 69.0 across 1 benchmark, last refreshed 2026-10-13. 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 12 categories it ranks in. How we rank →
| # | Category | Score |
|---|---|---|
| #5 | TranscriptionVoice · of 25 ranked | 123 |
| #7 | TTS ReplacementVoice · of 25 ranked | 115 |
| #8 | Audio SummarizationVoice · of 25 ranked | 148 |
| #8 | Video Auto-TaggingVideo · of 25 ranked | 123 |
| #10 | Image CaptioningVision · of 25 ranked | 121 |
| #14 | Trivia & General KnowledgePersonal · of 25 ranked | 117 |
| #15 | Short-Form SummarizationWriting · of 25 ranked | 126 |
| #15 | Email DraftingWriting · of 25 ranked | 122 |
| #15 | Language LearningEducation · of 25 ranked | 122 |
| #15 | Video SummarizationVideo · of 25 ranked | 148 |
| #15 | Chat CompanionPersonal · of 25 ranked | 126 |
| #22 | Code CompletionCode · of 25 ranked | 132 |
Similar models
Google: Gemini 3.8 Flash
Google: Gemini 3.7 Flash
Google: Gemini 3.7 Flash (batch)
Google: Gemini 3.6 Flash
Google: Gemini 3.6 Flash (batch)
Google: Gemini 3.5 Flash Lite
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.