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Gemini 3.7 Flash vs o3

Gemini 3.7 Flash significantly outperforms across most benchmarks. Gemini 3.7 Flash is 2.3x cheaper per token.

Google · OpenAI · Updated for 2026

Which is better?

Gemini 3.7 Flash outperforms in 1 benchmarks (CharXiv-R), while o3 is better at 0 benchmarks. Gemini 3.7 Flash significantly outperforms across most benchmarks.

On price, Gemini 3.7 Flash is roughly 2.3x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Gemini 3.7 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 benchmark, pricing, and model metadata for 2026.

Choose Gemini 3.7 Flash

  • you want the strongest raw capability — it leads on 1 of 1 shared benchmarks
  • cost matters — it's about 2.3x 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 Aug 2026

Choose o3

  • you want predictable pricing at $2.00/M input and $8.00/M output

At a glance

The differences that matter most.

Gemini 3.7 Flash
Google
o3
OpenAI
Benchmark wins
1 of 1
0 of 1
Input price
$0.75 / M
$2.00 / M
Output price
$3.75 / M
$8.00 / M
Context window
1,048,576
200,000
Released
Aug 2026
Apr 2025
License
Proprietary
Proprietary

Performance Benchmarks

Comparative analysis across standard metrics

1 benchmarks

Gemini 3.7 Flash outperforms in 1 benchmarks (CharXiv-R), while o3 is better at 0 benchmarks.

Gemini 3.7 Flash significantly outperforms across most benchmarks.

Mon Aug 24 2026 • llm-stats.com

Arena Performance

Playground indexes and blind preference scores

Pricing Analysis

Price comparison per million tokens

Gemini 3.7 Flash costs less

For input processing, Gemini 3.7 Flash ($0.75/1M tokens) is 2.7x cheaper than o3 ($2.00/1M tokens).

For output processing, Gemini 3.7 Flash ($3.75/1M tokens) is 2.1x cheaper than o3 ($8.00/1M tokens).

In conclusion, o3 is more expensive than Gemini 3.7 Flash.*

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

Lowest available price from all providers
Mon Aug 24 2026 • llm-stats.com
Google
Gemini 3.7 Flash
Input tokens$0.75
Output tokens$3.75
Best providerGoogle
OpenAI
o3
Input tokens$2.00
Output tokens$8.00
Best providerOpenAI
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Gemini 3.7 Flash accepts 1,048,576 input tokens compared to o3's 200,000 tokens. o3 can generate longer responses up to 100,000 tokens, while Gemini 3.7 Flash is limited to 65,536 tokens.

Google
Gemini 3.7 Flash
Input1,048,576 tokens
Output65,536 tokens
OpenAI
o3
Input200,000 tokens
Output100,000 tokens
Mon Aug 24 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Gemini 3.7 Flash and o3 support multimodal inputs.

They are both capable of processing various types of data, offering versatility in application.

Gemini 3.7 Flash

Text
Images
Audio
Video

o3

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 3.7 Flash

Proprietary

Closed source

o3

Proprietary

Closed source

Release Timeline

When each model was launched

Gemini 3.7 Flash was released on 2026-08-13, while o3 was released on 2025-04-16.

Gemini 3.7 Flash is 16 months newer than o3.

Gemini 3.7 Flash

Aug 13, 2026

1 weeks ago

1.3yr newer
o3

Apr 16, 2025

1.4 years ago

Knowledge Cutoff

When training data ends

Gemini 3.7 Flash has a knowledge cutoff of 2026-03-31, while o3 has a cutoff of 2024-05-31.

Gemini 3.7 Flash has more recent training data (up to 2026-03-31), making it potentially better informed about events through that date compared to o3 (2024-05-31).

Gemini 3.7 Flash

Mar 2026

1.8 yr newer
o3

May 2024

Provider Availability

Gemini 3.7 Flash is available from Google. o3 is available from OpenAI.

Gemini 3.7 Flash

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

o3

openai logo
OpenAI
Input Price:Input: $2.00/1MOutput Price:Output: $8.00/1M
* 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 3.7 Flash and o3 side-by-side, then vote on the output you prefer.

Gemini 3.7 Flash
✓ Preferred
o3
Open in Playground

FAQ

Common questions about Gemini 3.7 Flash vs o3.

Which is better, Gemini 3.7 Flash or o3?

Gemini 3.7 Flash significantly outperforms across most benchmarks. Gemini 3.7 Flash is made by Google and o3 is made by OpenAI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Gemini 3.7 Flash compare to o3 in benchmarks?

Gemini 3.7 Flash scores MRCR v2 (8-needle): 97.0%, Harvey LAB-AA: 90.7%, CharXiv-R: 88.7%, Terminal-Bench 2.1: 85.8%, LVBench: 85.4%. o3 scores COLLIE: 98.4%, AIME 2024: 91.6%, ARC-AGI: 88.0%, MathVista: 86.8%, AIME 2025: 86.4%.

Is Gemini 3.7 Flash cheaper than o3?

Gemini 3.7 Flash is 2.7x cheaper for input tokens. Gemini 3.7 Flash costs $0.75/M input and $3.75/M output via google. o3 costs $2.00/M input and $8.00/M output via openai.

What are the context window sizes for Gemini 3.7 Flash and o3?

Gemini 3.7 Flash supports 1.0M tokens and o3 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 3.7 Flash and o3?

Key differences include context window (1.0M vs 200K), input pricing ($0.75 vs $2.00/M). See the full comparison above for benchmark-by-benchmark results.

Who makes Gemini 3.7 Flash and o3?

Gemini 3.7 Flash is developed by Google and o3 is developed by OpenAI.

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