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Gemini 3.5 Flash

API ID gemini-3.5-flash

gemini-3.5-flash is a Google model, released May 2026. It has a 1,048,576-token context window and up to 65,536 output tokens. It takes image and PDF input and supports function calling, structured outputs and reasoning. Standard price: $1.50 input and $9.00 output per 1M tokens.

Gemini 3.5 Flash

Google's description
Status
Active
Released
May 2026
Shutdown
none announced

No deprecation or shutdown date has been announced as of October 15, 2026.

How to migrate to Gemini 3.6 Flash

Free tier: in place when tracking began (October 7, 2026) (source) · All free models

Benchmarks

Scores as each source published them
or

Comparing with Gemini 3 Flash Preview, the previous model in this line. A score is compared only with the same benchmark from the same source, at the same setting where both have it. Full comparison: prices, limits, features

Arena

ArenaGemini 3.5 FlashGemini 3 Flash PreviewChangeRankDateSource
Text
Other settings
  • 1476 ±4 vs not rated medium effort
By category
  • Math 1496 rank 19 vs 1475 (+21, within range) at high effort (vs no setting)
  • Creative writing 1464 rank 23 vs 1457 (+7, within range) at high effort (vs no setting)
  • Instruction following 1465 rank 43 vs 1458 (+7, within range) at high effort (vs no setting)
  • Hard prompts 1495 rank 42 vs 1493 (+2, within range) at high effort (vs no setting)
  • Long prompts 1482 rank 39 vs 1476 (+6, within range) at high effort (vs no setting)
  • Multi-turn 1480 rank 39 vs 1482 (−2, within range) at high effort (vs no setting)
  • Expert 1493 rank 54 vs 1497 (−4, within range) at high effort (vs no setting)
1477 ±41473 ±4+4
within range		29 of 415
48,486 votes		Oct 13, 2026source
Text: Coding
Other settings
  • 1506 ±6 vs not rated medium effort
1508 ±61506 ±8+2
within range		63 of 410
13,853 votes		Oct 13, 2026source
WebDev
Other settings
  • 1491 ±7 vs not rated medium effort
1499 ±71440 ±9+5958 of 142
9,415 votes		Oct 13, 2026source
Vision
Other settings
  • 1284 ±7 vs not rated high effort
1285 ±71273 ±5+12
within range		22 of 165
13,180 votes		Oct 9, 2026source
Document
Other settings
  • 1453 ±9 vs not rated high effort
1461 ±81439 ±9+2225 of 44
6,500 votes		Sep 13, 2026source

Rated as gemini-3.5-flash-high (high effort); Gemini 3 Flash Preview as gemini-3-flash. Some were rated at different settings; ratings on one arena share one scale, so the difference still reads directly. Ratings come from people voting between two anonymous answers; Text, Vision and Document are style-controlled, as on arena.ai. Not rated on Search, where Gemini 3 Flash Preview is. Data: Arena (arena.ai), CC BY 4.0.

Epoch AI

BenchmarkGemini 3.5 FlashGemini 3 Flash PreviewChangeSettingRunSource
FrontierMath Tier 426.8%17.1%+9.7 ptshigh effort (vs no setting)Jun 10, 2026source
FrontierMath Tiers 1-362.8%51.2%+11.6 ptshigh effort (vs no setting)Jun 10, 2026source
GPQA Diamond
Other settings
  • 88.9% vs not run low effort
  • 86.4% vs not run minimal effort
92.8%89.4%+3.4 ptshigh effortMay 22, 2026source
OTIS Mock AIME 2024-2025
Other settings
  • 88.9% vs not run low effort
  • 80.0% vs not run minimal effort
95.6%95.6%0 ptshigh effortMay 25, 2026source
SimpleQA Verified66.2%66.8%−0.6 ptshigh effortAug 27, 2026source
SWE-bench Verified79.3%75.4%+3.9 ptshigh effort (vs no setting)Jun 1, 2026source

Run independently by Epoch AI. Data: Epoch AI, Capabilities & benchmarking (epoch.ai/benchmarks), CC BY.

On cloud platforms

All platform dates
PlatformPlatform IDStateShutdownTime leftReplacementSource
Google Cloud Vertex AIgemini-3.5-flashActivenot before May 19, 2027—source

Read daily from each platform's own pages. The shutdown date and countdown on this page use Google's own date.

Aliases pointing here: gemini-flash-latest (since May 19, 2026, per Google)

Features

Compare models
FeatureValueSinceSource
Structured outputsThe model can be held to a JSON schema you supply, so every reply parses without retries or cleanup.Supportedin place when tracking began (October 6, 2026)source
Function callingAlso called tool use. You describe functions; the model replies with a function name and arguments for your code to run, then uses the result.Supportedin place when tracking began (October 6, 2026)source
Prompt cachingA prompt prefix you send again and again (system prompt, documents, tools) is cached, so later requests cost less and start faster.Supportedin place when tracking began (October 6, 2026)source
Batch APISend many requests as one job that runs in the background, usually finished within 24 hours, at a lower price than live requests.Supportedin place when tracking began (October 6, 2026)source
Image inputImages such as screenshots, photos and charts can go in the prompt for the model to read.Supportedin place when tracking began (October 6, 2026)source
PDF inputPDF files can go in the prompt directly, without converting them to text first.Supportedin place when tracking began (October 6, 2026)source
Reasoning / thinkingThe model can work through a problem step by step before it answers: usually better answers to hard questions, at the cost of more tokens and time.Supportedin place when tracking began (October 6, 2026)source
Built-in web searchThe company's API can search the web for the model during a request and cite its sources; you don't need a search service of your own.Supportedin place when tracking began (October 6, 2026)source
Context windowThe most the model can work with in one request, in tokens: your prompt, conversation history and files. A token is about three-quarters of an English word.1,048,576 tokensin place when tracking began (October 6, 2026)source
Max output tokensThe longest reply the model can write in one response, in tokens. A token is about three-quarters of an English word.65,536 tokensin place when tracking began (October 6, 2026)source

Not published by Google: Fine-tuning, temperature parameter, top_p parameter, logprobs.

Price history

USD per 1M tokens, standard tier
$0.00$2.00$4.00$6.00$8.00$10.00Oct 2026In $1.50Out $9.00Oct 1, 2026 to Oct 15, 2026: Input $1.50, Output $9.00
$0.00$2.00$4.00$6.00$8.00$10.00Oct 2026In $1.50Out $9.00Oct 1, 2026 to Oct 15, 2026: Input $1.50, Output $9.00

We started recording this model's prices on Oct 1, 2026. The history grows with each daily check.

Show as a table
FromTypePrice
Oct 1, 2026Input$1.50
Oct 1, 2026Output$9.00

Prices

USD per 1M tokens, every type and band, by tier
TypePrice $/1MIn effect
Standard
input$1.50
cached input$0.15
output$9.00
cache storage per hour$1.00
Batch
input$0.75
cached input$0.075
output$4.50
cache storage per hour$1.00
Flex
input$0.75
cached input$0.08
output$4.50
cache storage per hour$1.00
Priority
input$2.70
cached input$0.27
output$16.20
cache storage per hour$1.00

Changelog

Changes we detected on Google's pages
  1. No longer listed

    gemini-3.5-flash no longer appears on Google's gemini-pricing page

    Heads-up

Related news

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Last checked · Sources: Google deprecations, Google pricing, Google models, Google aliases, Google api models