Google: Gemini 3.5 Flash
Google's Gemini 3.5 Flash is a versatile AI model capable of processing text, images, videos, files, and audio inputs; it can handle context lengths up to 1048576 tokens and supports reasoning and the use of tools. This model excels in tasks requiring agentic behavior, with a benchmark score of 100.0 in coding; however, its performance on other agentic benchmarks is lower at 65.5. Gemini 3.5 Flash offers a blended benchmark score of 84.3 across three independent tests but lacks structured output capabilities and open-source weights. Considering its price point-$1.5 per million input tokens and $9.0 per million output tokens-it may be more suitable for organizations willing to invest in higher-quality coding tasks or multimedia processing, despite the premium cost.
Benchmark results
Independent, published benchmarks. Blended score 84.3 across 3 benchmarks, last refreshed 2026-08-13. How scoring works →
| Benchmark | Measures | Score |
|---|---|---|
| AI Index | broad capability composite | 85.7 |
| AI Index Coding | software engineering tasks | 100.0 |
| AI Index Agentic | multi-step tool-using tasks | 65.5 |
- Model ID
- google/gemini-3.5-flash
- Vendor
- Released
- May 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 $1.50/M input and $9.00/M output rates. Run your own numbers →
| Job | Tokens | Cost |
|---|---|---|
| Summarize a 50-page report | 30k in / 1.5k out | $0.06 |
| Classify 1,000 customer emails | 500k in / 50k out | $1.20 |
| A month of a busy support chatbot | 5M in / 2M out | $25.50 |
Category rankings
Where Google: Gemini 3.5 Flash places across the 4 categories it ranks in. How we rank →
| # | Category | Score |
|---|---|---|
| #7 | Audio SummarizationVoice · of 25 ranked | 158 |
| #9 | Video SummarizationVideo · of 25 ranked | 158 |
| #10 | TTS ReplacementVoice · of 25 ranked | 115 |
| #23 | TranscriptionVoice · of 25 ranked | 115 |
Similar models
Google: Gemini 3.6 Flash
Google: Gemini 3.6 Flash (batch)
Google: Gemini 3.5 Flash Lite
Google: Gemini 3.5 Flash Lite (batch)
Google: Gemini 3.5 Flash (batch)
Google: Gemini 3.1 Flash Lite
Quick answers
- How much does Google: Gemini 3.5 Flash cost?
- $1.50 per million input tokens and $9.00 per million output tokens.
- What is Google: Gemini 3.5 Flash's context window?
- 1,048,576 tokens, roughly 1,572 pages of text in a single request.
- Does Google: Gemini 3.5 Flash support tool calling?
- It supports tool calling, structured output, a reasoning mode.
- Can Google: Gemini 3.5 Flash process images?
- Yes, it accepts image input.