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Compare / head-to-head

Gemini 3 Flash Previewvso3-pro

Gemini 3 Flash Preview and o3-pro do not yet share a public benchmark, so quality cannot be compared apples-to-apples. 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
0
no overlap yet
Cheaper per token
list price, input + output
Larger context
Gemini 3 Flash Preview
1.0M tokens
Provider uptime (30d)
100% · 94.2446%
Google · OpenAI
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
o3-pro
OpenAI · released 2025-06-10
textvision
Context
200K
Max out
100K
Input /1M
$20
Output /1M
$80
Cached /1M
Scores
0 · 0 core
Quality

Benchmark matrix

BenchmarkGemini 3 Flash Previewo3-proΔEdge
Reported by both · 0
No public benchmark is reported for both models yet.
Only Gemini 3 Flash Preview reports · 11
SWE-bench Verified78% not reported
GPQA Diamond90.4% not reported
AIME 202595.2% not reported
Humanity's Last Exam (no tools)33.7% 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 o3-pro reports · 0
o3-pro reports nothing Gemini 3 Flash Preview does not.
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 o3-pro 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 Previewo3-proEdge
Context window1.0M tokens200K tokensGemini 3 Flash Preview
Max output66K tokens100K tokenso3-pro
Input price / 1M$20
Output price / 1M$80
Cached input / 1M
Input + output / 1M
Lower is cheaper. List prices; batch, tool and regional fees excluded.
$100
Modalitiestext · vision · audiotext · visionGemini 3 Flash Preview
Released2025-12-172025-06-10
Cited benchmark scores130
Reliability

Provider status

All providers
More matchups

Gemini 3 Flash Preview vs …

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Public benchmarks are a starting point. Run Gemini 3 Flash Preview and o3-pro on your own prompts with Respan evals, or route to either through one gateway key with automatic failover.