Google: Gemini 3.8 Flash
Gemini 3.8 Flash is a Google model that accepts text, image, video, audio, and file inputs, which makes it suitable for mixed-media workloads without a separate preprocessing step. It offers a context window of about 1.05 million tokens and can return up to 65,536 tokens in a single completion. It supports tool calling and reasoning. The available facts do not confirm structured output support or open weights, so readers who need either should check before committing. Pricing is $0.825 per million input tokens and $4.125 per million output tokens. That makes it a reasonable shortlist candidate for teams processing long documents or multimodal inputs where input volume dominates cost. Its blended benchmark score is 67.8, but that figure comes from only one independent benchmark. The model's standing is therefore thinly evidenced, and buyers should run their own task-specific evaluations before treating it as a proven choice.
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
- 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 $0.82/M input and $4.12/M output rates. Run your own numbers →
| Job | Tokens | Cost |
|---|---|---|
| Summarize a 50-page report | 30k in / 1.5k out | $0.03 |
| Classify 1,000 customer emails | 500k in / 50k out | $0.62 |
| A month of a busy support chatbot | 5M in / 2M out | $12.38 |
Price & spec history
Tracked daily by PicksByModel since 2026-09-03.
| Date | Input /M | Output /M | Context |
|---|---|---|---|
| 2026-10-16 | $0.82 | $4.12 | 1,048,576 |
| 2026-09-03 | $0.75 | $3.75 | 1,048,576 |
Strong choice for
Category rankings
Where Google: Gemini 3.8 Flash places across the 12 categories it ranks in. How we rank →
| # | Category | Score |
|---|---|---|
| #4 | TranscriptionVoice · of 25 ranked | 123 |
| #9 | Image CaptioningVision · of 25 ranked | 121 |
| #9 | Audio SummarizationVoice · of 25 ranked | 148 |
| #9 | TTS ReplacementVoice · of 25 ranked | 115 |
| #10 | Video Auto-TaggingVideo · of 25 ranked | 123 |
| #16 | Video SummarizationVideo · of 25 ranked | 148 |
| #17 | Trivia & General KnowledgePersonal · of 25 ranked | 116 |
| #23 | Short-Form SummarizationWriting · of 25 ranked | 126 |
| #23 | Email DraftingWriting · of 25 ranked | 122 |
| #23 | Language LearningEducation · of 25 ranked | 122 |
| #23 | Chat CompanionPersonal · of 25 ranked | 126 |
| #24 | Meeting NotesBusiness · of 25 ranked | 140 |
Similar models
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Google: Gemini 3.7 Flash (batch)
Google: Gemini 3.6 Flash
Quick answers
- How much does Google: Gemini 3.8 Flash cost?
- $0.82 per million input tokens and $4.12 per million output tokens.
- What is Google: Gemini 3.8 Flash's context window?
- 1,048,576 tokens, roughly 1,572 pages of text in a single request.
- Does Google: Gemini 3.8 Flash support tool calling?
- It supports tool calling, structured output, a reasoning mode.
- Can Google: Gemini 3.8 Flash process images?
- Yes, it accepts image input.