CatalogGoogle
Gemini 3.5 Pro
gemini-3.5-pro-preview
—Index
ClosedNot generally available1M contextTextImageAudioVideo
Not generally available
Listed so you do not plan a stack around a rumor. Use a public Gemini Flash model instead.
Pick this when
Nothing you can buy today. Listed so you do not plan a stack around a rumor.
Skip when
Always, until it is generally available.
Announced early, then delayed through the summer. Do not design production around it. 3.7 Flash is the public Gemini to use.
Price
- Input / 1M
- $1.50
- Output / 1M
- $12
- Measured task
- —
Partner preview. Google has not given a GA date.
Shape
- Context
- 1M
- Max output
- 64K
- Released
- 2026-02
- Tools
- Yes
- Reasoning
- Yes
Scores
Intelligence index—
GPQA Diamond—
Terminal-Bench 2.1—
Agentic index—
- Arena
- —
- Speed
- —
- GPQA
- —
- Term.
- —
- AA Index. The single number most people mean by “how smart.” It is a blend, so a specialist can lose here and still win the job you care about.
- GPQA. A clean test of hard reasoning. PhD experts sit around 65%. It says little about writing, tools, or taste.
- Term.. Closest public proxy for coding agents that live in a terminal. A high index score with a weak terminal score is a warning.
- Arena. Captures taste and usefulness that unit tests miss. Sample size varies by model, so treat gaps under ~100 Elo as noise.
Google · Mountain View. Gemini is natively multimodal. 3.7 Flash is the current pick for mixed media and long documents. 3.5 Pro is still slipping.