Compare / head-to-head
Gemini 3.5 FlashvsSolar Pro 4
Gemini 3.5 Flash and Solar Pro 4 do not yet share a public benchmark, so quality cannot be compared apples-to-apples. Solar Pro 4 is 7x cheaper per token. Gemini 3.5 Flash has the larger context window (1.0M tokens).
Benchmarks from cited public sources; pricing from official pages; status from official provider feeds.
Shared benchmarks
0
no overlap yet
Cheaper per token
Solar Pro 4
7x cheaper, input + output
Larger context
Gemini 3.5 Flash
1.0M tokens
Provider uptime (30d)
100% · —
Google · Upstage
Gemini 3.5 Flash
Google · released 2026-05-19
textvisionaudio
Solar Pro 4
Upstage · released 2026-08-20
text
Quality
Benchmark matrix
0 shared · 15 only Gemini 3.5 Flash · 2 only Solar Pro 4| Benchmark | Gemini 3.5 Flash | Solar Pro 4 | Δ | Edge |
|---|---|---|---|---|
| Reported by both · 0 | ||||
| No public benchmark is reported for both models yet. | ||||
| Only Gemini 3.5 Flash reports · 15 | ||||
| GPQA Diamond | 92.8% ↗epoch | not reported | — | — |
| AIME 2026 | 95% ↗matharena ⚠ | not reported | — | — |
| ARC-AGI-2 | 72.1% ↗ | not reported | — | — |
| FrontierMath Tier 4 v2 (Epoch AI run) | 26.8% ↗epoch | not reported | — | — |
| FrontierMath Tiers 1-3 v2 (Epoch AI run) | 62.8% ↗epoch | not reported | — | — |
| GDPVal-AA | 1656 ↗ | not reported | — | — |
| Humanity's Last Exam (full set, text + MM) | 40.2% ↗ | not reported | — | — |
| MCP Atlas | 83.6% ↗ | not reported | — | — |
| MMMU-Pro | 83.6% ↗ | not reported | — | — |
| OSWorld-Verified | 78.4% ↗ | not reported | — | — |
| OTIS Mock AIME 2024-2025 (Epoch AI run) | 95.6% ↗epoch | not reported | — | — |
| SimpleQA Verified | 66.2% ↗epoch | not reported | — | — |
| SWE-Bench Pro (Public) | 55.1% ↗ | not reported | — | — |
| SWE-bench Verified (Epoch AI run) | 79.3% ↗epoch | not reported | — | — |
| Terminal-bench 2.1 | 76.2% ↗ | not reported | — | — |
| Only Solar Pro 4 reports · 2 | ||||
| LMArena Elo | not reported | 1377.3 ↗ | — | — |
| Artificial Analysis Intelligence Index | not reported | 42 ↗ | — | — |
Scores tagged "epoch" or "matharena" are independent runs, used only where the lab has not published its own; ⚠ marks rows MathArena flags as released after the competition. Higher is better on every row. Δ is Gemini 3.5 Flash minus Solar Pro 4 in the benchmark's own unit. "Not reported" means the lab has not published that figure; it is not a zero. ↗ opens the source.
Specs & pricing
Side by side
Official pricing pages and model cards| Spec | Gemini 3.5 Flash | Solar Pro 4 | Edge |
|---|---|---|---|
| Context window | 1.0M tokens | 512K tokens | Gemini 3.5 Flash |
| Max output | 66K tokens | — | — |
| Input price / 1M | $1.5 ↗ | $0.3 ↗ | Solar Pro 4 |
| Output price / 1M | $9 ↗ | $1.2 ↗ | Solar Pro 4 |
| Cached input / 1M | $0.15 ↗ | $0.06 ↗ | Solar Pro 4 |
| Input + output / 1M Lower is cheaper. List prices; batch, tool and regional fees excluded. | $10.5 | $1.5 | Solar Pro 4 |
| Modalities | text · vision · audio | text | Gemini 3.5 Flash |
| Released | 2026-05-19 | 2026-08-20 | — |
| Cited benchmark scores | 15 | 2 | — |
Reliability
Provider status
Last 60 days · refreshed daily on this page · live on /statusMore matchups
Gemini 3.5 Flash vs …
Models sharing the most benchmarksMore matchups
Solar Pro 4 vs …
Models sharing the most benchmarksBuilt by Respan
Which one wins on your data?
Public benchmarks are a starting point. Run Gemini 3.5 Flash and Solar Pro 4 on your own prompts with Respan evals, or route to either through one gateway key with automatic failover.