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o4 Mini Deep Research Pricing

Reasoning

OpenAI · 200K tokens context

o4 Mini Deep Research from OpenAI costs $2.00 per 1 million input tokens and $8.00 per 1 million output tokens as of June 2026 (live OpenRouter data). The model supports a 200,000-token context window (approximately 150,000 words) with a 100K-token maximum output. A typical 1,000-token request costs $0.0020 in input charges; a 10,000-token request costs $0.0200.

o4 Mini Deep Research pricing and capability summary
Input price$2.00 / 1M tokens
Output price$8.00 / 1M tokens
Output / input ratio4.0×
Context window200,000 tokens (~150,000 words)
Maximum output100,000 tokens
Cost per 1K tokens (input)$0.0020
TierReasoning
Last verified

o4-mini-deep-research is OpenAI's faster, more affordable deep research model—ideal for tackling complex, multi-step research tasks. Note: This model always uses the 'web_search' tool which adds additional cost.

Live pricing from OpenRouter

Input Price

$2.00

per 1 million tokens

Output Price

$8.00

per 1 million tokens

Context Window

200K tokens

max 100K output

Cost Examples

Request TypeTokensInput CostOutput Cost
1,000 word article1,333$0.00267$0.0032
10-page document (2,500 words)3,333$0.00667$0.008
1,000 lines of code5,000$0.01$0.012
100K token document100,000$0.20$0.24

Output cost estimated at 30% of input token count. Use the calculator for exact figures.

Strengths

  • Large 200K-token context window
  • Step-by-step chain-of-thought reasoning
  • Multimodal: understands images as well as text

Limitations

  • Higher latency; reasoning tokens add to output cost
  • Quality and availability can vary by hosting provider

Best Use Cases

Math and science problems
Complex code generation and debugging
Multi-step logical analysis
Research assistance

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o4 Mini Deep Research — FAQ

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