Google Releases Gemini 3.1 Pro Models

On 19 February 2026 Google announces Gemini 3.1 Pro, introducing two preview model IDs (gemini-3.1-pro-preview and gemini-3.1-pro-preview-customtools) and tiered pricing: $2/$12 per million tokens under 200,000 and $4/$18 for 200,000–1,000,000 tokens. Google highlights improved SVG animation performance versus Gemini 3 Pro, but users report severe launch-day latency, timeouts, and high-demand errors affecting reliability.
Scoring Rationale
Major Gemini model release with clear pricing and capabilities; score trimmed due to anecdotal, limited launch-day performance reporting.
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Sources
- Read OriginalGemini 3.1 Prosimonwillison.net



