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Gemini 3.8 Flash vs o1

Gemini 3.8 Flash leads the LLM Stats Score 51.8 to 21.2. Gemini 3.8 Flash is 17.5x cheaper per token.

Google · OpenAI · Updated for 2026

Which is better?

Gemini 3.8 Flash leads the overall LLM Stats Score 51.8 to 21.2, ranking #11 overall.

On price, Gemini 3.8 Flash is roughly 17.5x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Gemini 3.8 Flash 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 3.8 Flash

  • overall performance matters — it scores 51.8 and ranks #11 on LLM Stats
  • your work emphasizes reasoning and coding — it leads those capability indexes
  • cost matters — it's about 17.5x cheaper per token
  • you process long inputs — it offers a 1,048,576 token context window
  • you want the most recent training data — it shipped Sep 2026

Choose o1

  • you want predictable pricing at $15.00/M input and $60.00/M output

At a glance

The differences that matter most.

Gemini 3.8 Flash
Google
o1
OpenAI
Core performance indexes
LLM Stats Score
51.8
#11
21.2
#180
Reasoning
47.6
#21
21.5
#169
Coding
41.3
#10
4.8
#195
Cost, coverage & limits
Benchmark wins
—
—
Input price
$0.75 / M
$15.00 / M
Output price
$3.75 / M
$60.00 / M
Context window
1,048,576
200,000

Capability indexes

Additional strengths measured across groups of related public benchmarks

3 shared
Index
Gemini 3.8 Flash
o1
Vision
34.4#11
13.0#94
Tool use
28.4#20
13.0#94
Multimodal
35.3#10
16.9#74
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

13 reported for Gemini 3.8 Flash · 19 for o1

No common benchmarks found

Gemini 3.8 Flash and o1don't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Human preference

Blind head-to-head votes and playground preference scores

Pricing Analysis

Price comparison per million tokens

Gemini 3.8 Flash costs less

For input processing, Gemini 3.8 Flash ($0.75/1M tokens) is 20.0x cheaper than o1 ($15.00/1M tokens).

For output processing, Gemini 3.8 Flash ($3.75/1M tokens) is 16.0x cheaper than o1 ($60.00/1M tokens).

In conclusion, o1 is more expensive than Gemini 3.8 Flash.*

* Using a 3:1 ratio of input to output tokens

Lowest available price from all providers
Wed Sep 02 2026 • llm-stats.com
Google
Gemini 3.8 Flash
Input tokens$0.75
Output tokens$3.75
Best providerGoogle
OpenAI
o1
Input tokens$15.00
Output tokens$60.00
Best providerAzure
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Gemini 3.8 Flash accepts 1,048,576 input tokens compared to o1's 200,000 tokens. o1 can generate longer responses up to 100,000 tokens, while Gemini 3.8 Flash is limited to 65,536 tokens.

Google
Gemini 3.8 Flash
Input1,048,576 tokens
Output65,536 tokens
OpenAI
o1
Input200,000 tokens
Output100,000 tokens
Wed Sep 02 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Gemini 3.8 Flash supports multimodal inputs, whereas o1 does not.

Gemini 3.8 Flash can handle both text and other forms of data like images, making it suitable for multimodal applications.

Gemini 3.8 Flash

Text
Images
Audio
Video

o1

Text
Images
Audio
Video

License

Usage and distribution terms

Both models are licensed under proprietary licenses.

Both models have usage restrictions defined by their respective organizations.

Gemini 3.8 Flash

Proprietary

Closed source

o1

Proprietary

Closed source

Release Timeline

When each model was launched

Gemini 3.8 Flash was released on 2026-09-02, while o1 was released on 2024-12-17.

Gemini 3.8 Flash is 21 months newer than o1.

Gemini 3.8 Flash

Sep 2, 2026

0 days ago

1.7yr newer
o1

Dec 17, 2024

1.7 years ago

Knowledge Cutoff

When training data ends

Gemini 3.8 Flash has a documented knowledge cutoff of 2026-03-31, while o1's cutoff date is not specified.

We can confirm Gemini 3.8 Flash's training data extends to 2026-03-31, but cannot make a direct comparison without o1's cutoff date.

Gemini 3.8 Flash

Mar 2026

o1

—

Provider Availability

Gemini 3.8 Flash is available from Google. o1 is available from Azure, OpenAI.

Gemini 3.8 Flash

google logo
Google
Input Price:Input: $0.75/1MOutput Price:Output: $3.75/1M

o1

azure logo
Azure
Input Price:Input: $15.00/1MOutput Price:Output: $60.00/1M
openai logo
OpenAI
Input Price:Input: $15.00/1MOutput Price:Output: $60.00/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Judge for yourself.

Run your own prompts against Gemini 3.8 Flash and o1 side-by-side, then vote on the output you prefer.

Gemini 3.8 Flash
✓ Preferred
o1
Open in Playground

FAQ

Common questions about Gemini 3.8 Flash vs o1.

Which is better, Gemini 3.8 Flash or o1?

Gemini 3.8 Flash leads the LLM Stats Score 51.8 to 21.2. Gemini 3.8 Flash is made by Google and o1 is made by OpenAI. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Gemini 3.8 Flash compare to o1 in benchmarks?

Gemini 3.8 Flash scores Terminal-Bench 2.1: 89.4%, LVBench: 87.1%, CharXiv-R: 86.2%, LABBench2: 86.2%, DeepSWE 1.1: 73.7%. o1 scores GSM8k: 97.1%, MATH: 96.4%, GPQA Physics: 92.8%, MMLU: 91.8%, MGSM: 89.3%.

Is Gemini 3.8 Flash cheaper than o1?

Gemini 3.8 Flash is 20.0x cheaper for input tokens. Gemini 3.8 Flash costs $0.75/M input and $3.75/M output via google. o1 costs $15.00/M input and $60.00/M output via azure.

What are the context window sizes for Gemini 3.8 Flash and o1?

Gemini 3.8 Flash supports 1.0M tokens and o1 supports 200K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Gemini 3.8 Flash and o1?

Key differences include LLM Stats Score (51.8 vs 21.2), context window (1.0M vs 200K), input pricing ($0.75 vs $15.00/M), multimodal support (yes vs no). See the full comparison above for benchmark-by-benchmark results.

Who makes Gemini 3.8 Flash and o1?

Gemini 3.8 Flash is developed by Google and o1 is developed by OpenAI.

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