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Claude Sonnet 5.5 vs GPT 3.5 Turbo Instruct

At a glance

Anthropic's Sonnet-class model for well-scoped everyday work, a direct upgrade over Claude Sonnet 5.

1M ctx$2.00/$10.00 per M

Instruction-following variant of GPT-3.5 for completion-style tasks.

4K ctx$1.50/$2.00 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
Sources:Epoch AI·OpenRouter· as of 2026-10-02
Reasoning & Knowledge
Graduate Science95.6%Factual Recall46.5%
Math
Competition Math100.0%
Agentic
Task Horizon—
CodingInsufficient data
AgenticInsufficient data
ReasoningInsufficient data
MathInsufficient data
Sources:Epoch AI·OpenRouter· as of 2026-10-02
Cheaper59%
Reasoning & Knowledge
Graduate Science—Factual Recall—
Math
Competition Math—
Agentic
Task Horizon1min
Specs
1M
Context
128K
Max output
Sep 2026
Released
4K
Context
4K
Max output
Sep 2023
Released
Capabilities
Vision
Audio
Reasoning
Vision
Audio
Reasoning
Pricing
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
Live pricing, shown before you run
Input25%$1.50/M tokens
Output80%$2.00/M tokens
Chat with Claude Sonnet 5.5Go to model
Chat with GPT 3.5 Turbo InstructGo to model
Frequently Asked Questions: Claude Sonnet 5.5 vs GPT 3.5 Turbo Instruct▼

Which is better, Claude Sonnet 5.5 or GPT 3.5 Turbo Instruct?

▼

Both Claude Sonnet 5.5 and GPT 3.5 Turbo Instruct 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, Claude Sonnet 5.5 or GPT 3.5 Turbo Instruct?

▼

GPT 3.5 Turbo Instruct has a lower blended cost. Claude Sonnet 5.5: $2.00 input / $10.00 output. GPT 3.5 Turbo Instruct: $1.50 input / $2.00 output.

Which has a larger context window, Claude Sonnet 5.5 or GPT 3.5 Turbo Instruct?

▼

Claude Sonnet 5.5 has a larger context window: Claude Sonnet 5.5 supports 1M tokens vs GPT 3.5 Turbo Instruct at 4K tokens.

Do both Claude Sonnet 5.5 and GPT 3.5 Turbo Instruct support vision?

▼

Claude Sonnet 5.5 supports vision/image input, but GPT 3.5 Turbo Instruct does not.

What are the key differences between Claude Sonnet 5.5 and GPT 3.5 Turbo Instruct?

▼

Key differences: only Claude Sonnet 5.5 supports vision input; only Claude Sonnet 5.5 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 Claude Sonnet 5.5 and GPT 3.5 Turbo Instruct for free on idapt.app to see which performs better for your specific needs.

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