Gemini 1.5 Flash vs Gemini 1.5 Flash 8B
Gemini 1.5 Flash leads the LLM Stats Score 6.2 to -0.6. Gemini 1.5 Flash 8B is 2.1x cheaper per token.
Google · Google · Updated for 2026
Which is better?
Gemini 1.5 Flash leads the overall LLM Stats Score 6.2 to -0.6, ranking #277 overall.
In the 13 individual benchmarks reported for both models, Gemini 1.5 Flash wins 13; this is a narrower head-to-head signal than the composite indexes.
On price, Gemini 1.5 Flash 8B is roughly 2.1x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.
Choose Gemini 1.5 Flash
- overall performance matters — it scores 6.2 and ranks #277 on LLM Stats
- you value its reported benchmark strengths — it wins 13 of 13 exact shared results
- you want the most recent training data — it shipped May 2024
Choose Gemini 1.5 Flash 8B
- cost matters — it's about 2.1x cheaper per token
At a glance
The differences that matter most.
Capability indexes
Additional strengths measured across groups of related public benchmarks
Individual benchmarks
22 reported for Gemini 1.5 Flash · 13 for Gemini 1.5 Flash 8B
Gemini 1.5 Flash outperforms in 13 benchmarks (FLEURS, GPQA, HiddenMath, MATH, MathVista, MMLU-Pro, MMMU, MRCR, Natural2Code, Vibe-Eval, Video-MME, WMT23, XSTest), while Gemini 1.5 Flash 8B is better at 0 benchmarks.
Gemini 1.5 Flash significantly outperforms across most benchmarks.
Human preference
Blind head-to-head votes and playground preference scores
Pricing Analysis
Price comparison per million tokens
For input processing, Gemini 1.5 Flash ($0.15/1M tokens) is 2.1x more expensive than Gemini 1.5 Flash 8B ($0.07/1M tokens).
For output processing, Gemini 1.5 Flash ($0.60/1M tokens) is 2.0x more expensive than Gemini 1.5 Flash 8B ($0.30/1M tokens).
In conclusion, Gemini 1.5 Flash is more expensive than Gemini 1.5 Flash 8B.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
Both models have the same input context window of 1,048,576 tokens. Both models can generate responses up to 8,192 tokens.
Input capabilities
Documented input modalities across available providers
Both Gemini 1.5 Flash and Gemini 1.5 Flash 8B support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
Gemini 1.5 Flash
Gemini 1.5 Flash 8B
License
Usage and distribution terms
Both models are licensed under proprietary licenses.
Both models have usage restrictions defined by their respective organizations.
Proprietary
Closed source
Proprietary
Closed source
Release Timeline
When each model was launched
Gemini 1.5 Flash was released on 2024-05-01, while Gemini 1.5 Flash 8B was released on 2024-03-15.
Gemini 1.5 Flash is 2 months newer than Gemini 1.5 Flash 8B.
May 1, 2024
2.3 years ago
1mo newerMar 15, 2024
2.5 years ago
Knowledge Cutoff
When training data ends
Gemini 1.5 Flash has a knowledge cutoff of 2023-11-01, while Gemini 1.5 Flash 8B has a cutoff of 2024-10-01.
Gemini 1.5 Flash 8B has more recent training data (up to 2024-10-01), making it potentially better informed about events through that date compared to Gemini 1.5 Flash (2023-11-01).
Nov 2023
Oct 2024
11 mo newerProvider Availability
Gemini 1.5 Flash is available from Google. Gemini 1.5 Flash 8B is available from Google.
Gemini 1.5 Flash
Gemini 1.5 Flash 8B
Outputs Comparison
Judge for yourself.
Run your own prompts against Gemini 1.5 Flash and Gemini 1.5 Flash 8B side-by-side, then vote on the output you prefer.
FAQ
Common questions about Gemini 1.5 Flash vs Gemini 1.5 Flash 8B.