The Known Good Updated 8 Oct 2026 Subscribe
Google: Gemini 3 Flash Preview vs OpenAI: o1 ·Google vs OpenAI

Google: Gemini 3 Flash Preview vs OpenAI: o1 — head-to-head comparison

Google: Gemini 3 Flash Preview profile OpenAI: o1 profile All comparisons
Google: Gemini 3 Flash Preview — Google
Quality
#15 of 65
83based on 4 of 7 evaluations
Known Good Index
Speed
#75 of 356
104.4
Output tokens per second
Price
#288 of 504
$1.12
Blended per 1M tokens
In $0.50 · Out $3.00
Cache hit price
#149 of 384
$0.050
per 1M tokens (−90%)
Context
#83 of 550
1.05M
tokens (~1,600 pages)
OpenAI: o1 — OpenAI
Quality
#28 of 65
69based on 5 of 7 evaluations
Known Good Index
Speed
#109 of 356
87.0
Output tokens per second
Price
#490 of 504
$26.25
Blended per 1M tokens
In $15.00 · Out $60.00
Cache hit price
#384 of 384
$7.50
per 1M tokens (−50%)
Context
#395 of 550
200k
tokens (~300 pages)
Summary

On the Known Good Index, Google: Gemini 3 Flash Preview scores 83 and OpenAI: o1 scores 69 — a 13-point lead for Google: Gemini 3 Flash Preview. They share 2 published evaluations, with Google: Gemini 3 Flash Preview ahead on 2 and OpenAI: o1 ahead on 0.

Blended pricing is $1.12 per 1M tokens for Google: Gemini 3 Flash Preview and $26.25 for OpenAI: o1 — Google: Gemini 3 Flash Preview is about 23.3× cheaper.

Throughput is 104 tokens per second for Google: Gemini 3 Flash Preview and 87 for OpenAI: o1, with time to first token at 1.5s and 3.7s. Google: Gemini 3 Flash Preview accepts 1.05M tokens of context against 200k.

Google: Gemini 3 Flash Preview is proprietary; OpenAI: o1 is proprietary. 3 tracked hosts serve one or both.

Generated from tracked data on 8 Oct 2026 · how these comparisons are computed →

At a glance
MetricGoogle: Gemini 3 Flash PreviewOpenAI: o1
Known Good Index 83 based on 4 of 7 evaluations 69 based on 5 of 7 evaluations
Blended $/1M $1.12 $26.25
Output tok/s 104 87
Context window 1.05M 200k
Providers 2 1
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Quality

Known Good Index and the capability indices, side by side

Index scores

Each index is min-max normalised across tracked models and scaled 0–100 from published evaluations. We do not run these evaluations.

MetricGoogle: Gemini 3 Flash PreviewOpenAI: o1
Known Good Index 83 69
Coding Index 72 —
Mathematics Index — 85
Reasoning Index — 61
Openness Index 5 5
The Known Good

Quality Breakdown

Every evaluation both models report a published score for

Evaluations both models report

Bar = Google: Gemini 3 Flash Preview · marker = OpenAI: o1 · scores ingested from Epoch AI (CC-BY 4.0)

GPQA Diamond89 / 77
Mock AIME 2024–2596 / 73

Right-hand figures read Google: Gemini 3 Flash Preview / OpenAI: o1. Google: Gemini 3 Flash Preview leads on 2 of 2, OpenAI: o1 on 0.

The Known Good

Arena Elo

Human preference rating from blind pairwise votes

Arena ratings

Elo from blind pairwise votes, ingested from Arena. Higher is better.

Neither model currently appears in an arena we ingest.

The Known Good

Price & Cost

Published API pricing by token type

Published pricing

USD per 1M tokens. Blended is a 3:1 input:output mix. Live from OpenRouter, cross-checked against models.dev. Lower is better.

MetricGoogle: Gemini 3 Flash PreviewOpenAI: o1
Input $/1M $0.50 $15.00
Output $/1M $3.00 $60.00
Blended $/1M $1.12 $26.25
Cache read $/1M $0.050 $7.500
The Known Good
We publish blended price rather than cost-per-task. Cost-per-task requires token counts from an evaluation suite we do not run. Blended price is computed from published rates and is fully reproducible — see the pricing methodology.

Context Window

Maximum input accepted and maximum output emitted

Context and output limits

Provider-declared limits, from metadata via models.dev and OpenRouter. Higher is better.

MetricGoogle: Gemini 3 Flash PreviewOpenAI: o1
Context window 1.05M 200k
Max output tokens 66k 100k
The Known Good

Speed & Latency

Mean throughput and time to first token across hosting providers, over successful measurements from the last 48 hours

Throughput and latency

Means across all tracked providers over successful measurements from the last 48 hours, derived from OpenRouter endpoint telemetry.

MetricGoogle: Gemini 3 Flash PreviewOpenAI: o1
Output tokens/s 104 87
Time to first token 1.5s 3.7s
The Known Good

Providers

Which hosts serve each model, and at what price and speed

3 hosts
Full provider benchmarks →
Provider Google: Gemini 3 Flash Preview blendedGoogle: Gemini 3 Flash Preview tok/s OpenAI: o1 blendedOpenAI: o1 tok/s
Google AI Studio $0.56 105 — —
Google · first party $0.56 104 — —
OpenAI · first party — — $26.25 —

Per-host pricing and telemetry from OpenRouter. A dash means that host does not serve that model.

The Known Good
Sources for this page
Pricing & providers — OpenRouter Metadata — models.dev Benchmarks — Epoch AI (CC-BY 4.0) Full attribution →