The Known Good Updated 25 Jul 2026
Google: Gemini 2.5 Pro vs Google: Gemma 3 27B ·Google vs Google

Google: Gemini 2.5 Pro vs Google: Gemma 3 27B — head-to-head comparison

Google: Gemini 2.5 Pro profile Google: Gemma 3 27B profile All comparisons
Google: Gemini 2.5 Pro — Google
Quality
#29 of 61
64based on 4 of 6 evaluations
Known Good Index
Speed
#53 of 316
96.4
Output tokens per second
Price
#262 of 340
$3.44
Blended per 1M tokens
In $1.25 · Out $10.00
Cache hit price
#106 of 206
$0.12
per 1M tokens (−90%)
Context
#29 of 345
1.05M
tokens (~1,600 pages)
Google: Gemma 3 27B — Google
Quality
#47 of 61
37based on 3 of 6 evaluations
Known Good Index
Speed
#262 of 316
24.4
Output tokens per second
Price
#64 of 340
$0.17
Blended per 1M tokens
In $0.08 · Out $0.45
Cache hit price
#62 of 206
$0.040
per 1M tokens (−50%)
Context
#171 of 345
262k
tokens (~400 pages)
Summary

On the Known Good Index, Google: Gemini 2.5 Pro scores 64 and Google: Gemma 3 27B scores 37 — a 28-point lead for Google: Gemini 2.5 Pro. They share 2 published evaluations, with Google: Gemini 2.5 Pro ahead on 2 and Google: Gemma 3 27B ahead on 0.

Blended pricing is $3.44 per 1M tokens for Google: Gemini 2.5 Pro and $0.17 for Google: Gemma 3 27B — Google: Gemma 3 27B is about 19.9× cheaper.

Throughput is 96 tokens per second for Google: Gemini 2.5 Pro and 24 for Google: Gemma 3 27B, with time to first token at 5.4s and 0.9s. Google: Gemini 2.5 Pro accepts 1.05M tokens of context against 262k.

Google: Gemini 2.5 Pro is proprietary; Google: Gemma 3 27B is open weights under Open weights (restricted use). 7 tracked hosts serve one or both.

Generated from tracked data on 25 Jul 2026 · how these comparisons are computed →

At a glance
MetricGoogle: Gemini 2.5 ProGoogle: Gemma 3 27B
Known Good Index 64 based on 4 of 6 evaluations 37 based on 3 of 6 evaluations
Blended $/1M $3.44 $0.17
Output tok/s 96 24
Context window 1.05M 262k
Providers 2 5
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Quality

Known Good Index and the capability indices, side by side

IndicesComponents
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 2.5 ProGoogle: Gemma 3 27B
Known Good Index 64 37
Coding Index 42 —
Mathematics Index 84 47
Science Index 89 44
Reasoning Index — 40
Agentic Index 42 —
Openness Index 5 60
The Known Good

Quality Breakdown

Every evaluation both models report a published score for

Evaluations both models report

Bar = Google: Gemini 2.5 Pro · marker = Google: Gemma 3 27B · scores ingested from Epoch AI (CC-BY 4.0)

GPQA Diamond85 / 49
MATH / AIME84 / 20

Right-hand figures read Google: Gemini 2.5 Pro / Google: Gemma 3 27B. Google: Gemini 2.5 Pro leads on 2 of 2, Google: Gemma 3 27B 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.

MetricGoogle: Gemini 2.5 ProGoogle: Gemma 3 27B
Text Arena 1,457 —
Text Arena (style controlled) 1,446 —
The Known Good

Price & Cost

Published API pricing by token type

Per token typeCache discount
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 2.5 ProGoogle: Gemma 3 27B
Input $/1M $1.25 $0.08
Output $/1M $10.00 $0.45
Blended $/1M $3.44 $0.17
Cache read $/1M $0.125 $0.040
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 2.5 ProGoogle: Gemma 3 27B
Context window 1.05M 262k
Max output tokens 66k 131k
The Known Good

Speed & Latency

Median throughput and time to first token across hosting providers

Output speedTime to first token
Throughput and latency

Medians across all tracked providers, derived from OpenRouter endpoint telemetry.

MetricGoogle: Gemini 2.5 ProGoogle: Gemma 3 27B
Output tokens/s 96 24
Time to first token 5.4s 0.9s
The Known Good

Providers

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

7 hosts
Full provider benchmarks →
Provider Google: Gemini 2.5 Pro blendedGoogle: Gemini 2.5 Pro tok/s Google: Gemma 3 27B blendedGoogle: Gemma 3 27B tok/s
Google AI Studio $1.72 118 — —
Google · first party $1.72 99 — —
Parasail — — $0.17 54
Novita — — $0.14 32
DeepInfra — — $0.10 22
Phala — — $0.23 15
Nebius — — $0.15 12

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 →