Gemini 2.5 Flash-Lite vs Gemini 2.5 Pro Preview 06-05 vs Solar Pro 2
Gemini 2.5 Flash-Lite comes out ahead, 83 to 51 and 48 on our weighted score, and it is the cheaper option too.
- Our pick
GoogleGemini 2.5 Flash-Lite
83/100- ECI—
- Price$0.10 / $0.40
- Context1.05M
- Google
Gemini 2.5 Pro Preview 06-05
48/100- ECI—
- Price$1.22 / $9.75
- Context1.05M
UpstageSolar Pro 2
51/100- ECI—
- Price$0.25 / $0.25
- Context66K
Gemini 2.5 Flash-Lite is our pick
Gemini 2.5 Flash-Lite is the better all-round choice, scoring 83/100 against Solar Pro 2 (51) and Gemini 2.5 Pro Preview 06-05 (48). It leads on price and inputs & features. 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-LiteGemini 2.5 Flash-Lite $0.175 · Solar Pro 2 $0.25 · Gemini 2.5 Pro Preview 06-05 $3.35 per 1M tokens (3:1 blend)
- Longest contextGemini 2.5 Flash-Lite and Gemini 2.5 Pro Preview 06-05Gemini 2.5 Flash-Lite 1,048,576 · Gemini 2.5 Pro Preview 06-05 1,048,576 · Solar Pro 2 65,536 tokens
- Widest inputsGemini 2.5 Flash-LiteGemini 2.5 Flash-Lite: Text, Images, PDFs, Audio, Video · Gemini 2.5 Pro Preview 06-05: Text, Images, PDFs, Audio · Solar Pro 2: Text
- Self-hostingNo open weightsAll three are available only through APIs
| Measure | Weight | Gemini 2.5 Flash-Lite | Gemini 2.5 Pro Preview 06-05 | Solar Pro 2 |
|---|---|---|---|---|
| Price | 50% | 82 | 24 | 75 |
| Inputs & features | 30% | 100 | 80 | 35 |
| Context window | 20% | 61 | 61 | 12 |
| Overall | 100% | 83/100 | 48/100 | 51/100 |
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-LiteGoogle | Gemini 2.5 Pro Preview 06-05Google | Solar Pro 2Upstage |
|---|---|---|---|
| Capability | |||
| Capabilities Index (ECI) | — | — | — |
| ECI rank | — | — | — |
| Price per million tokens | |||
| Input | $0.10 (best) | $1.22 | $0.25 |
| Output | $0.40 | $9.75 | $0.25 (best) |
| Cached input | $0.01 | — | — |
| Blended (3:1) | $0.175 (best) | $3.35 | $0.25 |
| Long-context rate | Same rate | Same rate | Same rate |
| Price source | Official Google API | Median of 4 providers | Official Upstage API |
| Limits | |||
| Context window | 1,048,576 tokens (best) | 1,048,576 tokens (best) | 65,536 tokens |
| Max output | 65,536 tokens (best) | 65,536 tokens (best) | 8,192 tokens |
| Inputs and features | |||
| Text | Yes | Yes | Yes |
| Images | Yes | Yes | No |
| PDFs | Yes | Yes | No |
| Audio | Yes | Yes | No |
| Video | Yes | No | No |
| Reasoning | Yes | Yes | Yesminimal · high |
| Tool calling | Yes | Yes | Yes |
| Structured output | Yes | No | No |
| Availability | |||
| Weights | Proprietary | Proprietary | Proprietary |
| API model ID | gemini-2.5-flash-lite | — | solar-pro2 |
| API providers | 24 (best) | 4 | 2 |
| Released | Jun 17, 2025 | Jun 5, 2025 | May 20, 2025 |
| Knowledge cutoff | Jan 2025 | Jan 31, 2025 | Mar 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$1.80
- Gemini 2.5 Pro Preview 06-05$31.69
- Solar Pro 2$3.00
Which should you choose?
Which is better: Gemini 2.5 Flash-Lite, Gemini 2.5 Pro Preview 06-05 or Solar Pro 2?
Gemini 2.5 Flash-Lite is the better all-round choice, scoring 83/100 against Solar Pro 2 (51) and Gemini 2.5 Pro Preview 06-05 (48). It leads on price and inputs & features. 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, Gemini 2.5 Pro Preview 06-05 or Solar Pro 2?
Gemini 2.5 Flash-Lite is cheaper at $0.10 input / $0.40 output per million tokens (official Google API price). Solar Pro 2 costs $0.25 input / $0.25 output per million tokens (official Upstage API price); Gemini 2.5 Pro Preview 06-05 costs $1.22 input / $9.75 output per million tokens (median across 4 API providers). At a typical mix of three input tokens to one output token, that is $0.175 per million tokens for Gemini 2.5 Flash-Lite versus $0.25 for Solar Pro 2 (1.4× as much) and $3.35 for Gemini 2.5 Pro Preview 06-05 (19× as much).
Which scores higher on benchmarks?
There is no independent benchmark that covers all three models yet. Gemini 2.5 Flash-Lite has not been scored yet, Gemini 2.5 Pro Preview 06-05 has not been scored yet and Solar Pro 2 has not been scored yet.
Which is better for coding?
There are no published SWE-bench Verified results for Gemini 2.5 Flash-Lite, Gemini 2.5 Pro Preview 06-05 and Solar Pro 2 yet, so there is no like-for-like coding score. Test both on a sample of your own tasks. All three support tool calling for agent workflows.
Which has the bigger context window?
Gemini 2.5 Flash-Lite and Gemini 2.5 Pro Preview 06-05 have the largest context windows (1,048,576 and 1,048,576 tokens), against 65,536 for Solar Pro 2. Maximum output per response: Gemini 2.5 Flash-Lite up to 65,536, Gemini 2.5 Pro Preview 06-05 up to 65,536, Solar Pro 2 up to 8,192 tokens.
Which can read images, PDFs, audio or video?
Gemini 2.5 Flash-Lite accepts text, images, PDFs, audio and video; Gemini 2.5 Pro Preview 06-05 accepts text, images, PDFs and audio; Solar Pro 2 accepts text. Gemini 2.5 Flash-Lite handles the widest range of inputs.
Are any of these open source?
No. Gemini 2.5 Flash-Lite, Gemini 2.5 Pro Preview 06-05 and Solar Pro 2 are proprietary and only available through APIs and apps.
Which is newer?
Gemini 2.5 Flash-Lite is the newest, released Jun 17, 2025. Gemini 2.5 Pro Preview 06-05 came out Jun 5, 2025; Solar Pro 2 came out May 20, 2025. Knowledge cutoff: Gemini 2.5 Flash-Lite Jan 2025, Gemini 2.5 Pro Preview 06-05 Jan 31, 2025, Solar Pro 2 Mar 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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