Google: Gemini 3 Flash Preview

google/gemini-3-flash-preview · GoogleNot yet established
Declared family
Gemini
Evidence confidence
Unknown
Declared tokenizer tag
Gemini
Entered catalogue
17 December 2025
Last tested
Not yet measured
Measurement
Awaiting measurement

Evidence stack

Signals of different kinds, weighed together
SignalResultReference
Tokenizer signatureNot measured
API surfaceIdentical contract to 1 other entryapi_bf8baac5
Context and output1,048,576 context · 65,536 max outputdeclared
Reasoning contractOptional · efforts high, medium, low, minimal · default mediumdeclared
Serving providers observedNone recorded yet

Declared record

What the catalogue claims about this model

Gemini 3 Flash Preview is a high speed, high value thinking model designed for agentic workflows, multi turn chat, and coding assistance. It delivers near Pro level reasoning and tool...

Modalities
text+image+file+audio+video->text
Declared tokenizer
Gemini
Prompt price
$0.50 / M tokens
Completion price
$3.00 / M tokens

Supported parameters

include_reasoningmax_tokensreasoningreasoning_effortresponse_formatseedstopstructured_outputstemperaturetool_choicetoolstop_p

defaults: {"temperature":null,"top_p":null,"top_k":null,"frequency_penalty":null,"presence_penalty":null,"repetition_penalty":null}

Catalogue entry

History

Every observation, kept as taken
  • 17 December 2025Enters the OpenRouter catalogue declared as Gemini.

Cite this page as the evidence record for Google: Gemini 3 Flash Preview: the URL is stable, measurements are dated, and revisions append to the history above. Method: tokenizer fingerprinting, v1, 50 strings. The raw data behind every figure is on the data page.