Gemini 3.1 Flash-Lite
Gemini 3.1 Flash-Lite costs $0.25 per 1M input tokens and $1.50 per 1M output tokens. Its context window is 1,048,576 tokens. Google lists May 7, 2027 as the earliest possible retirement date for Gemini 3.1 Flash-Lite, and says it will send the exact date later. Google names Gemini 3.5 Flash-Lite as the replacement. Checked 2026-10-21.
"Gemini 3.1 Flash-Lite is a low-latency, cost-effective multimodal model optimized for high-frequency, lightweight tasks."
Facts
| API model ID | gemini-3.1-flash-lite | Source |
|---|---|---|
| Vendor | Source | |
| Input price | $0.25 per 1M tokens | Source |
| Output price | $1.50 per 1M tokens | Source |
| Cached input price | $0.025 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 | May 7, 2026 | Source |
| Knowledge cutoff | Not published | Source |
| Retirement | Earliest retirement May 7, 2027. Google says this is the earliest possible date and it sends the exact date later. | Source |
Google lists May 7, 2027 as the earliest possible shutdown date, with Gemini 3.5 Flash-Lite as the replacement.
What replaces it, and what it replaces
- Google names Gemini 3.5 Flash-Lite as its 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 3.1 Flash-Lite with the other models on our AI models page.
| Benchmark | Gemini 3.1 Flash-Lite |
|---|---|
| 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. | 144.26 Rank 17 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. | 81.8% Rank 16 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 3.1 Flash-Lite costs about $20 a month. Change the numbers to match yours.
Monthly cost estimate
Example sizes are our round numbers. Set your own below.
Gemini 3.1 Flash-Lite $20 a month
$2.00 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
- Gemini 3.5 Flash-Lite vs Gemini 3.1 Flash-Lite
- Compare Gemini 3.1 Flash-Lite 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 3.1 Flash-Lite cost?
$0.25 per 1M input tokens and $1.50 per 1M output tokens at list price. At 10,000 requests a month of 5,000 input and 500 output tokens, that is about $20 a month. Checked 2026-10-21.
What is the context window of Gemini 3.1 Flash-Lite?
1,048,576 tokens, with up to 65,536 output tokens per request.
When will Gemini 3.1 Flash-Lite be retired?
Google lists May 7, 2027 as the earliest possible retirement date for Gemini 3.1 Flash-Lite, and says it will send the exact date later. Google names Gemini 3.5 Flash-Lite as the replacement.
Can Gemini 3.1 Flash-Lite read images or PDFs?
Google lists these inputs: text, images, video, audio, pdf.
Building on Gemini 3.1 Flash-Lite?
We add models to products and test them on your real inputs. We bill hourly or by milestone.