text model comparison
Gemini 3.5 Flash-Lite vs Solar Pro 4
Gemini 3.5 Flash-Lite and Solar Pro 4 are both current text models, from Google and Upstage. Both cost $0.30 per 1M input tokens. On Arena Text, Gemini 3.5 Flash-Lite scores 1455 Elo and Solar Pro 4 1386 Elo (Arena, measured October 8, 2026). Gemini 3.5 Flash-Lite has the larger context window, 1,048,576 vs 512,000 tokens.
Data verified October 13, 2026 · Dataset 2026-10-13
Side by side
Standard-tier prices in effect today. The better value in each row is highlighted.
| Fact | Gemini 3.5 Flash-Lite | Solar Pro 4 |
|---|---|---|
| Price per 1M input tokens | $0.30 | $0.30 |
| Price per 1M output tokens | $2.50 | $1.20 (better) |
| Cost of 10M input and 2M output tokens | $8 | $5.40 (better) |
| Arena Text | 1455 Elo (#32 of 49) (better) | 1386 Elo (#45 of 49) |
| GPQA Diamond | 83.3% (#35 of 40) | Not measured |
| FrontierMath Tiers 1-3 (v2) | 26% (#37 of 40) | Not measured |
| Provider | Upstage | |
| Release date | July 21, 2026 | August 6, 2026 |
| Access | API only | API only |
| Context window | 1,048,576 tokens | 512,000 tokens |
| Max output | 65,536 tokens | 128,000 tokens |
| Input | text, image, audio, video | text |
| Output | text | text |
When to choose each
Gemini 3.5 Flash-Lite
Best for
- High-volume extraction, structured parsing, and cost-sensitive subagent trials
Watch out for
- The represented prices are standard API rates; batch, flex, and priority consumption use different rates
Solar Pro 4
Best for
- Korean and Japanese enterprise workloads
- Multi-step agent work with tool calls
Watch out for
- A closed model: Upstage does not disclose its parameter count
- Several of its published benchmark figures are in-house evaluations
Gemini 3.5 Flash-Lite vs Solar Pro 4 FAQ
Which is cheaper, Gemini 3.5 Flash-Lite or Solar Pro 4?
Both cost $0.30 per 1M input tokens. For 10M input and 2M output tokens, Gemini 3.5 Flash-Lite costs $8 and Solar Pro 4 $5.40 at standard rates.
Which scores higher on independent benchmarks, Gemini 3.5 Flash-Lite or Solar Pro 4?
Gemini 3.5 Flash-Lite leads on Arena Text, 1455 Elo to 1386 Elo. Scores are independent evaluations, not either vendor's launch figures.
Which has the larger context window, Gemini 3.5 Flash-Lite or Solar Pro 4?
Gemini 3.5 Flash-Lite has the larger context window, 1,048,576 vs 512,000 tokens.
Related comparisons
Production evaluation
Choosing between Gemini 3.5 Flash-Lite and Solar Pro 4?
Public benchmarks narrow the shortlist. We run both on your own tasks, data and cost limits, then build the routing and review controls to run the winner in production.
- A head-to-head evaluation on your real workload
- Routing between models by cost and difficulty