Google: Gemini 3.8 Flash
This AI model from Google supports multiple input modalities, including text, image, video, file, and audio. It also has a large context length of 1048576 tokens, allowing for more comprehensive processing. Considering its price point, this model may be worth shortlisting for those with high output requirements or who need to process diverse data types. The model's benchmark blended score of 69.0 indicates it performs reasonably well across at least one independent evaluation. However, the pricing is steep, with $3.75 per million output tokens, making it a less economical option unless output volume justifies the cost.
Benchmark results
Independent, published benchmarks. Blended score 69.0 across 1 benchmark, last refreshed 2026-09-27. 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 $0.75/M input and $3.75/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 | $0.56 |
| A month of a busy support chatbot | 5M in / 2M out | $11.25 |
Strong choice for
Category rankings
Where Google: Gemini 3.8 Flash places across the 7 categories it ranks in. How we rank →
| # | Category | Score |
|---|---|---|
| #5 | TranscriptionVoice · of 25 ranked | 123 |
| #6 | Image CaptioningVision · of 25 ranked | 121 |
| #7 | Audio SummarizationVoice · of 25 ranked | 148 |
| #7 | TTS ReplacementVoice · of 25 ranked | 115 |
| #8 | Video Auto-TaggingVideo · of 25 ranked | 123 |
| #12 | Video SummarizationVideo · of 25 ranked | 148 |
| #20 | Trivia & General KnowledgePersonal · of 25 ranked | 116 |
Similar models
Google: Gemini 3.8 Flash (batch)
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 cost?
- $0.75 per million input tokens and $3.75 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.