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GPT 3.5 Turbo Instruct vs Claude Opus 5

At a glance

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

4K ctx$1.50/$2.00 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
CodingInsufficient data
AgenticInsufficient data
ReasoningInsufficient data
MathInsufficient data
Sources:Epoch AI·OpenRouter· as of 2026-07-10
Cheaper84%
Agentic
Task Horizon1min
Reasoning
CodingInsufficient data
AgenticInsufficient data
ReasoningInsufficient data
MathInsufficient data
Sources:OpenRouter
Agentic
Task Horizon—
Specs
4K
Context
4K
Max output
Sep 2023
Released
1M
Context
128K
Max output
Jul 2026
Released
Capabilities
Vision
Audio
Reasoning
Vision
Audio
Reasoning
Pricing
Live pricing, shown before you run
Input70%$1.50/M tokens
Output92%$2.00/M tokens
Live pricing, shown before you run
Input$5.00/M tokens
Output$25.00/M tokens
Cache read$0.50/M tokens
Cache write$6.25/M tokens
Web search$0.01/search
Chat with GPT 3.5 Turbo InstructGo to model
Chat with Claude Opus 5Go to model
Frequently Asked Questions: GPT 3.5 Turbo Instruct vs Claude Opus 5▼

Which is better, GPT 3.5 Turbo Instruct or Claude Opus 5?

▼

Both GPT 3.5 Turbo Instruct 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, GPT 3.5 Turbo Instruct or Claude Opus 5?

▼

GPT 3.5 Turbo Instruct has a lower blended cost. GPT 3.5 Turbo Instruct: $1.50 input / $2.00 output. Claude Opus 5: $5.00 input / $25.00 output.

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

▼

Claude Opus 5 has a larger context window: GPT 3.5 Turbo Instruct supports 4K tokens vs Claude Opus 5 at 1M tokens.

Do both GPT 3.5 Turbo Instruct and Claude Opus 5 support vision?

▼

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

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

▼

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

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