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Instability and latency spikes during model updates

8/10 High

When Google rolls out new model versions, previously stable models like Gemini 1.5 Pro and 2.0 Flash experience intermittent failures and massive latency spikes (milliseconds to 15+ seconds), with issues persisting for days. Function-calling feature has intermittently failed for 3+ day periods.

Gemini APIGemini 2.5 ProGemini 2.0 FlashGemini 1.5 Pro
Category
compatibility
Workaround
none
Stage
deploy
Freshness
worsening
Scope
single_lib
Upstream
open
Recurring
Yes
Buyer Type
team
Maintainer
slow

Sources

Collection History

Query: “What are the most common pain points with Gemini API for developers in 2025?”3/30/2026

One of the biggest complaints I've seen over & over again is the sheer instability of the Gemini API, especially when Google rolls out new models... massive latency spikes, with response times jumping from milliseconds to over 15 seconds for the exact same input.

Created: 3/30/2026Updated: 3/30/2026