Model Tracker

Gemini 3.5 Flash

Gemini 3.5 Flash is an AI model made by Google. Google released it on 19 May 2026. It takes text, image, video, audio and returns text.

Google

Gemini 3.5 Flash is an AI model made by Google. Google released it on 19 May 2026. It takes text, image, video, audio and returns text. Its longest answer is 65,536 tokens. Its knowledge cutoff is January 2025.

Released: 19 May 2026 — ai.google.dev, read 16 October 2026
Status: Not confirmed: two readings disagree: deprecated and ga
Takes: Text, Image, Video, Audio — deepmind.google, read 16 October 2026
Returns: Text — deepmind.google, read 16 October 2026
Open weights: Not confirmed: The official model card and documentation do not state that downloadable model weights are available or specify whether the weights are open.
Licence: Not confirmed: The official model card and documentation do not name a licence for Gemini 3.5 Flash weights.
Context window: Not confirmed: two readings disagree: 1048576 and 1000000
Longest answer: 65,536 tokens — ai.google.dev, read 16 October 2026
Knowledge cutoff: January 2025 — ai.google.dev, read 16 October 2026
API price, input: Not confirmed: The current official pricing page does not print a standard-tier input price for Gemini 3.5 Flash.
API price, output: Not confirmed: The current official pricing page does not print a standard-tier output price for Gemini 3.5 Flash.
Where: Not confirmed: two readings disagree: api, app, cloud and api, app
Parameters: Not confirmed: The official model card and documentation do not publish a parameter count for Gemini 3.5 Flash.
Model card: https://deepmind.google/models/model-cards/gemini-3-5-flash/ — deepmind.google, read 16 October 2026

Benchmarks

Measured by others, not by the maker: each score with the name the measurer gives the model and the setting it ran, its day and its licence.

Arena

Text Arena, gemini-3.5-flash-high: 1,477 (1,474–1,481, 48,486 votes), published 15 October 2026
Text Arena, gemini-3.5-flash-medium: 1,476 (1,472–1,480, 47,292 votes), published 15 October 2026
Code Arena (WebDev), Gemini 3.5 Flash (High): 1,499 (1,492–1,507, 9,382 votes), published 18 October 2026
Code Arena (WebDev), Gemini 3.5 Flash (Medium): 1,491 (1,485–1,498, 12,139 votes), published 18 October 2026
Vision Arena, gemini-3.5-flash-medium: 1,285 (1,278–1,292, 13,180 votes), published 9 October 2026
Vision Arena, gemini-3.5-flash-high: 1,284 (1,277–1,291, 13,103 votes), published 9 October 2026

Arena’s leaderboard dataset (lmarena-ai/leaderboard-dataset on Hugging Face), CC BY 4.0: ratings from people’s votes between two anonymous models, as Arena publishes them. Data · CC BY 4.0

Epoch AI

Epoch Capabilities Index, Gemini 3.5 Flash: 154.4 (152.4–156.5), as of 19 October 2026
GPQA Diamond, gemini-3.5-flash_high: 92.8% (± 1.6), run 22 May 2026
GPQA Diamond, gemini-3.5-flash_low: 88.9% (± 2.2), run 6 August 2026
GPQA Diamond, gemini-3.5-flash_minimal: 86.4% (± 2.4), run 15 July 2026
FrontierMath, tiers 1–3, gemini-3.5-flash_high: 62.8% (± 2.9), run 10 June 2026
FrontierMath, tier 4, gemini-3.5-flash_high: 26.8% (± 7.0), run 10 June 2026
SWE-bench Verified, gemini-3.5-flash_high: 79.3% (± 1.8), run 1 June 2026
OTIS Mock AIME 2024–2025, gemini-3.5-flash_high: 95.6% (± 2.7), run 25 May 2026
OTIS Mock AIME 2024–2025, gemini-3.5-flash_low: 88.9% (± 4.7), run 6 August 2026
OTIS Mock AIME 2024–2025, gemini-3.5-flash_minimal: 80.0% (± 6.0), run 15 July 2026
SimpleQA Verified, gemini-3.5-flash_high: 66.2% (± 1.5), run 27 August 2026

Epoch AI, ‘Capabilities & benchmarking’, epoch.ai/benchmarks, CC BY 4.0: Epoch AI’s own runs and its Capabilities Index. Data · CC BY 4.0

Questions

When was Gemini 3.5 Flash released?

Google released Gemini 3.5 Flash on 19 May 2026.

What does Gemini 3.5 Flash take and return?

Gemini 3.5 Flash takes text, image, video, audio and returns text.

What is the knowledge cutoff of Gemini 3.5 Flash?

The knowledge cutoff of Gemini 3.5 Flash is January 2025.

Sources

Gemini 3.5 Flash - Model Card (read 16 October 2026)
Release notes (read 16 October 2026)
Gemini 3.5 Flash (read 16 October 2026)
Gemini Developer API pricing (read 16 October 2026)
What's new in Gemini 3.5 Flash (read 16 October 2026)

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