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o1 vs DeepSeek V4.1 Flash 1017

At a glance

OpenAI's original frontier reasoning model with deep thinking.

75200K ctx$15.00/$60.00 per M#42/92

DeepSeek's October 2026 checkpoint of the V4.1 Flash workhorse, refreshed for stronger agentic coding with shorter, faster answers.

1.0M ctx$0.15/$0.60 per M
Demos
All demos

No shared demos for these models yet.

AI Output
All AI outputs

No captured outputs for these models yet.

Benchmarks
See rankings
Reasoning
CodingInsufficient data
AgenticInsufficient data
Sources:Epoch ECI·Epoch AI·OpenRouter· as of 2026-10-02
Capability
CapabilityECI75.2
Reasoning & Knowledge
Graduate Science76.8%Factual Recall41.1%
Math
Math Problems94.7%Competition Math73.3%Research Math9.3%
Coding
Code Editing61.7%
Agentic
Task Horizon39min
Reasoning
CodingInsufficient data
AgenticInsufficient data
ReasoningInsufficient data
MathInsufficient data
Sources:OpenRouter
Cheaper99%
Capability
Capability—
Reasoning & Knowledge
Graduate Science—Factual Recall—
Math
Math Problems—Competition Math—Research Math—
Coding
Code Editing—
Agentic
Task Horizon—
Specs
200K
Context
100K
Max output
Dec 2024
Released
1.0M
Context
256K
Max output
Oct 2026
Released
Capabilities
Vision
Audio
Reasoning
Vision
Audio
Reasoning
Pricing
Live pricing, shown before you run
Input$15.00/M tokens
Output$60.00/M tokens
Cache read$7.50/M tokens
Web search$0.01/search
Live pricing, shown before you run
Input99%$0.15/M tokens
Output99%$0.60/M tokens
Cache read100%$0.003/M tokens
Chat with o1Go to model
Chat with DeepSeek V4.1 Flash 1017Go to model
Frequently Asked Questions: o1 vs DeepSeek V4.1 Flash 1017▼

Which is better, o1 or DeepSeek V4.1 Flash 1017?

▼

Both o1 and DeepSeek V4.1 Flash 1017 are capable AI models. The best choice depends on your specific use case: consider pricing, context window, speed, and which capabilities (vision, reasoning, audio) you need.

Which is cheaper, o1 or DeepSeek V4.1 Flash 1017?

▼

DeepSeek V4.1 Flash 1017 has a lower blended cost. o1: $15.00 input / $60.00 output. DeepSeek V4.1 Flash 1017: $0.15 input / $0.60 output.

Which has a larger context window, o1 or DeepSeek V4.1 Flash 1017?

▼

DeepSeek V4.1 Flash 1017 has a larger context window: o1 supports 200K tokens vs DeepSeek V4.1 Flash 1017 at 1M tokens.

Do both o1 and DeepSeek V4.1 Flash 1017 support vision?

▼

Yes, both o1 and DeepSeek V4.1 Flash 1017 support vision/image input.

What are the key differences between o1 and DeepSeek V4.1 Flash 1017?

▼

Key differences: DeepSeek V4.1 Flash 1017 is significantly cheaper. Compare full specs on this page.

Which model should I choose for my use case?

▼

If cost is your priority, choose the cheaper option. If you need the highest intelligence for complex tasks, pick the higher-scoring model. For long documents or codebases, choose the larger context window. You can try both o1 and DeepSeek V4.1 Flash 1017 for free on idapt.app to see which performs better for your specific needs.

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