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Google DeepMind · Gemini
No. 14

Gemini 3.5 Flash

Fast, cheap multimodal workhorse with near-Pro quality.

FastClosed weightsText, Image, Audio, Video, Pdf
Field notes
Context window
1.0Mtokens
Max output
66Ktokens
Input price
$1.50/ 1M tokens
Output price
$9/ 1M tokens
Cached input
$0.15/ 1M tokens
Modalities
Text, Image, Audio, Video, Pdf
Knowledge cutoff
Jan 2025
Released
May 2026
Approx. speed
—
Overview

What this model is

Gemini 3.5 Flash is Google's newest fast tier, balancing strong quality with low latency and a 1M-token context. Google markets it as beating the older Pro flagship on coding and agentic work, and it is an excellent-value multimodal workhorse. As with the wider Gemini line, its real-world reliability on long autonomous coding trails the Claude/GPT frontier even where benchmarks look competitive.

Strengths

  • Excellent price-to-quality for high-volume work
  • Fast multimodal (image/video/PDF) processing
  • Full 1M-token context window
  • Strong general reasoning for its tier

Trade-offs

  • Agentic coding reliability below the frontier
  • Weaker than Pro on the hardest reasoning
  • Output capped at ~64K tokens

Best for

  • High-volume multimodal pipelines
  • Chat and summarization at scale
  • Cost-sensitive general assistants
  • Fast document and media understanding

Not ideal for

  • Unsupervised long-horizon coding agents
  • Frontier-hard reasoning problems
Capabilities

Capability profile

Normalized 0–100 scores, comparable across the whole catalog.

Reasoning83Coding78Math87Writing83Knowledge87Speed88Agentic75Vision89Multilingual87Long Context90
Reasoning
83
Coding
78
Math
87
Writing
83
Knowledge
87
Speed
88
Agentic
75
Vision
89
Multilingual
87
Long Context
90
Benchmarks

How it scores

Public benchmark results, with independent third-party results where available. Bars normalize percentages to 100 and Elo ratings to a 1500 ceiling.

Independent index
Artificial Analysis Intelligence Index
Composite of ~9–10 independent evals · Artificial Analysis
50/ 100
BenchmarkResult
Artificial Analysis Intelligence Indexindependent
GeneralArtificial Analysis
50%
SWE-bench Verifiedindependent
CodingSWE-bench
79.3%
GPQA Diamondindependent
ReasoningIndependent aggregators
82.8%
LiveBenchindependent
GeneralLiveBench
75%
DeepSWEindependent
CodingDatacurve
28%
Alternatives

Comparable models

Models in a roughly similar class — worth weighing against this one.

GPT-5.4 miniOpenAI

Affordable OpenAI workhorse for standard production routing.

Claude Haiku 4.5Anthropic

Fastest, cheapest Claude — snappy everyday tasks at scale.

Gemini 3.1 Flash-LiteGoogle DeepMind

Cheapest Gemini, optimized for low-latency high-volume traffic.