Gemini 3.8 Flash
Gemini 3.8 Flash costs $0.75 per 1M input tokens and $3.75 per 1M output tokens. Its context window is 1,048,576 tokens. Google lists a new price for Gemini 3.8 Flash from Jan 1, 2027: $1.50 in and $7.50 out. Gemini 3.8 Flash has no announced retirement. Checked 2026-10-21.
"Our most intelligent Flash model, engineered for long-horizon software engineering, autonomous agents, and complex enterprise workflows."
Facts
| API model ID | gemini-3.8-flash | Source |
|---|---|---|
| Vendor | Source | |
| Input price | $0.75 per 1M tokens | Source |
| Output price | $3.75 per 1M tokens | Source |
| Cached input price | $0.075 per 1M tokens | Source |
| Price from Jan 1, 2027 | $1.50 in, $7.50 out per 1M tokens | Source |
| Context window | 1,048,576 tokens | Source |
| Max output | 65,536 tokens | Source |
| Inputs | Text, Images, Video, Audio, PDF | Source |
| Released | Sep 2, 2026 | Source |
| Knowledge cutoff | Not published | Source |
| Retirement | Active. No retirement date listed. | Source |
Google lists this price through December 31, 2026. It doubles on January 1, 2027.
What replaces it, and what it replaces
- Google has not named a replacement.
- For older models that already have shutdown dates, see our AI model retirement dates calendar.
Benchmark scores
Independent scores from Epoch AI, which scores every vendor's models the same way. The rank compares Gemini 3.8 Flash with the other models on our AI models page.
| Benchmark | Gemini 3.8 Flash |
|---|---|
| Epoch Capabilities Index One score that combines many benchmarks, such as math, science, and coding tests, into a single scale. Epoch sets Claude 3.5 Sonnet at 130 and GPT-5 at 150. | 157.44 Rank 10 of 17 models here |
| GPQA Diamond 198 hard multiple-choice questions in biology, chemistry, and physics, written by PhD-level experts. Guessing scores 25%. We show the highest score for each model across the reasoning settings Epoch ran. | 95.4% Rank 4 of 16 models here |
Scores are Epoch AI's, not ours. Source: Epoch AI, Capabilities and benchmarking, from its public data download, checked 2026-10-21. Used under CC BY 4.0. We drew the charts. A benchmark is one test, so run your own inputs before you choose.
What it costs for your workload
At 10,000 requests a month of 5,000 input and 500 output tokens, Gemini 3.8 Flash costs about $56 a month. Change the numbers to match yours.
Monthly cost estimate
Example sizes are our round numbers. Set your own below.
Gemini 3.8 Flash $56 a month
$5.63 per 1,000 requests
List prices checked 2026-10-21, standard tier, no caching, no batch discount. Claude 4.7 and later count about 30% more tokens for the same text, so their rows include that. Long-prompt prices apply where the vendor sets them.
Compare it
- Claude Sonnet 5.5 vs Gemini 3.8 Flash
- Compare Gemini 3.8 Flash with any other model
- Not sure which model fits the job? The AI model picker gives you three to test.
Questions clients ask
Short answers, no sales language. If yours isn't here, ask an engineer directly.
Ask us anythingHow much does Gemini 3.8 Flash cost?
$0.75 per 1M input tokens and $3.75 per 1M output tokens at list price. At 10,000 requests a month of 5,000 input and 500 output tokens, that is about $56 a month. Google lists $1.50 in and $7.50 out from Jan 1, 2027. Checked 2026-10-21.
What is the context window of Gemini 3.8 Flash?
1,048,576 tokens, with up to 65,536 output tokens per request.
When will Gemini 3.8 Flash be retired?
No retirement is announced on Google's deprecation page as of 2026-10-21.
Can Gemini 3.8 Flash read images or PDFs?
Google lists these inputs: text, images, video, audio, pdf.
Building on Gemini 3.8 Flash?
We add models to products and test them on your real inputs. We bill hourly or by milestone.