Gemini 3.5 Flash-Lite vs Solar Pro 4
Gemini 3.5 Flash-Lite and Solar Pro 4 are closely matched at 30.1 and 35.8 on the LLM Stats Score. Solar Pro 4 is 1.6x cheaper per token.
Google · Upstage · Updated for 2026
Which is better?
Gemini 3.5 Flash-Lite and Solar Pro 4 are closely matched on the overall LLM Stats Score at 30.1 and 35.8.
In the 1 individual benchmarks reported for both models, Solar Pro 4 wins 1; this is a narrower head-to-head signal than the composite indexes.
On price, Solar Pro 4 is roughly 1.6x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
Gemini 3.5 Flash-Lite also accepts a larger context window (1,048,576 input tokens), making it the stronger choice for long documents and large codebases.
Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.
Choose Gemini 3.5 Flash-Lite
- you process long inputs — it offers a 1,048,576 token context window
Choose Solar Pro 4
- you value its reported benchmark strengths — it wins 1 of 1 exact shared results
- cost matters — it's about 1.6x cheaper per token
- you want the most recent training data — it shipped Aug 2026
At a glance
The differences that matter most.
Individual benchmarks
6 reported for Gemini 3.5 Flash-Lite · 9 for Solar Pro 4
Gemini 3.5 Flash-Lite outperforms in 0 benchmarks, while Solar Pro 4 is better at 1 benchmark (Terminal-Bench 2.1).
Solar Pro 4 significantly outperforms across most benchmarks.
Human preference
Blind head-to-head votes and playground preference scores
Pricing Analysis
Price comparison per million tokens
For input processing, Gemini 3.5 Flash-Lite ($0.30/1M tokens) costs the same as Solar Pro 4 ($0.30/1M tokens).
For output processing, Gemini 3.5 Flash-Lite ($2.50/1M tokens) is 2.1x more expensive than Solar Pro 4 ($1.20/1M tokens).
In conclusion, Gemini 3.5 Flash-Lite is more expensive than Solar Pro 4.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
Gemini 3.5 Flash-Lite accepts 1,048,576 input tokens compared to Solar Pro 4's 524,288 tokens. Solar Pro 4 can generate longer responses up to 131,072 tokens, while Gemini 3.5 Flash-Lite is limited to 65,536 tokens.
Input capabilities
Documented input modalities across available providers
Gemini 3.5 Flash-Lite supports multimodal inputs, whereas Solar Pro 4 does not.
Gemini 3.5 Flash-Lite can handle both text and other forms of data like images, making it suitable for multimodal applications.
Gemini 3.5 Flash-Lite
Solar Pro 4
License
Usage and distribution terms
Both models are licensed under proprietary licenses.
Both models have usage restrictions defined by their respective organizations.
Proprietary
Closed source
Proprietary
Closed source
Release Timeline
When each model was launched
Gemini 3.5 Flash-Lite was released on 2026-07-21, while Solar Pro 4 was released on 2026-08-06.
Solar Pro 4 is 1 month newer than Gemini 3.5 Flash-Lite.
Jul 21, 2026
1 months ago
Aug 6, 2026
1 months ago
2w newerKnowledge Cutoff
When training data ends
Gemini 3.5 Flash-Lite has a documented knowledge cutoff of 2026-03-31, while Solar Pro 4's cutoff date is not specified.
We can confirm Gemini 3.5 Flash-Lite's training data extends to 2026-03-31, but cannot make a direct comparison without Solar Pro 4's cutoff date.
Mar 2026
—
Provider Availability
Gemini 3.5 Flash-Lite is available from Google. Solar Pro 4 is available from Upstage.
Gemini 3.5 Flash-Lite
Solar Pro 4
Outputs Comparison
Judge for yourself.
Run your own prompts against Gemini 3.5 Flash-Lite and Solar Pro 4 side-by-side, then vote on the output you prefer.
FAQ
Common questions about Gemini 3.5 Flash-Lite vs Solar Pro 4.