Google · Model identity
Gemini 3.1 Pro Preview
Prompts over 200K tokens use long-context rates; Google publishes the same cache-read rate for Batch and Standard.
3pricing routes
What published route metadata supports
Audio inputCachingFile inputReasoningStructured outputTool useVideo inputVisionWeb search
Input modalities
AudioFilesImageTextVideo
Supported API parameters
include_reasoningmax_tokensreasoningreasoning_effortresponse_formatseedstopstructured_outputstemperaturetool_choicetoolstop_p
Only source-backed fields are filled
Release dateFeb 19, 2026
Knowledge cutoffNot independently verified
Open weightsNot independently verified
OpenRouter catalog date2026-02-19
First-party metadata verified Aug 26, 2026. Unfilled fields remain unknown. LLMPrice does not infer release dates, knowledge cutoffs, open-weight status, or licenses from a model name, repository link, or pricing route.
| Endpoint / route | Model ID | Input | Cached | Output | Context | Source |
|---|---|---|---|---|---|---|
| Direct APIStandard | gemini-3.1-pro-preview | $2 | $0.2 | $12 | 1.05M | Official provider ↗ |
| OpenRouterBatch | google/gemini-3.1-pro-preview:batch | $1 | — | $6 | 1.05M | OpenRouter API ↗ |
| OpenRouterStandard | google/gemini-3.1-pro-preview | $2 | $0.2 | $12 | 1.05M | OpenRouter API ↗ |
Tracking from today forward
No verified price changes have been recorded since tracking began on Aug 26, 2026. Today’s catalog is the baseline; LLMPrice does not invent or backfill older prices.
See all verified price changes →