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GPT 3.5 Turbo vs Claude Sonnet 5

At a glance

OpenAI's original fast chat model optimized for efficiency.

16K ctx$0.50/$1.50 per M

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

801M ctx$2.00/$10.00 per M#26/92
Agent Demos
All agent demos

No shared agent demos for these models yet.

AI Output
All AI outputs

No captured outputs for these models yet.

Benchmarks
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This model hasn't been benchmarked yet.

Reasoning
CI 72.7-84.7
CodingInsufficient data
AgenticInsufficient data
Sources:Epoch ECI·Epoch AI·OpenRouter· as of 2026-07-10
Capability
CapabilityECI80.1
Reasoning & Knowledge
Graduate Science90.5%Factual Recall25.0%
Math
Competition Math94.7%
Specs
16K
Context
4K
Max output
May 2023
Released
1M
Context
128K
Max output
Jun 2026
Released
Capabilities
Vision
Audio
Reasoning
Vision
Audio
Reasoning
Pricing
Live pricing, shown before you run
Input75%$0.50/M tokens
Output85%$1.50/M tokens
Live pricing, shown before you run
Input$2.00/M tokens
Output$10.00/M tokens
Cache read$0.20/M tokens
Cache write$2.50/M tokens
Web search$0.01/search
Chat with GPT 3.5 TurboGo to model
Chat with Claude Sonnet 5Go to model
Frequently Asked Questions: GPT 3.5 Turbo vs Claude Sonnet 5▼

Which is better, GPT 3.5 Turbo or Claude Sonnet 5?

▼

Both GPT 3.5 Turbo and Claude Sonnet 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, GPT 3.5 Turbo or Claude Sonnet 5?

▼

GPT 3.5 Turbo has a lower blended cost. GPT 3.5 Turbo: $0.50 input / $1.50 output. Claude Sonnet 5: $2.00 input / $10.00 output.

Which has a larger context window, GPT 3.5 Turbo or Claude Sonnet 5?

▼

Claude Sonnet 5 has a larger context window: GPT 3.5 Turbo supports 16K tokens vs Claude Sonnet 5 at 1M tokens.

Do both GPT 3.5 Turbo and Claude Sonnet 5 support vision?

▼

Claude Sonnet 5 supports vision/image input, but GPT 3.5 Turbo does not.

What are the key differences between GPT 3.5 Turbo and Claude Sonnet 5?

▼

Key differences: GPT 3.5 Turbo is significantly cheaper; only Claude Sonnet 5 supports vision input; only Claude Sonnet 5 offers extended reasoning mode. 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 GPT 3.5 Turbo and Claude Sonnet 5 for free on idapt.app to see which performs better for your specific needs.

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