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Claude Sonnet 5 vs o1

At a glance

Anthropic's fifth-generation Sonnet — near-Opus intelligence at Sonnet speed and price.

801M ctx$2.00/$10.00 per M#26/92

OpenAI's original frontier reasoning model with deep thinking.

75200K ctx$15.00/$60.00 per M#42/92
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
CI 72.7-84.7Provisional
CodingInsufficient data
AgenticInsufficient data
Sources:Epoch ECI·Epoch AI·OpenRouter· as of 2026-07-10
Smarter7%Cheaper85%
Capability
CapabilityECI7%80.1
Reasoning & Knowledge
Graduate Science18%90.5%Factual Recall25.0%
Math
Math Problems—Competition Math29%94.7%Research Math—
Coding
Code Editing—
Agentic
Task Horizon—
Reasoning
CodingInsufficient data
AgenticInsufficient data
Sources:Epoch ECI·Epoch AI·OpenRouter· as of 2026-07-10
Capability
CapabilityECI75.2
Reasoning & Knowledge
Graduate Science76.8%Factual Recall—
Math
Math Problems94.7%Competition Math73.3%Research Math9.3%
Coding
Code Editing61.7%
Agentic
Task Horizon39min
Specs
1M
Context
128K
Max output
Jun 2026
Released
200K
Context
100K
Max output
Dec 2024
Released
Capabilities
Vision
Audio
Reasoning
Vision
Audio
Reasoning
Pricing
Live pricing, shown before you run
Input87%$2.00/M tokens
Output83%$10.00/M tokens
Cache read97%$0.20/M tokens
Cache write$2.50/M tokens
Web search$0.01/search
Live pricing, shown before you run
Input$15.00/M tokens
Output$60.00/M tokens
Cache read$7.50/M tokens
Web search$0.01/search
Chat with Claude Sonnet 5Go to model
Chat with o1Go to model
Frequently Asked Questions: Claude Sonnet 5 vs o1▼

Which is better, Claude Sonnet 5 or o1?

▼

Based on the Capability Index, Claude Sonnet 5 scores higher (80.1 vs 75.2). However, "better" depends on your use case — pricing, speed, context window, and specific capability needs all matter.

Which is cheaper, Claude Sonnet 5 or o1?

▼

Claude Sonnet 5 has a lower blended cost. Claude Sonnet 5: $2.00 input / $10.00 output. o1: $15.00 input / $60.00 output.

Which has a larger context window, Claude Sonnet 5 or o1?

▼

Claude Sonnet 5 has a larger context window: Claude Sonnet 5 supports 1M tokens vs o1 at 200K tokens.

Do both Claude Sonnet 5 and o1 support vision?

▼

Yes, both Claude Sonnet 5 and o1 support vision/image input.

What are the key differences between Claude Sonnet 5 and o1?

▼

Key differences: Claude Sonnet 5 is significantly cheaper. 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 Claude Sonnet 5 and o1 for free on idapt.app to see which performs better for your specific needs.

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