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Google: Gemini 3.8 Flash

The Gemini 3.8 Flash is a large language model developed by Google that can handle various input modalities including text, image, video, file, and audio. It has a context length of 1 MB and supports tools and reasoning capabilities. Considering the pricing summary, users who need to process long inputs may find this model attractive due to its high context length. However, it is essential to note that its price point is on the higher end, with $0.75 per million input tokens and $3.75 per million output tokens. Despite its strong benchmark performance, a blended score of 93.4 across three independent benchmarks may not be enough to justify the cost for all users; those prioritizing affordability should look elsewhere.

Quality Score
100/100
price + capability + benchmarks
Input Price
$0.75
per 1M tokens · checked 2026-09-04
Output Price
$3.75
per 1M tokens · checked 2026-09-04
Context Window
1,048,576
tokens

Benchmark results

Independent, published benchmarks. Blended score 93.4 across 3 benchmarks, last refreshed 2026-09-04. How scoring works →

BenchmarkMeasuresScore
AI Index broad capability composite 96.8
AI Index Coding software engineering tasks 100.0
AI Index Agentic multi-step tool-using tasks 82.5
Model ID
google/gemini-3.8-flash
Vendor
google
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 →

JobTokensCost
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 56 categories it ranks in. How we rank →

#CategoryScore
#1 Image CaptioningVision · of 25 ranked 121
#2 TranscriptionVoice · of 25 ranked 123
#2 Video Auto-TaggingVideo · of 25 ranked 123
#3 TTS ReplacementVoice · of 25 ranked 115
#4 Audio SummarizationVoice · of 25 ranked 161
#4 Trivia & General KnowledgePersonal · of 25 ranked 122
#6 Short-Form SummarizationWriting · of 25 ranked 132
#6 Email DraftingWriting · of 25 ranked 128
#6 Language LearningEducation · of 25 ranked 128
#6 Chat CompanionPersonal · of 25 ranked 132
#8 Customer SupportBusiness · of 25 ranked 135
#9 Video SummarizationVideo · of 25 ranked 161
#10 JSON ExtractionData · of 25 ranked 148
#12 Sales / Cold EmailBusiness · of 25 ranked 124
#12 Resume WritingBusiness · of 25 ranked 118
#12 Job Application DraftingBusiness · of 25 ranked 124
#12 Journaling HelperPersonal · of 25 ranked 124
#12 Recipe GenerationPersonal · of 25 ranked 124
#14 Dataset AnnotationResearch · of 25 ranked 144
#15 Regex WritingCode · of 25 ranked 137
#15 Language TranslationWriting · of 25 ranked 137
#15 Tutoring for KidsPersonal · of 25 ranked 137
#16 Meeting NotesBusiness · of 25 ranked 153
#16 SOP / Process DocsBusiness · of 25 ranked 138
#17 Bulk Data LabelingData · of 25 ranked 134
#18 Code DocumentationCode · of 25 ranked 144
#18 Browser AutomationAgents · of 25 ranked 174
#19 Frontend Component DesignCode · of 25 ranked 148
#19 Marketing CopyWriting · of 25 ranked 132
#19 Standardized Test PrepEducation · of 25 ranked 132
#19 Diagram ExtractionVision · of 25 ranked 150
#19 Screenshot DebuggingVision · of 25 ranked 144
#19 Chart & Graph ReadingVision · of 25 ranked 154
#20 Function / Tool CallingAgents · of 25 ranked 155
#20 Fitness CoachingPersonal · of 25 ranked 136
#21 SQL GenerationCode · of 25 ranked 173
#21 CSV / Spreadsheet CleanupData · of 25 ranked 154
#21 OCR / Document ParsingData · of 25 ranked 147
#21 Table Extraction from PDFsData · of 25 ranked 147
#21 Blog Post WritingWriting · of 25 ranked 142
#21 Trip PlanningPersonal · of 25 ranked 142
#22 Code CompletionCode · of 25 ranked 133
#22 Data AnalysisData · of 25 ranked 173
#22 Financial AnalysisProfessional · of 25 ranked 161
#22 Math TutoringEducation · of 25 ranked 149
#22 Experiment DesignResearch · of 25 ranked 159
#23 CI/CD PipelinesCode · of 25 ranked 146
#23 Physics TutoringEducation · of 25 ranked 149
#24 Long-Document SummarizationWriting · of 25 ranked 162
#24 Character RoleplayPersonal · of 25 ranked 152
#25 Bug FixingCode · of 25 ranked 183
#25 Unit Test GenerationCode · of 25 ranked 156
#25 ETL ScriptingData · of 25 ranked 156
#25 Medical Note SummarizationProfessional · of 25 ranked 156
#25 History TutoringEducation · of 25 ranked 146
#25 Scientific CodingResearch · of 25 ranked 183

Similar models

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.