The Known Good Updated 8 Sep 2026 Subscribe
DeepSeek: DeepSeek V4 Pro 0423 vs Google: Gemini 3 Flash Preview ·DeepSeek vs Google

DeepSeek: DeepSeek V4 Pro 0423 vs Google: Gemini 3 Flash Preview — head-to-head comparison

DeepSeek: DeepSeek V4 Pro 0423 profile Google: Gemini 3 Flash Preview profile All comparisons
DeepSeek: DeepSeek V4 Pro 0423 — DeepSeek
Quality
#4 of 65
93based on 3 of 7 evaluations
Known Good Index
Speed
#220 of 341
40.4
Output tokens per second
Price
#260 of 450
$1.19
Blended per 1M tokens
In $0.96 · Out $1.91
Cache hit price
#160 of 344
$0.080
per 1M tokens (−92%)
Context
#47 of 487
1.05M
tokens (~1,600 pages)
Google: Gemini 3 Flash Preview — Google
Quality
#16 of 65
83based on 4 of 7 evaluations
Known Good Index
Speed
#70 of 341
87.3
Output tokens per second
Price
#256 of 450
$1.12
Blended per 1M tokens
In $0.50 · Out $3.00
Cache hit price
#121 of 344
$0.050
per 1M tokens (−90%)
Context
#69 of 487
1.05M
tokens (~1,600 pages)
Summary

On the Known Good Index, DeepSeek: DeepSeek V4 Pro 0423 scores 93 and Google: Gemini 3 Flash Preview scores 83 — a 10-point lead for DeepSeek: DeepSeek V4 Pro 0423. They share 3 published evaluations, with DeepSeek: DeepSeek V4 Pro 0423 ahead on 3 and Google: Gemini 3 Flash Preview ahead on 0.

Blended pricing is $1.19 per 1M tokens for DeepSeek: DeepSeek V4 Pro 0423 and $1.12 for Google: Gemini 3 Flash Preview, within 10% of each other.

Throughput is 40 tokens per second for DeepSeek: DeepSeek V4 Pro 0423 and 87 for Google: Gemini 3 Flash Preview, with time to first token at 1.6s and 6.3s. DeepSeek: DeepSeek V4 Pro 0423 accepts 1.05M tokens of context against 1.05M.

DeepSeek: DeepSeek V4 Pro 0423 is open weights under Open weights (unrestricted); Google: Gemini 3 Flash Preview is proprietary. 23 tracked hosts serve one or both.

Generated from tracked data on 9 Sep 2026 · how these comparisons are computed →

At a glance
MetricDeepSeek: DeepSeek V4 Pro 0423Google: Gemini 3 Flash Preview
Known Good Index 93 based on 3 of 7 evaluations 83 based on 4 of 7 evaluations
Blended $/1M $1.19 $1.12
Output tok/s 40 87
Context window 1.05M 1.05M
Providers 21 2
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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.

MetricDeepSeek: DeepSeek V4 Pro 0423Google: Gemini 3 Flash Preview
Known Good Index 93 83
Coding Index 72
Openness Index 60 5
The Known Good

Quality Breakdown

Every evaluation both models report a published score for

Evaluations both models report

Bar = DeepSeek: DeepSeek V4 Pro 0423 · marker = Google: Gemini 3 Flash Preview · scores ingested from Epoch AI (CC-BY 4.0)

GPQA Diamond91 / 89
Mock AIME 2024–2597 / 96
SWE-bench Verified78 / 75

Right-hand figures read DeepSeek: DeepSeek V4 Pro 0423 / Google: Gemini 3 Flash Preview. DeepSeek: DeepSeek V4 Pro 0423 leads on 3 of 3, Google: Gemini 3 Flash Preview 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.

MetricDeepSeek: DeepSeek V4 Pro 0423Google: Gemini 3 Flash Preview
Text Arena 1,451
Text Arena (style controlled) 1,458
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.

MetricDeepSeek: DeepSeek V4 Pro 0423Google: Gemini 3 Flash Preview
Input $/1M $0.96 $0.50
Output $/1M $1.91 $3.00
Blended $/1M $1.19 $1.12
Cache read $/1M $0.080 $0.050
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.

MetricDeepSeek: DeepSeek V4 Pro 0423Google: Gemini 3 Flash Preview
Context window 1.05M 1.05M
Max output tokens 384k 66k
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.

MetricDeepSeek: DeepSeek V4 Pro 0423Google: Gemini 3 Flash Preview
Output tokens/s 40 87
Time to first token 1.6s 6.3s
The Known Good

Providers

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

23 hosts
Full provider benchmarks →
Provider DeepSeek: DeepSeek V4 Pro 0423 blendedDeepSeek: DeepSeek V4 Pro 0423 tok/s Google: Gemini 3 Flash Preview blendedGoogle: Gemini 3 Flash Preview tok/s
BaseTen $2.17 65
Parasail $2.17 63
CoreWeave $1.50 55
Novita $2.00 49
Azure · first party $2.39 46
Baidu · first party $2.11 43
Alibaba · first party $1.77 39
Together $2.17 39
Venice $2.06 38
NextBit $2.24 37
Ionstream $1.41 35
SiliconFlow $1.91 34
StreamLake $1.19 34
DeepSeek · first party $0.99 31
DeepInfra $1.62 30
Wafer $1.50 28
AtlasCloud $2.10 27
DigitalOcean $1.09 27
GMICloud $1.20 26
Cloudflare $1.50 12
Fireworks $1.20
Google · first party $0.56 90
Google AI Studio $0.56 84

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)Elo — Arena Full attribution →