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Gemini 3.1 Pro PreviewvsGemma 4 12B Unified

Gemini 3.1 Pro Preview leads 2 of 2 shared benchmarks. Gemini 3.1 Pro 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
2 – 0
Gemini 3.1 Pro Preview leads
Cheaper per token
list price, input + output
Larger context
Gemini 3.1 Pro Preview
1.0M tokens
Provider uptime (30d)
100%
Google
Gemini 3.1 Pro Preview
Google · released 2026-02-19
textvisionaudio
Context
1.0M
Max out
66K
Input /1M
$2
Output /1M
$12
Cached /1M
$0.2
Scores
10 · 8 core
Gemma 4 12B Unified
Google · released 2026-06-03
textvisionaudio
Context
256K
Max out
Input /1M
Output /1M
Cached /1M
Scores
5 · 4 core
Quality

Benchmark matrix

BenchmarkGemini 3.1 Pro PreviewGemma 4 12B UnifiedΔEdge
Reported by both · 2
GPQA Diamond94.3% 78.8% +15.5 ptGemini 3.1 Pro Preview
AIME 202698.3% matharena77.5% +20.8 ptGemini 3.1 Pro Preview
Only Gemini 3.1 Pro Preview reports · 7
LMArena Elo1480.1 not reported
ARC-AGI-277.1% not reported
FrontierMath Tier 4 v2 (Epoch AI run)26.8% epochnot reported
FrontierMath Tiers 1-3 v2 (Epoch AI run)59.6% epochnot reported
OTIS Mock AIME 2024-2025 (Epoch AI run)95.6% epochnot reported
SimpleQA Verified73.5% epochnot reported
SWE-Bench Pro54.2% not reported
Only Gemma 4 12B Unified reports · 3
MMLU-Pronot reported77.2%
Humanity's Last Exam (no tools)not reported5.2%
LiveCodeBench v6not reported72%
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 3.1 Pro Preview minus Gemma 4 12B Unified 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 3.1 Pro PreviewGemma 4 12B UnifiedEdge
Context window1.0M tokens256K tokensGemini 3.1 Pro Preview
Max output66K tokens
Input price / 1M$2
Output price / 1M$12
Cached input / 1M$0.2
Input + output / 1M
Lower is cheaper. List prices; batch, tool and regional fees excluded.
$14
Modalitiestext · vision · audiotext · vision · audioTie
Released2026-02-192026-06-03
Cited benchmark scores105
Reliability

Google status

All providers
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Which one wins on your data?

Public benchmarks are a starting point. Run Gemini 3.1 Pro Preview and Gemma 4 12B Unified on your own prompts with Respan evals, or route to either through one gateway key with automatic failover.