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o3-mini vs Claude Opus 5

At a glance

Cost-efficient reasoning model for STEM tasks.

200K ctx$1.10/$4.40 per M

Anthropic's flagship for demanding reasoning, coding, and long-horizon agentic work.

1M ctx$5.00/$25.00 per M
Demos
All demos

No shared demos for these models yet.

AI Output
All AI outputs

No captured outputs for these models yet.

Benchmarks
See rankings
Reasoning
CodingInsufficient data
AgenticInsufficient data
ReasoningInsufficient data
MathInsufficient data
Sources:OpenRouter
Cheaper81%
Reasoning
CodingInsufficient data
AgenticInsufficient data
ReasoningInsufficient data
MathInsufficient data
Sources:OpenRouter
Specs
200K
Context
100K
Max output
Jan 2025
Released
1M
Context
128K
Max output
Jul 2026
Released
Capabilities
Vision
Audio
Reasoning
Vision
Audio
Reasoning
Pricing
Live pricing, shown before you run
Input78%$1.10/M tokens
Output82%$4.40/M tokens
Cache read$0.55/M tokens
Web search$0.01/search
Live pricing, shown before you run
Input$5.00/M tokens
Output$25.00/M tokens
Cache read9%$0.50/M tokens
Cache write$6.25/M tokens
Web search$0.01/search
Chat with o3-miniGo to model
Chat with Claude Opus 5Go to model
Frequently Asked Questions: o3-mini vs Claude Opus 5▼

Which is better, o3-mini or Claude Opus 5?

▼

Both o3-mini and Claude Opus 5 are capable AI models. The best choice depends on your specific use case: consider pricing, context window, speed, and which capabilities (vision, reasoning, audio) you need.

Which is cheaper, o3-mini or Claude Opus 5?

▼

o3-mini has a lower blended cost. o3-mini: $1.10 input / $4.40 output. Claude Opus 5: $5.00 input / $25.00 output.

Which has a larger context window, o3-mini or Claude Opus 5?

▼

Claude Opus 5 has a larger context window: o3-mini supports 200K tokens vs Claude Opus 5 at 1M tokens.

Do both o3-mini and Claude Opus 5 support vision?

▼

Claude Opus 5 supports vision/image input, but o3-mini does not.

What are the key differences between o3-mini and Claude Opus 5?

▼

Key differences: o3-mini is significantly cheaper; only Claude Opus 5 supports vision input. Compare full specs on this page.

Which model should I choose for my use case?

▼

If cost is your priority, choose the cheaper option. If you need the highest intelligence for complex tasks, pick the higher-scoring model. For long documents or codebases, choose the larger context window. You can try both o3-mini and Claude Opus 5 for free on idapt.app to see which performs better for your specific needs.

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