The Model Index
Models/Google

Gemini 3.5 Flash

GoogleReleased 19 May 2026ClosedFlagshipDate verified
165154–176Index score#32 of 229 models
5/ 8Core tests taken5 of 6 areas · plus 14 anchor tests
−12Versus the frontier at releasebest then: GPT-5.5Replaced by Gemini 3.6 Flash
$1.5/ $9.0Price per million tokensinput / output, list price
1.05MContext windowtokens it reads at once

Where it sitson the frontier

Claude Opus 4.6 reached this score 3 months earlier.

Test resultsby area · tick = best by any model

Reasoning & knowledgeevidence
GPQA Diamond
93%
Humanity's Last Exam
no result
Mathsevidence
FrontierMath T1-3
63%
Codingevidence
SWE-bench Verified
79%
Terminal-Bench
no result
Agentsevidence
APEX-Agents
28%
Novel problemsevidence
ARC-AGI-2
72%
Long tasksno evidence yet
METR time horizon
no result

Independent results from the Epoch AI benchmarking hub, best reasoning setting. The core tests are shown here; anchor tests also inform the score and can be shown above.

What others sayrank on each leaderboard

Further left is better. Leaderboards measure different things: LMArena is people voting blind between two answers, the others are test scores. Click any row for the source.

Best attop three among current models

Where this model places in the top three of today's models, on category leaderboards and on our core tests.

Where to use itprices checked 1 Oct 2026

Provider prices come from OpenRouter's live listing; going direct to a provider can differ. Subscriptions are the lab's own apps.

Facts and sources

Released19 May 2026
Announcementblog.google ↗
Release entryGemini 3.5 Flash (3.5 Pro announced; unreleased)
Scored asGemini 3.5 Flash
Artificial Analysis index–
Output speed–
Hugging Faceclosed weights

Google releasesaround this one