Claude Opus 4 vs o1

Compare Anthropic and OpenAI AI models

Anthropic

Claude Opus 4

OpenAI

Try Anthropic →Try OpenAI →

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

Claude Opus 4

Per Request:$0.0525

Daily:$5.25

Monthly:$157.50

Yearly:$1,916.25

o1

Per Request:$0.045

Daily:$4.50

Monthly:$135.00

Yearly:$1,642.50

Cost Differences

$0.007500

Per Request

$0.75

Daily

$22.50

Monthly

$273.75

Yearly

o1 costs less than Claude Opus 4

Feature Comparison

Feature	Claude Opus 4	o1
Provider	Anthropic	OpenAI
Input Price	$15.00/1M tokens	$15.00/1M tokens
Output Price	$75.00/1M tokens	$60.00/1M tokens
Context Window	200,000 tokens	200,000 tokens
Max Output	32,000 tokens	65,536 tokens
Category	flagship	reasoning
Capabilities	textvisioncodereasoning	textreasoning
Release Date	5/14/2025	9/12/2024

Claude Opus 4 vs o1: Which Should You Choose?

Choosing between Claude Opus 4 and o1 depends on your priorities: cost efficiency, context length, or raw capability. o1 is the more affordable option at $15.00/1M input tokens.

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

These models target different tiers: Claude Opus 4 is a flagship model while o1 is reasoning. This means they're optimized for different workloads. Claude Opus 4 is built for complex tasks that require deeper reasoning, while o1 offers better value for routine operations.

Output costs matter too. Claude Opus 4 charges $75.00/1M output tokens vs $60.00 for o1. For generation-heavy workloads (content creation, code generation, summarization), output pricing often dominates your bill. o1 has the edge here at $60.00/1M output tokens.

Multimodal capabilities: Claude Opus 4 supports vision (image inputs) while o1 is text-only. If your application needs image understanding, this narrows your choice.

Best Use Cases

Choose Claude Opus 4 when:

• You need more capabilities (vision, code)
• You're already using Anthropic's API ecosystem

Choose o1 when:

• 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

Claude Opus 4 (Anthropic)

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o1 (OpenAI)

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Frequently Asked Questions

Which is cheaper, Claude Opus 4 or o1?▼

o1 is cheaper for input tokens at $15.00 per million tokens vs $15.00 for Claude Opus 4.

What is the context window difference between Claude Opus 4 and o1?▼

Claude Opus 4 supports 200,000 tokens while o1 supports 200,000 tokens — a difference of 0 tokens in favor of Claude Opus 4.

Which model is better for AI Chatbot?▼

Both models support text. For ai chatbot, o1 is the lower-cost option, while Claude Opus 4 offers a larger context window (200,000 vs 200,000 tokens). Choose o1 for budget sensitivity or Claude Opus 4 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, Claude Opus 4 costs about $157.50/month and o1 costs about $135.00/month. Overall, o1 has lower combined input + output rates ($15.00 in, $60.00 out) vs Claude Opus 4.