The Known Good Updated 29 Jul 2026
gemini-2.0-flash-thinking-exp-01-21 vs Google: Gemini 2.5 Pro ·Google DeepMind,Google vs Google

gemini-2.0-flash-thinking-exp-01-21 vs Google: Gemini 2.5 Pro — head-to-head comparison

gemini-2.0-flash-thinking-exp-01-21 profile Google: Gemini 2.5 Pro profile All comparisons
gemini-2.0-flash-thinking-exp-01-21 — Google DeepMind,Google
Quality
#41 of 62
62based on 3 of 7 evaluations
Known Good Index
Speed
unranked
Output tokens per second
Price
unranked
Blended per 1M tokens
Cache hit price
unranked
per 1M tokens
Context
unranked
tokens
Google: Gemini 2.5 Pro — Google
Quality
#37 of 62
64based on 4 of 7 evaluations
Known Good Index
Speed
#45 of 317
98.2
Output tokens per second
Price
#285 of 370
$3.44
Blended per 1M tokens
In $1.25 · Out $10.00
Cache hit price
#124 of 238
$0.12
per 1M tokens (−90%)
Context
#31 of 375
1.05M
tokens (~1,600 pages)
Summary

On the Known Good Index, gemini-2.0-flash-thinking-exp-01-21 scores 62 and Google: Gemini 2.5 Pro scores 64 — a 2-point lead for Google: Gemini 2.5 Pro. They share 2 published evaluations, with gemini-2.0-flash-thinking-exp-01-21 ahead on 0 and Google: Gemini 2.5 Pro ahead on 2.

Published pricing is tracked for Google: Gemini 2.5 Pro only, at $3.44 per 1M tokens blended.

gemini-2.0-flash-thinking-exp-01-21 is proprietary; Google: Gemini 2.5 Pro is proprietary. 2 tracked hosts serve one or both.

Generated from tracked data on 29 Jul 2026 · how these comparisons are computed →

At a glance
Metricgemini-2.0-flash-thinking-exp-01-21Google: Gemini 2.5 Pro
Known Good Index 62 based on 3 of 7 evaluations 64 based on 4 of 7 evaluations
Blended $/1M $3.44
Output tok/s 98
Context window 1.05M
Providers 0 2
Jump to section

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.

Metricgemini-2.0-flash-thinking-exp-01-21Google: Gemini 2.5 Pro
Known Good Index 62 64
Coding Index 42
Mathematics Index 58 84
Reasoning Index 66
Agentic Index 42
Openness Index 5 5
The Known Good

Quality Breakdown

Every evaluation both models report a published score for

Evaluations both models report

Bar = gemini-2.0-flash-thinking-exp-01-21 · marker = Google: Gemini 2.5 Pro · scores ingested from Epoch AI (CC-BY 4.0)

GPQA Diamond57 / 85
Mock AIME 2024–2558 / 84

Right-hand figures read gemini-2.0-flash-thinking-exp-01-21 / Google: Gemini 2.5 Pro. gemini-2.0-flash-thinking-exp-01-21 leads on 0 of 2, Google: Gemini 2.5 Pro on 2.

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.

Metricgemini-2.0-flash-thinking-exp-01-21Google: Gemini 2.5 Pro
Text Arena 1,458
Text Arena (style controlled) 1,446
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.

Metricgemini-2.0-flash-thinking-exp-01-21Google: Gemini 2.5 Pro
Input $/1M $1.25
Output $/1M $10.00
Blended $/1M $3.44
Cache read $/1M $0.125
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.

Metricgemini-2.0-flash-thinking-exp-01-21Google: Gemini 2.5 Pro
Context window 1.05M
Max output tokens 66k
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.

Metricgemini-2.0-flash-thinking-exp-01-21Google: Gemini 2.5 Pro
Output tokens/s 98
Time to first token 5.5s
The Known Good

Providers

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

2 hosts
Full provider benchmarks →
Provider gemini-2.0-flash-thinking-exp-01-21 blendedgemini-2.0-flash-thinking-exp-01-21 tok/s Google: Gemini 2.5 Pro blendedGoogle: Gemini 2.5 Pro tok/s
Google · first party $1.72 100
Google AI Studio $1.72 94

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 →