Best for coding
Insufficient dataEvidence
comparable_coding_benchmark_missingNo same-source coding benchmark is attached to both model versions.
MODEL COMPARE
VerifiedGemini 3.1 Pro Preview Custom Tools vs Gemini 3.5 Flash Lite: Pricing, Capabilities and Benchmarks
Compare Gemini 3.1 Pro Preview Custom Tools and Gemini 3.5 Flash Lite across context window, API pricing, modalities, tool use and recommended use cases.
DECISION SUMMARY
Decision summary
Recommendations are conditional. Unknown values never count as a loss, and missing comparable benchmarks produce no winner.
Best for agents
Insufficient dataEvidence
comparable_agent_benchmark_missingCapabilities are listed, but a comparable agent benchmark is missing.
Long context
TieEvidence
context_window_largerGemini 3.1 Pro Preview Custom Tools=1048576; Gemini 3.5 Flash Lite=1048576
Lower monthly token cost
Gemini 3.5 Flash LiteEvidence
same_provider_monthly_cost_lowerGemini 3.1 Pro Preview Custom Tools=4.4; Gemini 3.5 Flash Lite=0.8; input=1000000; cached_input=0; output=200000; provider=OpenRouter
Open deployment
Insufficient dataEvidence
open_weights_supportGemini 3.1 Pro Preview Custom Tools=unknown; Gemini 3.5 Flash Lite=unknown
| Attribute | Gemini 3.1 Pro Preview Custom Tools | Gemini 3.5 Flash Lite | Winner |
|---|---|---|---|
Context windowcontext_window_largerProvider endpoint | 1.05M | 1.05M | Tie |
Maximum outputmax_output_largerProvider endpoint | 66K | 66K | Tie |
Input modalitiesinput_modalities_differProvider endpoint | Text, Audio, Image, Video, File | Text, Image, Video, File, Audio | Insufficient data |
Output modalitiesoutput_modalities_differProvider endpoint | Text | Text | Insufficient data |
Tool callingtool_calling_supportProvider endpoint | Supported | Supported | Tie |
Structured outputstructured_output_supportProvider endpoint | Supported | Supported | Tie |
Reasoningreasoning_supportModel | Supported | Supported | Insufficient data |
Open weightsopen_weights_supportModel | Unknown | Unknown | Insufficient data |
Input price per 1M tokensinput_price_lowerProvider endpoint | $2 | $0.30 | Gemini 3.5 Flash Lite |
Output price per 1M tokensoutput_price_lowerProvider endpoint | $12 | $2.5 | Gemini 3.5 Flash Lite |
USAGE ESTIMATOR
Monthly cost calculator
Estimate token charges for the selected provider endpoints. Image, audio, request and web-search charges are not included.
This is a provider snapshot, not a quote. Confirm production pricing before use.