Codex Mini vs o1-mini

Compare OpenAI and OpenAI AI models

OpenAI

Codex Mini

OpenAI

o1-mini

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

Codex Mini

Per Request:$0.004500

Daily:$0.45

Monthly:$13.50

Yearly:$164.25

o1-mini

Per Request:$0.003300

Daily:$0.33

Monthly:$9.90

Yearly:$120.45

Cost Differences

$0.001200

Per Request

$0.12

Daily

$3.60

Monthly

$43.80

Yearly

o1-mini costs less than Codex Mini

Feature Comparison

Feature	Codex Mini	o1-mini
Provider	OpenAI	OpenAI
Input Price	$1.50/1M tokens	$1.10/1M tokens
Output Price	$6.00/1M tokens	$4.40/1M tokens
Context Window	200,000 tokens	128,000 tokens
Max Output	32,768 tokens	65,536 tokens
Category	efficient	reasoning
Capabilities	textcodereasoning	textreasoning
Release Date	2/2/2026	9/12/2024

Codex Mini vs o1-mini: Which Should You Choose?

Choosing between Codex Mini and o1-mini depends on your priorities: cost efficiency, context length, or raw capability. o1-mini is the more affordable option at $1.10/1M input tokens — 27% cheaper than Codex Mini. Meanwhile, Codex Mini offers a significantly larger context window at 200,000 tokens vs 128,000 for o1-mini.

These models target different tiers: Codex Mini is a efficient model while o1-mini is reasoning. This means they're optimized for different workloads. o1-mini targets more demanding workloads, while Codex Mini provides a cost-effective option for everyday tasks.

Output costs matter too. Codex Mini charges $6.00/1M output tokens vs $4.40 for o1-mini. For generation-heavy workloads (content creation, code generation, summarization), output pricing often dominates your bill. o1-mini has the edge here at $4.40/1M output tokens.

Best Use Cases

Choose Codex Mini when:

• You need a larger context window (200,000 tokens)
• You need more capabilities (code)
• You're already using OpenAI's API ecosystem
• You're running high-volume, latency-sensitive workloads

Choose o1-mini when:

• Budget is a primary concern
• You need longer outputs (up to 65,536 tokens)
• You're already using OpenAI's API ecosystem

Try Different Scenarios

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

Codex Mini (OpenAI)

Cost Calculator

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o1-mini (OpenAI)

Cost Calculator

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Start using Codex Mini today

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Frequently Asked Questions

Which is cheaper, Codex Mini or o1-mini?▼

o1-mini is cheaper for input tokens at $1.10 per million tokens vs $1.50 for Codex Mini — that's 27% savings on input costs.

What is the context window difference between Codex Mini and o1-mini?▼

Codex Mini supports 200,000 tokens while o1-mini supports 128,000 tokens — a difference of 72,000 tokens in favor of Codex Mini.

Which model is better for AI Chatbot?▼

Both models support text. For ai chatbot, o1-mini is the lower-cost option, while Codex Mini offers a larger context window (200,000 vs 128,000 tokens). Choose o1-mini for budget sensitivity or Codex 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, Codex Mini costs about $13.50/month and o1-mini costs about $9.90/month. Overall, o1-mini has lower combined input + output rates ($1.10 in, $4.40 out) vs Codex Mini.