Model Comparison

Claude 3 Opus vs GPT-3.5 TurboWhich is better in 2026?

Claude 3 Opus significantly outperforms across most benchmarks. GPT-3.5 Turbo is 40.0x cheaper per token.

Verdict: Claude 3 Opus vs GPT-3.5 Turbo — which is better?

Claude 3 Opus (by Anthropic) and GPT-3.5 Turbo (by OpenAI) are two of the AI models people compare most. Here is how they stack up on benchmarks, price and capabilities, and which one to pick in 2026.

Claude 3 Opus outperforms in 6 benchmarks (DROP, GPQA, HumanEval, MATH, MGSM, MMLU), while GPT-3.5 Turbo is better at 0 benchmarks. Claude 3 Opus significantly outperforms across most benchmarks.

On price, GPT-3.5 Turbo is roughly 40.0x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Claude 3 Opus also accepts a larger context window (200,000 input tokens), making it the stronger choice for long documents and large codebases.

Choose Claude 3 Opus if…

  • you want the strongest raw capability — it leads on 6 of 6 shared benchmarks
  • you process long inputs — it offers a 200,000 token context window
  • you want the most recent training data — it shipped Feb 2024

Choose GPT-3.5 Turbo if…

  • cost matters — it's about 40.0x cheaper per token
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Performance Benchmarks

Comparative analysis across standard metrics

6 benchmarks

Claude 3 Opus outperforms in 6 benchmarks (DROP, GPQA, HumanEval, MATH, MGSM, MMLU), while GPT-3.5 Turbo is better at 0 benchmarks.

Claude 3 Opus significantly outperforms across most benchmarks.

Thu Jun 25 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

GPT-3.5 Turbo costs less

For input processing, Claude 3 Opus ($15.00/1M tokens) is 30.0x more expensive than GPT-3.5 Turbo ($0.50/1M tokens).

For output processing, Claude 3 Opus ($75.00/1M tokens) is 50.0x more expensive than GPT-3.5 Turbo ($1.50/1M tokens).

In conclusion, Claude 3 Opus is more expensive than GPT-3.5 Turbo.*

* Using a 3:1 ratio of input to output tokens

Lowest available price from all providers
Thu Jun 25 2026 • llm-stats.com
Anthropic
Claude 3 Opus
Input tokens$15.00
Output tokens$75.00
Best providerAnthropic
OpenAI
GPT-3.5 Turbo
Input tokens$0.50
Output tokens$1.50
Best providerAzure
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Claude 3 Opus accepts 200,000 input tokens compared to GPT-3.5 Turbo's 16,385 tokens. Claude 3 Opus can generate longer responses up to 200,000 tokens, while GPT-3.5 Turbo is limited to 4,096 tokens.

Anthropic
Claude 3 Opus
Input200,000 tokens
Output200,000 tokens
OpenAI
GPT-3.5 Turbo
Input16,385 tokens
Output4,096 tokens
Thu Jun 25 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Claude 3 Opus supports multimodal inputs, whereas GPT-3.5 Turbo does not.

Claude 3 Opus can handle both text and other forms of data like images, making it suitable for multimodal applications.

Claude 3 Opus

Text
Images
Audio
Video

GPT-3.5 Turbo

Text
Images
Audio
Video

License

Usage and distribution terms

Both models are licensed under proprietary licenses.

Both models have usage restrictions defined by their respective organizations.

Claude 3 Opus

Proprietary

Closed source

GPT-3.5 Turbo

Proprietary

Closed source

Release Timeline

When each model was launched

Claude 3 Opus was released on 2024-02-29, while GPT-3.5 Turbo was released on 2023-03-21.

Claude 3 Opus is 12 months newer than GPT-3.5 Turbo.

Claude 3 Opus

Feb 29, 2024

2.3 years ago

11mo newer
GPT-3.5 Turbo

Mar 21, 2023

3.3 years ago

Knowledge Cutoff

When training data ends

GPT-3.5 Turbo has a documented knowledge cutoff of 2021-09-30, while Claude 3 Opus's cutoff date is not specified.

We can confirm GPT-3.5 Turbo's training data extends to 2021-09-30, but cannot make a direct comparison without Claude 3 Opus's cutoff date.

Claude 3 Opus

—

GPT-3.5 Turbo

Sep 2021

Provider Availability

Claude 3 Opus is available from Anthropic, Bedrock, Google. GPT-3.5 Turbo is available from Azure, OpenAI.

Claude 3 Opus

anthropic logo
Anthropic
Input Price:Input: $15.00/1MOutput Price:Output: $75.00/1M
bedrock logo
AWS Bedrock
Input Price:Input: $15.00/1MOutput Price:Output: $75.00/1M
google logo
Google
Input Price:Input: $15.00/1MOutput Price:Output: $75.00/1M

GPT-3.5 Turbo

azure logo
Azure
Input Price:Input: $0.50/1MOutput Price:Output: $1.50/1M
openai logo
OpenAI
Input Price:Input: $0.50/1MOutput Price:Output: $1.50/1M
* Prices shown are per million tokens

Outputs Comparison

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Key Takeaways

Anthropic
Larger context window (200,000 tokens)
Supports multimodal inputs
Higher DROP score (83.1% vs 70.2%)
Higher GPQA score (50.4% vs 30.8%)
Higher HumanEval score (84.9% vs 68.0%)
Higher MATH score (60.1% vs 43.1%)
Higher MGSM score (90.7% vs 56.3%)
Higher MMLU score (86.8% vs 69.8%)
OpenAI
Less expensive input tokens
Less expensive output tokens

Detailed Comparison

AI Model Comparison Table
Feature
Anthropic
Claude 3 Opus
OpenAI
GPT-3.5 Turbo

FAQ

Common questions about Claude 3 Opus vs GPT-3.5 Turbo.

Which is better, Claude 3 Opus or GPT-3.5 Turbo?

Claude 3 Opus significantly outperforms across most benchmarks. Claude 3 Opus is made by Anthropic and GPT-3.5 Turbo is made by OpenAI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Claude 3 Opus compare to GPT-3.5 Turbo in benchmarks?

Claude 3 Opus scores ARC-C: 96.4%, HellaSwag: 95.4%, GSM8k: 95.0%, MGSM: 90.7%, BIG-Bench Hard: 86.8%. GPT-3.5 Turbo scores DROP: 70.2%, MMLU: 69.8%, HumanEval: 68.0%, MGSM: 56.3%, MATH: 43.1%.

Is Claude 3 Opus cheaper than GPT-3.5 Turbo?

GPT-3.5 Turbo is 30.0x cheaper for input tokens. Claude 3 Opus costs $15.00/M input and $75.00/M output via anthropic. GPT-3.5 Turbo costs $0.50/M input and $1.50/M output via azure.

What are the context window sizes for Claude 3 Opus and GPT-3.5 Turbo?

Claude 3 Opus supports 200K tokens and GPT-3.5 Turbo supports 16K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Claude 3 Opus and GPT-3.5 Turbo?

Key differences include context window (200K vs 16K), input pricing ($15.00 vs $0.50/M), multimodal support (yes vs no). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude 3 Opus and GPT-3.5 Turbo?

Claude 3 Opus is developed by Anthropic and GPT-3.5 Turbo is developed by OpenAI.

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