Gemini 2.5 Flash-Lite
$52.38 / month- Input cost
- $27.38
- Output cost
- $25.00
- Per 1,000 calls
- $0.2095
- Pricing profile
- standard / text
Source-tracked model comparison
Gemini 3.1 Flash-Lite vs Gemini 2.5 Flash-Lite: what changes in support-triage cost?
Compare verified pricing and model limits for upgrading a Gemini Flash-Lite support-routing workload. The cost example uses a support ticket triage workload and does not assume equal model quality.
Direct cost answer: Gemini 2.5 Flash-Lite is estimated at $52.38 per month and Gemini 3.1 Flash-Lite at $162.19 for 1,500 input tokens, 250 output tokens, and 250,000 monthly requests. Gemini 2.5 Flash-Lite is $109.81 lower under these assumptions. This does not identify a quality winner.
Tracked facts
Pricing and model limits
Prices are USD per 1M tokens under each model's verified default profile.
| Field | Gemini 2.5 Flash-Lite | Gemini 3.1 Flash-Lite |
|---|---|---|
| Provider | ||
| API model ID | gemini-2.5-flash-lite | gemini-3.1-flash-lite |
| Input / 1M | $0.10 | $0.25 |
| Cached input / 1M | $0.01 | $0.025 |
| Output / 1M | $0.40 | $1.50 |
| Context window | 1,048,576 tokens | 1,048,576 tokens |
| Maximum output | 65,536 tokens | 65,536 tokens |
| Accepted input | text, image, video, audio, pdf | text, image, audio |
Example workload
Support ticket triage cost scenario
1,500 input and 250 output tokens per request, 250,000 monthly requests, and 30% cached input.
Gemini 3.1 Flash-Lite
$162.19 / month- Input cost
- $68.44
- Output cost
- $93.75
- Per 1,000 calls
- $0.6488
- Pricing profile
- standard
Cost result: Gemini 2.5 Flash-Lite is $109.81 lower per month for these assumptions. This is a price comparison, not a model-quality ranking.
Questions to answer before choosing
- Does the newer model improve difficult routing cases?
- Can the existing prompt and integration remain unchanged?
- How does escalation rate affect the measured cost difference?
What this estimate leaves out
This estimate covers generation tokens only and does not assume equal routing accuracy between models.
Latency, reliability, output quality, retries, regional processing, and provider-specific tool charges can change the practical decision.
Related active comparisons
Continue with a nearby model decision
These comparisons share a model or provider decision with this page.
cost
GPT-4o mini vs Gemini 2.5 Flash-Lite
Which has lower API cost for high-volume routing: GPT-4o Mini or Gemini 2.5 Flash-Lite?
Compare API cost costClaude Haiku 4.5 vs Gemini 2.5 Flash-Lite
Which has lower API cost for support routing: Claude Haiku 4.5 or Gemini 2.5 Flash-Lite?
Compare API cost same familyGemini 2.5 Flash vs Gemini 2.5 Flash-Lite
When does Gemini 2.5 Flash-Lite cost less than Gemini 2.5 Flash?
Compare API cost costDeepSeek V4 Flash non-thinking vs Gemini 2.5 Flash-Lite
Which has lower API cost for support triage: DeepSeek V4 Flash or Gemini 2.5 Flash-Lite?
Compare API cost