Model Comparison

Claude Opus 5 vs GPT-4 TurboWhich is better in 2026?

Comparing Claude Opus 5 and GPT-4 Turbo across benchmarks, pricing, and capabilities.

Verdict: Claude Opus 5 vs GPT-4 Turbo — which is better?

Claude Opus 5 (by Anthropic) and GPT-4 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.

On price, Claude Opus 5 is roughly 1.5x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Claude Opus 5 also accepts a larger context window (1,000,000 input tokens), making it the stronger choice for long documents and large codebases.

Choose Claude Opus 5 if…

  • cost matters — it's about 1.5x cheaper per token
  • you process long inputs — it offers a 1,000,000 token context window
  • you want the most recent training data — it shipped Jul 2026

Choose GPT-4 Turbo if…

  • you want predictable pricing at $10.00/M input and $30.00/M output

Performance Benchmarks

Comparative analysis across standard metrics

No common benchmarks found

Claude Opus 5 and GPT-4 Turbodon't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Claude Opus 5 costs less

For input processing, Claude Opus 5 ($5.00/1M tokens) is 2.0x cheaper than GPT-4 Turbo ($10.00/1M tokens).

For output processing, Claude Opus 5 ($25.00/1M tokens) is 1.2x cheaper than GPT-4 Turbo ($30.00/1M tokens).

In conclusion, GPT-4 Turbo is more expensive than Claude Opus 5.*

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

Lowest available price from all providers
Sat Jul 25 2026 • llm-stats.com
Anthropic
Claude Opus 5
Input tokens$5.00
Output tokens$25.00
Best providerAnthropic
OpenAI
GPT-4 Turbo
Input tokens$10.00
Output tokens$30.00
Best providerAzure
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Claude Opus 5 accepts 1,000,000 input tokens compared to GPT-4 Turbo's 128,000 tokens. Claude Opus 5 can generate longer responses up to 128,000 tokens, while GPT-4 Turbo is limited to 4,096 tokens.

Anthropic
Claude Opus 5
Input1,000,000 tokens
Output128,000 tokens
OpenAI
GPT-4 Turbo
Input128,000 tokens
Output4,096 tokens
Sat Jul 25 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Claude Opus 5 supports multimodal inputs, whereas GPT-4 Turbo does not.

Claude Opus 5 can handle both text and other forms of data like images, making it suitable for multimodal applications.

Claude Opus 5

Text
Images
Audio
Video

GPT-4 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 Opus 5

Proprietary

Closed source

GPT-4 Turbo

Proprietary

Closed source

Release Timeline

When each model was launched

Claude Opus 5 was released on 2026-07-24, while GPT-4 Turbo was released on 2024-04-09.

Claude Opus 5 is 28 months newer than GPT-4 Turbo.

Claude Opus 5

Jul 24, 2026

0 days ago

2.3yr newer
GPT-4 Turbo

Apr 9, 2024

2.3 years ago

Knowledge Cutoff

When training data ends

GPT-4 Turbo has a documented knowledge cutoff of 2023-12-31, while Claude Opus 5's cutoff date is not specified.

We can confirm GPT-4 Turbo's training data extends to 2023-12-31, but cannot make a direct comparison without Claude Opus 5's cutoff date.

Claude Opus 5

—

GPT-4 Turbo

Dec 2023

Provider Availability

Claude Opus 5 is available from Anthropic. GPT-4 Turbo is available from Azure, OpenAI.

Claude Opus 5

anthropic logo
Anthropic
Input Price:Input: $5.00/1MOutput Price:Output: $25.00/1M

GPT-4 Turbo

azure logo
Azure
Input Price:Input: $10.00/1MOutput Price:Output: $30.00/1M
openai logo
OpenAI
Input Price:Input: $10.00/1MOutput Price:Output: $30.00/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

Anthropic
Larger context window (1,000,000 tokens)
Supports multimodal inputs
Less expensive input tokens
Less expensive output tokens
OpenAI

No standout differentiators in the data we have for this pair.

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against Claude Opus 5 and GPT-4 Turbo side-by-side, then vote on the output you prefer.

Claude Opus 5
✓ Preferred
GPT-4 Turbo
Open in Playground
AI Model Comparison Table
Feature
Anthropic
Claude Opus 5
OpenAI
GPT-4 Turbo

FAQ

Common questions about Claude Opus 5 vs GPT-4 Turbo.

Which is better, Claude Opus 5 or GPT-4 Turbo?

Claude Opus 5 (Anthropic) and GPT-4 Turbo (OpenAI) each have strengths in different areas. Compare their benchmark scores, pricing, context windows, and capabilities above to determine which fits your needs.

How does Claude Opus 5 compare to GPT-4 Turbo in benchmarks?

Claude Opus 5 scores BrowseComp: 90.8%, BioMysteryBench: 90.1%, OSWorld 2.0: 70.6%, DeepSWE 1.1: 68.8%, Humanity's Last Exam: 64.7%. GPT-4 Turbo scores MGSM: 88.5%, HumanEval: 87.1%, MMLU: 86.5%, DROP: 86.0%, MATH: 72.6%.

Is Claude Opus 5 cheaper than GPT-4 Turbo?

Claude Opus 5 is 2.0x cheaper for input tokens. Claude Opus 5 costs $5.00/M input and $25.00/M output via anthropic. GPT-4 Turbo costs $10.00/M input and $30.00/M output via azure.

What are the context window sizes for Claude Opus 5 and GPT-4 Turbo?

Claude Opus 5 supports 1.0M tokens and GPT-4 Turbo supports 128K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Claude Opus 5 and GPT-4 Turbo?

Key differences include context window (1.0M vs 128K), input pricing ($5.00 vs $10.00/M), multimodal support (yes vs no). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude Opus 5 and GPT-4 Turbo?

Claude Opus 5 is developed by Anthropic and GPT-4 Turbo is developed by OpenAI.

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