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GPT-4o vs o4-mini Deep Research

GPT-4o vs o4-mini Deep Research: o4-mini Deep Research is cheaper for input-heavy usage ($2.00/M vs $2.50/M input tokens), while o4-mini Deep Research is better for long-context tasks (200,000 tokens).

Direct answer: choose o4-mini Deep Research for lower token spend and choose o4-mini Deep Research when your workload needs longer context.

Compare input and output token pricing, context windows, and monthly cost estimates on one page so you can pick the cheaper model fast.

OpenAI
GPT-4o
vs
OpenAI
o4-mini Deep Research

Cost Comparison (1000 input + 500 output tokens, 100 requests/day)

GPT-4o

Per Request:$0.007500
Daily:$0.75
Monthly:$22.50
Yearly:$273.75

o4-mini Deep Research

Per Request:$0.006000
Daily:$0.60
Monthly:$18.00
Yearly:$219.00

Cost Differences

$0.001500
Per Request
$0.15
Daily
$4.50
Monthly
$54.75
Yearly

o4-mini Deep Research costs less than GPT-4o

Quick Recommendation

Winner for direct API pricing: o4-mini Deep Research. At the default workload, o4-mini Deep Research saves about $4.50/month ($54.75/year) versus GPT-4o.

Feature Comparison

FeatureGPT-4oo4-mini Deep Research
ProviderOpenAIOpenAI
Input Price$2.50/1M tokens$2.00/1M tokens
Output Price$10.00/1M tokens$8.00/1M tokens
Context Window128,000 tokens200,000 tokens
Max Output16,384 tokens32,768 tokens
Categoryflagshipreasoning
Capabilities
textvisionaudio
textreasoningcode
Release Date5/13/20246/26/2025

GPT-4o vs o4-mini Deep Research: Which Should You Choose?

Choosing between GPT-4o and o4-mini Deep Research depends on your priorities: cost efficiency, context length, or raw capability. o4-mini Deep Research is the more affordable option at $2.00/1M input tokens20% cheaper than GPT-4o. Meanwhile, o4-mini Deep Research offers a significantly larger context window at 200,000 tokens vs 128,000 for GPT-4o.

These models target different tiers: GPT-4o is a flagship model while o4-mini Deep Research is reasoning. This means they're optimized for different workloads. GPT-4o is built for complex tasks that require deeper reasoning, while o4-mini Deep Research offers better value for routine operations.

Output costs matter too. GPT-4o charges $10.00/1M output tokens vs $8.00 for o4-mini Deep Research. For generation-heavy workloads (content creation, code generation, summarization), output pricing often dominates your bill. o4-mini Deep Research has the edge here at $8.00/1M output tokens.

Multimodal capabilities: GPT-4o supports vision (image inputs) while o4-mini Deep Research is text-only. If your application needs image understanding, this narrows your choice.

Best Use Cases

Choose GPT-4o when:

  • • You're already using OpenAI's API ecosystem

Choose o4-mini Deep Research when:

  • • Budget is a primary concern
  • • You need a larger context window (200,000 tokens)
  • • You need longer outputs (up to 32,768 tokens)
  • • You're already using OpenAI's API ecosystem

Pros and Caveats at a Glance

GPT-4o

  • Input pricing: $2.50/M tokens
  • Output pricing: $10.00/M tokens
  • Context window: 128,000 tokens
  • Max output: 16,384 tokens

Watch out for

  • Higher input cost than o4-mini Deep Research
  • Higher output cost than o4-mini Deep Research
  • Smaller context window than o4-mini Deep Research

o4-mini Deep Research

  • Input pricing: $2.00/M tokens
  • Output pricing: $8.00/M tokens
  • Context window: 200,000 tokens
  • Max output: 32,768 tokens

Watch out for

  • Trade-offs are minor in this matchup.

Try Different Scenarios

Use the calculator below to see how costs change with different usage patterns

GPT-4o (OpenAI)

o4-mini Deep Research (OpenAI)

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Start using o4-mini Deep Research today

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Frequently Asked Questions

Which is cheaper, GPT-4o or o4-mini Deep Research?
o4-mini Deep Research is cheaper for input tokens at $2.00 per million tokens vs $2.50 for GPT-4o — that's 20% savings on input costs.
What is the context window difference between GPT-4o and o4-mini Deep Research?
GPT-4o supports 128,000 tokens while o4-mini Deep Research supports 200,000 tokens — a difference of 72,000 tokens in favor of o4-mini Deep Research.
Which model is better for AI Chatbot?
Both models support text. For ai chatbot, o4-mini Deep Research is the lower-cost option, while o4-mini Deep Research offers a larger context window (200,000 vs 128,000 tokens). Choose o4-mini Deep Research for budget sensitivity or o4-mini Deep Research for longer context tasks.
Which model has better overall pricing for heavy usage?
At 100 requests/day with 1,000 input and 500 output tokens each, GPT-4o costs about $22.50/month and o4-mini Deep Research costs about $18.00/month. Overall, o4-mini Deep Research has lower combined input + output rates ($2.00 in, $8.00 out) vs GPT-4o.

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