Gemini 1.5 Flash 8B vs o1-preview
o1-preview leads the LLM Stats Score 17.0 to -0.2. Gemini 1.5 Flash 8B is 205.9x cheaper per token.
Google · OpenAI · Updated for 2026
Which is better?
o1-preview leads the overall LLM Stats Score 17.0 to -0.2, ranking #199 overall.
In the 2 individual benchmarks reported for both models, o1-preview wins 2; this is a narrower head-to-head signal than the composite indexes.
On price, Gemini 1.5 Flash 8B is roughly 205.9x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
Gemini 1.5 Flash 8B also accepts a larger context window (1,048,576 input tokens), making it the stronger choice for long documents and large codebases.
Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.
Choose Gemini 1.5 Flash 8B
- cost matters — it's about 205.9x cheaper per token
- you process long inputs — it offers a 1,048,576 token context window
Choose o1-preview
- overall performance matters — it scores 17.0 and ranks #199 on LLM Stats
- your work emphasizes reasoning — it leads those capability indexes
- you value its reported benchmark strengths — it wins 2 of 2 exact shared results
- you want the most recent training data — it shipped Sep 2024
At a glance
The differences that matter most.
Capability indexes
Additional strengths measured across groups of related public benchmarks
Individual benchmarks
13 reported for Gemini 1.5 Flash 8B · 8 for o1-preview
Gemini 1.5 Flash 8B outperforms in 0 benchmarks, while o1-preview is better at 2 benchmarks (GPQA, MATH).
o1-preview 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 8B ($0.07/1M tokens) is 214.3x cheaper than o1-preview ($15.00/1M tokens).
For output processing, Gemini 1.5 Flash 8B ($0.30/1M tokens) is 200.0x cheaper than o1-preview ($60.00/1M tokens).
In conclusion, o1-preview 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
Gemini 1.5 Flash 8B accepts 1,048,576 input tokens compared to o1-preview's 128,000 tokens. o1-preview can generate longer responses up to 32,768 tokens, while Gemini 1.5 Flash 8B is limited to 8,192 tokens.
Input capabilities
Documented input modalities across available providers
Gemini 1.5 Flash 8B supports multimodal inputs, whereas o1-preview does not.
Gemini 1.5 Flash 8B can handle both text and other forms of data like images, making it suitable for multimodal applications.
Gemini 1.5 Flash 8B
o1-preview
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 8B was released on 2024-03-15, while o1-preview was released on 2024-09-12.
o1-preview is 6 months newer than Gemini 1.5 Flash 8B.
Mar 15, 2024
2.5 years ago
Sep 12, 2024
2.0 years ago
6mo newerKnowledge Cutoff
When training data ends
Gemini 1.5 Flash 8B has a documented knowledge cutoff of 2024-10-01, while o1-preview's cutoff date is not specified.
We can confirm Gemini 1.5 Flash 8B's training data extends to 2024-10-01, but cannot make a direct comparison without o1-preview's cutoff date.
Oct 2024
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Provider Availability
Gemini 1.5 Flash 8B is available from Google. o1-preview is available from OpenAI, Azure.
Gemini 1.5 Flash 8B
o1-preview
Outputs Comparison
Judge for yourself.
Run your own prompts against Gemini 1.5 Flash 8B and o1-preview side-by-side, then vote on the output you prefer.
FAQ
Common questions about Gemini 1.5 Flash 8B vs o1-preview.