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Gemini 3 Flash PreviewvsSolar Open 2 250B-A15B

Gemini 3 Flash Preview leads 3 of 3 shared benchmarks. Gemini 3 Flash Preview has the larger context window (1.0M tokens).

Benchmarks from cited public sources; pricing from official pages; status from official provider feeds.

Shared benchmarks
3 – 0
Gemini 3 Flash Preview leads
Cheaper per token
list price, input + output
Larger context
Gemini 3 Flash Preview
1.0M tokens
Provider uptime (30d)
100% · —
Google · Upstage
Gemini 3 Flash Preview
Google · released 2025-12-17
textvisionaudio
Context
1.0M
Max out
66K
Input /1M
Output /1M
Cached /1M
Scores
13 · 9 core
Solar Open 2 250B-A15B
Upstage · released 2026-07-24
text
Context
1M
Max out
Input /1M
Output /1M
Cached /1M
Scores
16 · 5 core
Quality

Benchmark matrix

BenchmarkGemini 3 Flash PreviewSolar Open 2 250B-A15BΔEdge
Reported by both · 3
SWE-bench Verified78% 70.4% +7.6 ptGemini 3 Flash Preview
GPQA Diamond90.4% 86.3% +4.1 ptGemini 3 Flash Preview
Humanity's Last Exam (no tools)33.7% 28.8% +4.9 ptGemini 3 Flash Preview
Only Gemini 3 Flash Preview reports · 8
AIME 202595.2% not reported
FrontierMath Tier 4 v2 (Epoch AI run)17.1% epochnot reported
FrontierMath Tiers 1-3 v2 (Epoch AI run)51.2% epochnot reported
MMMU-Pro81.2% not reported
OTIS Mock AIME 2024-2025 (Epoch AI run)95.6% epochnot reported
SimpleQA Verified68.7% not reported
SWE-bench Verified (Epoch AI run)75.4% epochnot reported
Terminal-Bench 2.047.6% not reported
Only Solar Open 2 250B-A15B reports · 13
MMLU-Pronot reported86.2%
AIME 2026not reported95.7%
AA-LCRnot reported62.3%
APEX-Agentsnot reported16.6%
ArtifactsBenchnot reported55.9%
GDPval-AA v2not reported1128
HMMT 2026-02not reported93.9%
IFBenchnot reported80%
LiveCodeBench v6not reported92.4%
MCP Atlasnot reported58.2%
Multi-Challengenot reported61%
Tau3-Bench (banking)not reported19.6%
Terminal Bench Hardnot reported28.3%
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 Flash Preview minus Solar Open 2 250B-A15B 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

SpecGemini 3 Flash PreviewSolar Open 2 250B-A15BEdge
Context window1.0M tokens1M tokensGemini 3 Flash Preview
Max output66K tokens
Input price / 1M
Output price / 1M
Cached input / 1M
Input + output / 1M
Lower is cheaper. List prices; batch, tool and regional fees excluded.
Modalitiestext · vision · audiotextGemini 3 Flash Preview
Released2025-12-172026-07-24
Cited benchmark scores1316
Reliability

Provider status

All providers
More matchups

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Which one wins on your data?

Public benchmarks are a starting point. Run Gemini 3 Flash Preview and Solar Open 2 250B-A15B on your own prompts with Respan evals, or route to either through one gateway key with automatic failover.