Gemini 2.5 Flash-Lite Preview 06-17 vs Gemini 2.5 Flash-Lite Preview 09-2025
Too close to call on our weighted score (Gemini 2.5 Flash-Lite Preview 09-2025 81, Gemini 2.5 Flash-Lite Preview 06-17 78). The right pick depends on what you value most.
GoogleGemini 2.5 Flash-Lite Preview 06-17
78/100- ECI133.8
- Price$0.12 / $0.48
- Context1.05M
- Google
Gemini 2.5 Flash-Lite Preview 09-2025
81/100- ECI—
- Price$0.095 / $0.38
- Context1.05M
Add a model
Make it a three-way comparison.
Too close to call
It is close. Our weighted score puts them within 2 points (Gemini 2.5 Flash-Lite Preview 09-2025 81/100, Gemini 2.5 Flash-Lite Preview 06-17 78/100), so choose by what matters most for your work: Gemini 2.5 Flash-Lite Preview 09-2025 on price. The score weighs price 50%, inputs & features 30%, context window 20%. None of the shared benchmarks cover every model here yet, so capability is left out of this verdict.
- CapabilityNot enough dataNo independent benchmark covers every model here yet
- Lowest priceGemini 2.5 Flash-Lite Preview 09-2025Gemini 2.5 Flash-Lite Preview 09-2025 $0.166 · Gemini 2.5 Flash-Lite Preview 06-17 $0.21 per 1M tokens (3:1 blend)
- Longest contextAbout the sameGemini 2.5 Flash-Lite Preview 06-17 1,048,576 · Gemini 2.5 Flash-Lite Preview 09-2025 1,048,576 tokens
- Widest inputsSame inputsGemini 2.5 Flash-Lite Preview 06-17: Text, Images, PDFs, Audio, Video · Gemini 2.5 Flash-Lite Preview 09-2025: Text, Images, PDFs, Audio, Video
- Self-hostingNo open weightsBoth are available only through APIs
| Measure | Weight | Gemini 2.5 Flash-Lite Preview 06-17 | Gemini 2.5 Flash-Lite Preview 09-2025 |
|---|---|---|---|
| Price | 50% | 79 | 83 |
| Inputs & features | 30% | 90 | 90 |
| Context window | 20% | 61 | 61 |
| Overall | 100% | 78/100 | 81/100 |
Left out because at least one model lacks the data: capability. The remaining weights were rescaled.
Every spec in one table
Highlighted cells lead their row. Dashes mean the data is not published.
| Specification | Gemini 2.5 Flash-Lite Preview 06-17Google | Gemini 2.5 Flash-Lite Preview 09-2025Google |
|---|---|---|
| Capability | ||
| Capabilities Index (ECI) | 133.8 | — |
| ECI rank | #132 of 165 | — |
| Price per million tokens | ||
| Input | $0.12 | $0.095 (best) |
| Output | $0.48 | $0.38 (best) |
| Cached input | — | — |
| Blended (3:1) | $0.21 | $0.166 (best) |
| Long-context rate | Same rate | Same rate |
| Price source | Median of 2 providers | Median of 2 providers |
| Limits | ||
| Context window | 1,048,576 tokens | 1,048,576 tokens |
| Max output | 65,536 tokens | 65,536 tokens |
| Inputs and features | ||
| Text | Yes | Yes |
| Images | Yes | Yes |
| PDFs | Yes | Yes |
| Audio | Yes | Yes |
| Video | Yes | Yes |
| Reasoning | Yes | Yes |
| Tool calling | Yes | Yes |
| Structured output | No | No |
| Availability | ||
| Weights | Proprietary | Proprietary |
| API model ID | — | — |
| API providers | 2 | 2 |
| Released | Jun 17, 2025 | Sep 25, 2025 |
| Knowledge cutoff | Jan 2025 | Jan 2025 |
What would a month cost?
Enter your expected volume in millions of tokens. List prices only; caching and batch discounts would lower these.
- Gemini 2.5 Flash-Lite Preview 06-17$2.16
- Gemini 2.5 Flash-Lite Preview 09-2025$1.71
Which should you choose?
Which is better: Gemini 2.5 Flash-Lite Preview 06-17 or Gemini 2.5 Flash-Lite Preview 09-2025?
It is close. Our weighted score puts them within 2 points (Gemini 2.5 Flash-Lite Preview 09-2025 81/100, Gemini 2.5 Flash-Lite Preview 06-17 78/100), so choose by what matters most for your work: Gemini 2.5 Flash-Lite Preview 09-2025 on price. The score weighs price 50%, inputs & features 30%, context window 20%. None of the shared benchmarks cover every model here yet, so capability is left out of this verdict.
Which is cheaper, Gemini 2.5 Flash-Lite Preview 06-17 or Gemini 2.5 Flash-Lite Preview 09-2025?
Gemini 2.5 Flash-Lite Preview 09-2025 is cheaper at $0.095 input / $0.38 output per million tokens (median across 2 API providers). Gemini 2.5 Flash-Lite Preview 06-17 costs $0.12 input / $0.48 output per million tokens (median across 2 API providers). At a typical mix of three input tokens to one output token, that is $0.166 per million tokens for Gemini 2.5 Flash-Lite Preview 09-2025 versus $0.21 for Gemini 2.5 Flash-Lite Preview 06-17 (1.3× as much).
Which scores higher on benchmarks?
There is no independent benchmark that covers both models yet. Gemini 2.5 Flash-Lite Preview 06-17 has an ECI of 133.8 and Gemini 2.5 Flash-Lite Preview 09-2025 has not been scored yet.
Which is better for coding?
There are no published SWE-bench Verified results for Gemini 2.5 Flash-Lite Preview 06-17 and Gemini 2.5 Flash-Lite Preview 09-2025 yet, so there is no like-for-like coding score. Test both on a sample of your own tasks. Both support tool calling for agent workflows.
Which has the bigger context window?
Gemini 2.5 Flash-Lite Preview 06-17 and Gemini 2.5 Flash-Lite Preview 09-2025 share the same 1,048,576-token context window. Maximum output per response: Gemini 2.5 Flash-Lite Preview 06-17 up to 65,536, Gemini 2.5 Flash-Lite Preview 09-2025 up to 65,536 tokens.
Which can read images, PDFs, audio or video?
Gemini 2.5 Flash-Lite Preview 06-17 accepts text, images, PDFs, audio and video; Gemini 2.5 Flash-Lite Preview 09-2025 accepts text, images, PDFs, audio and video. They handle the same number of input types.
Are any of these open source?
No. Gemini 2.5 Flash-Lite Preview 06-17 and Gemini 2.5 Flash-Lite Preview 09-2025 are proprietary and only available through APIs and apps.
Which is newer?
Gemini 2.5 Flash-Lite Preview 09-2025 is the newest, released Sep 25, 2025. Gemini 2.5 Flash-Lite Preview 06-17 came out Jun 17, 2025. Knowledge cutoff: Gemini 2.5 Flash-Lite Preview 06-17 Jan 2025, Gemini 2.5 Flash-Lite Preview 09-2025 Jan 2025.
How do you decide the winner?
Each model gets a 0–100 score on capability (50%, independent benchmark results); price (25%, blended price per million tokens (3 input : 1 output), log scale); inputs & features (15%, image, PDF, audio and video input, tool calling, structured output and reasoning); context window (10%, maximum tokens per request, log scale). Dimensions missing for any model are dropped and the remaining weights rescaled, so every model is judged on the same evidence. Specs and prices come from public model listings and the labs’ own API pages; capability scores come from independent benchmark runs. Data updated Nov 2, 2026.
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