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o3-mini (High) vs DeepSeek V4 Flash

At a glance

o3-mini with reasoning effort set to high for maximum STEM accuracy.

74200K ctx$1.10/$4.40 per M#45/92

Efficiency-optimized DeepSeek V4 at 284B total / 13B active for fast, high-throughput inference.

1.0M ctx$0.09/$0.19 per M
Agent Demos
All agent demos

No shared agent 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 2026-07-10
Capability
CapabilityECI73.9
Reasoning & Knowledge
Graduate Science77.0%
Math
Math Problems96.5%Competition Math76.9%Research Math12.4%
Coding
Code Editing60.4%
Agentic
Novel Reasoning3.0%
No benchmarks available

This model hasn't been benchmarked yet.

Specs
200K
Context
100K
Max output
Feb 2025
Released
1.0M
Context
16K
Max output
Apr 2026
Released
Capabilities
Vision
Audio
Reasoning
Vision
Audio
Reasoning
Pricing
Live pricing, shown before you run
Input$1.10/M tokens
Output$4.40/M tokens
Cache read$0.55/M tokens
Web search$0.01/search
Live pricing, shown before you run
Input91%$0.09/M tokens
Output96%$0.19/M tokens
Cache read97%$0.02/M tokens
Chat with o3-mini (High)Go to model
Chat with DeepSeek V4 FlashGo to model
Frequently Asked Questions: o3-mini (High) vs DeepSeek V4 Flash▼

Which is better, o3-mini (High) or DeepSeek V4 Flash?

▼

Both o3-mini (High) and DeepSeek V4 Flash 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, o3-mini (High) or DeepSeek V4 Flash?

▼

DeepSeek V4 Flash has a lower blended cost. o3-mini (High): $1.10 input / $4.40 output. DeepSeek V4 Flash: $0.09 input / $0.19 output.

Which has a larger context window, o3-mini (High) or DeepSeek V4 Flash?

▼

DeepSeek V4 Flash has a larger context window: o3-mini (High) supports 200K tokens vs DeepSeek V4 Flash at 1M tokens.

What are the key differences between o3-mini (High) and DeepSeek V4 Flash?

▼

Key differences: DeepSeek V4 Flash 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 o3-mini (High) and DeepSeek V4 Flash for free on idapt.app to see which performs better for your specific needs.

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