Battle of the Models

Compare specific LLM models, context windows, and capabilities.

Gemini 1.5 Flash

DEPRECATED

Google AI Studio

This model is no longer active/free — kept for reference.

Intelligence Score 85/100

Model Popularity 0 votes

Context Window 1M Context, 15 RPM

Pricing Model Free / Open

View Provider Analysis →

S-TIER

Google

Intelligence Score 94/100

Context Window 2M

Pricing Model Commercial / Paid

Model Popularity 0 votes

Commercial/Paid Model

FINAL VERDICT

With an intelligence score of 94/100 vs 85/100, Gemini 2.5 Pro outperforms Gemini 1.5 Flash by 9 points.

HEAD-TO-HEAD

Feature	Gemini 1.5 Flash	Gemini 2.5 Pro
Context Window	1M Context, 15 RPM	2M
Architecture	Transformer (Proprietary)	Transformer (Proprietary)
Est. MMLU Score	~80-84%	~88-91%
Release Date	Feb-May 2024	2024
Pricing Model	Free Tier	Paid / Commercial
Rate Limit (RPM)	Varies by model (per-model limits are now shown only inside AI Studio)	2,000 RPM
Daily Limit	Varies by model. Free: Flash, Flash-Lite and Gemini 2.5 Pro; Gemini 3.x Pro models are paid	1,500 requests/day (free tier)
Capabilities	Multimodal	Vision Function Calling Streaming JSON Mode
Performance Tier	A-Tier (Excellent)	S-Tier (Elite)
Speed Estimate	⚡ Very Fast	⚡ Very Fast
Primary Use Case	⚡ Fast Chat & Apps	⚡ Fast Chat & Apps
Model Size	~1.5T (estimated)	~1.5T (estimated)
Limitations	Data used for training (Unpaid tier) Rate limits are enforced per minute/day No SLA for free tier	API key required Rate limits vary by region
Key Strengths	Multimodal Capabilities Huge Context Window (up to 2M tokens) Fast Inference Speed	Deep reasoning Coding capabilities Long context mastery