Gemini Omni 1.1 Flash vs o4-mini

Pricing verdict: Gemini Omni 1.1 Flash vs o4-mini: o4-mini is cheaper for input-heavy usage ($1.10/M vs $1.50/M input tokens), while o4-mini is better for long-context tasks (2,000,000 tokens).

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

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

Google

Gemini Omni 1.1 Flash

OpenAI

o4-mini

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Gemini Omni 1.1 Flash pricing page o4-mini pricing page Google provider overview OpenAI provider overview

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

Gemini Omni 1.1 Flash

Per Request:$0.01025

Daily:$1.025

Monthly:$30.75

Yearly:$374.125

o4-mini

Per Request:$0.003300

Daily:$0.33

Monthly:$9.90

Yearly:$120.45

Cost Differences

$0.006950

Per Request

$0.695

Daily

$20.85

Monthly

$253.675

Yearly

o4-mini costs less than Gemini Omni 1.1 Flash

Quick Recommendation

Winner for direct API pricing: o4-mini. At the default workload, o4-mini saves about $20.85/month ($253.675/year) versus Gemini Omni 1.1 Flash.

Gemini Omni 1.1 Flash full pricing breakdown o4-mini full pricing breakdown Google API pricing details OpenAI API pricing details Google vs OpenAI API pricing GPT-6 Astra vs Codex Mini GPT-6 Astra vs o4-mini Deep Research

Feature Comparison

Feature	Gemini Omni 1.1 Flash	o4-mini
Provider	Google	OpenAI
Input Price	$1.50/1M tokens	$1.10/1M tokens
Output Price	$17.50/1M tokens	$4.40/1M tokens
Context Window	1,048,576 tokens	2,000,000 tokens
Max Output	57,920 tokens	131,072 tokens
Category	flagship	reasoning
Capabilities	textvisionaudiovideo	textreasoningcode
Release Date	8/27/2026	4/16/2025

Gemini Omni 1.1 Flash vs o4-mini: Which Should You Choose?

Choosing between Gemini Omni 1.1 Flash and o4-mini depends on your priorities: cost efficiency, context length, or raw capability. o4-mini is the more affordable option at $1.10/1M input tokens — 27% cheaper than Gemini Omni 1.1 Flash. Meanwhile, o4-mini offers a significantly larger context window at 2,000,000 tokens vs 1,048,576 for Gemini Omni 1.1 Flash.

These models come from different providers — Google and OpenAI — which means different API ecosystems, SDKs, rate limits, and terms of service. If you're already integrated with Google, switching to OpenAIinvolves migration effort beyond just pricing. Factor in your existing infrastructure when deciding.

These models target different tiers: Gemini Omni 1.1 Flash is a flagship model while o4-mini is reasoning. This means they're optimized for different workloads. Gemini Omni 1.1 Flash is built for complex tasks that require deeper reasoning, while o4-mini offers better value for routine operations.

Output costs matter too. Gemini Omni 1.1 Flash charges $17.50/1M output tokens vs $4.40 for o4-mini. For generation-heavy workloads (content creation, code generation, summarization), output pricing often dominates your bill. o4-mini has the edge here at $4.40/1M output tokens.

Multimodal capabilities: Gemini Omni 1.1 Flash supports vision (image inputs) while o4-mini is text-only. If your application needs image understanding, this narrows your choice.

Best Use Cases

Choose Gemini Omni 1.1 Flash when:

• You need more capabilities (vision, audio, video)
• You're already using Google's API ecosystem

Choose o4-mini when:

• Budget is a primary concern
• You need a larger context window (2,000,000 tokens)
• You need longer outputs (up to 131,072 tokens)
• You're already using OpenAI's API ecosystem

Pros and Caveats at a Glance

Gemini Omni 1.1 Flash

• Input pricing: $1.50/M tokens
• Output pricing: $17.50/M tokens
• Context window: 1,048,576 tokens
• Max output: 57,920 tokens

Watch out for

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

o4-mini

• Input pricing: $1.10/M tokens
• Output pricing: $4.40/M tokens
• Context window: 2,000,000 tokens
• Max output: 131,072 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

Gemini Omni 1.1 Flash (Google)

Cost Calculator

Provider

Model

Input Tokens

Output Tokens

Requests/Day

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o4-mini (OpenAI)

Cost Calculator

Provider

Model

Input Tokens

Output Tokens

Requests/Day

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Start using Gemini Omni 1.1 Flash today

Start using o4-mini today

Frequently Asked Questions

Which is cheaper, Gemini Omni 1.1 Flash or o4-mini?▼

o4-mini is cheaper for input tokens at $1.10 per million tokens vs $1.50 for Gemini Omni 1.1 Flash — that's 27% savings on input costs.

What is the context window difference between Gemini Omni 1.1 Flash and o4-mini?▼

Gemini Omni 1.1 Flash supports 1,048,576 tokens while o4-mini supports 2,000,000 tokens — a difference of 951,424 tokens in favor of o4-mini.

Which model is better for AI Chatbot?▼

Both models support text. For ai chatbot, o4-mini is the lower-cost option, while o4-mini offers a larger context window (2,000,000 vs 1,048,576 tokens). Choose o4-mini for budget sensitivity or o4-mini 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, Gemini Omni 1.1 Flash costs about $30.75/month and o4-mini costs about $9.90/month. Overall, o4-mini has lower combined input + output rates ($1.10 in, $4.40 out) vs Gemini Omni 1.1 Flash.

Where can I compare Google and OpenAI API pricing beyond this model matchup?▼

See the Google vs OpenAI provider comparison page for lineup-level averages, then review each model page for exact per-token rates.