Model Comparison

ChatGPT-4o Latest vs Claude Opus 5Which is better in 2026?

Comparing ChatGPT-4o Latest and Claude Opus 5 across benchmarks, pricing, and capabilities.

Verdict: ChatGPT-4o Latest vs Claude Opus 5 — which is better?

ChatGPT-4o Latest (by OpenAI) and Claude Opus 5 (by Anthropic) 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, ChatGPT-4o Latest is roughly 2.3x 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 ChatGPT-4o Latest if…

  • cost matters — it's about 2.3x cheaper per token

Choose Claude Opus 5 if…

  • you process long inputs — it offers a 1,000,000 token context window
  • you want the most recent training data — it shipped Jul 2026

Performance Benchmarks

Comparative analysis across standard metrics

No common benchmarks found

ChatGPT-4o Latest and Claude Opus 5don'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

ChatGPT-4o Latest costs less

For input processing, ChatGPT-4o Latest ($2.50/1M tokens) is 2.0x cheaper than Claude Opus 5 ($5.00/1M tokens).

For output processing, ChatGPT-4o Latest ($10.00/1M tokens) is 2.5x cheaper than Claude Opus 5 ($25.00/1M tokens).

In conclusion, Claude Opus 5 is more expensive than ChatGPT-4o Latest.*

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

Lowest available price from all providers
Mon Jul 27 2026 • llm-stats.com
OpenAI
ChatGPT-4o Latest
Input tokens$2.50
Output tokens$10.00
Best providerOpenAI
Anthropic
Claude Opus 5
Input tokens$5.00
Output tokens$25.00
Best providerAnthropic
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 ChatGPT-4o Latest's 128,000 tokens. Claude Opus 5 can generate longer responses up to 128,000 tokens, while ChatGPT-4o Latest is limited to 16,384 tokens.

OpenAI
ChatGPT-4o Latest
Input128,000 tokens
Output16,384 tokens
Anthropic
Claude Opus 5
Input1,000,000 tokens
Output128,000 tokens
Mon Jul 27 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both ChatGPT-4o Latest and Claude Opus 5 support multimodal inputs.

They are both capable of processing various types of data, offering versatility in application.

ChatGPT-4o Latest

Text
Images
Audio
Video

Claude Opus 5

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.

ChatGPT-4o Latest

Proprietary

Closed source

Claude Opus 5

Proprietary

Closed source

Release Timeline

When each model was launched

ChatGPT-4o Latest was released on 2024-05-13, while Claude Opus 5 was released on 2026-07-24.

Claude Opus 5 is 27 months newer than ChatGPT-4o Latest.

ChatGPT-4o Latest

May 13, 2024

2.2 years ago

Claude Opus 5

Jul 24, 2026

3 days ago

2.2yr newer

Knowledge Cutoff

When training data ends

Neither model specifies a knowledge cutoff date.

Unable to compare the recency of their training data.

No cutoff dates available

Provider Availability

ChatGPT-4o Latest is available from OpenAI. Claude Opus 5 is available from Anthropic.

ChatGPT-4o Latest

openai logo
OpenAI
Input Price:Input: $2.50/1MOutput Price:Output: $10.00/1M

Claude Opus 5

anthropic logo
Anthropic
Input Price:Input: $5.00/1MOutput Price:Output: $25.00/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

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

Detailed Comparison

Interactive Arena

Judge for yourself.

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

ChatGPT-4o Latest
✓ Preferred
Claude Opus 5
Open in Playground
AI Model Comparison Table
Feature
OpenAI
ChatGPT-4o Latest
Anthropic
Claude Opus 5

FAQ

Common questions about ChatGPT-4o Latest vs Claude Opus 5.

Which is better, ChatGPT-4o Latest or Claude Opus 5?

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

How does ChatGPT-4o Latest compare to Claude Opus 5 in benchmarks?

ChatGPT-4o Latest scores GPQA: 84.0%. 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%.

Is ChatGPT-4o Latest cheaper than Claude Opus 5?

ChatGPT-4o Latest is 2.0x cheaper for input tokens. ChatGPT-4o Latest costs $2.50/M input and $10.00/M output via openai. Claude Opus 5 costs $5.00/M input and $25.00/M output via anthropic.

What are the context window sizes for ChatGPT-4o Latest and Claude Opus 5?

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

What are the main differences between ChatGPT-4o Latest and Claude Opus 5?

Key differences include context window (128K vs 1.0M), input pricing ($2.50 vs $5.00/M). See the full comparison above for benchmark-by-benchmark results.

Who makes ChatGPT-4o Latest and Claude Opus 5?

ChatGPT-4o Latest is developed by OpenAI and Claude Opus 5 is developed by Anthropic.

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