Model Comparison

Claude Opus 4.6 vs ChatGPT-4o LatestWhich is better in 2026?

Claude Opus 4.6 significantly outperforms across most benchmarks. ChatGPT-4o Latest is 2.3x cheaper per token.

Verdict: Claude Opus 4.6 vs ChatGPT-4o Latest — which is better?

Claude Opus 4.6 (by Anthropic) and ChatGPT-4o Latest (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 Opus 4.6 outperforms in 1 benchmarks (GPQA), while ChatGPT-4o Latest is better at 0 benchmarks. Claude Opus 4.6 significantly outperforms across most benchmarks.

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 4.6 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 4.6 if…

  • you want the strongest raw capability — it leads on 1 of 1 shared benchmarks
  • you process long inputs — it offers a 1,000,000 token context window
  • you want the most recent training data — it shipped Feb 2026

Choose ChatGPT-4o Latest if…

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

Comparative analysis across standard metrics

1 benchmarks

Claude Opus 4.6 outperforms in 1 benchmarks (GPQA), while ChatGPT-4o Latest is better at 0 benchmarks.

Claude Opus 4.6 significantly outperforms across most benchmarks.

Sun Jun 07 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

ChatGPT-4o Latest costs less

For input processing, Claude Opus 4.6 ($5.00/1M tokens) is 2.0x more expensive than ChatGPT-4o Latest ($2.50/1M tokens).

For output processing, Claude Opus 4.6 ($25.00/1M tokens) is 2.5x more expensive than ChatGPT-4o Latest ($10.00/1M tokens).

In conclusion, Claude Opus 4.6 is more expensive than ChatGPT-4o Latest.*

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

Lowest available price from all providers
Sun Jun 07 2026 • llm-stats.com
Anthropic
Claude Opus 4.6
Input tokens$5.00
Output tokens$25.00
Best providerAnthropic
OpenAI
ChatGPT-4o Latest
Input tokens$2.50
Output tokens$10.00
Best providerOpenAI
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Claude Opus 4.6 accepts 1,000,000 input tokens compared to ChatGPT-4o Latest's 128,000 tokens. Claude Opus 4.6 can generate longer responses up to 128,000 tokens, while ChatGPT-4o Latest is limited to 16,384 tokens.

Anthropic
Claude Opus 4.6
Input1,000,000 tokens
Output128,000 tokens
OpenAI
ChatGPT-4o Latest
Input128,000 tokens
Output16,384 tokens
Sun Jun 07 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Claude Opus 4.6 and ChatGPT-4o Latest support multimodal inputs.

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

Claude Opus 4.6

Text
Images
Audio
Video

ChatGPT-4o Latest

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 4.6

Proprietary

Closed source

ChatGPT-4o Latest

Proprietary

Closed source

Release Timeline

When each model was launched

Claude Opus 4.6 was released on 2026-02-05, while ChatGPT-4o Latest was released on 2024-05-13.

Claude Opus 4.6 is 21 months newer than ChatGPT-4o Latest.

Claude Opus 4.6

Feb 5, 2026

4 months ago

1.7yr newer
ChatGPT-4o Latest

May 13, 2024

2.1 years ago

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

Claude Opus 4.6 is available from Anthropic. ChatGPT-4o Latest is available from OpenAI.

Claude Opus 4.6

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

ChatGPT-4o Latest

openai logo
OpenAI
Input Price:Input: $2.50/1MOutput Price:Output: $10.00/1M
* 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)
Higher GPQA score (91.3% vs 84.0%)
OpenAI
Less expensive input tokens
Less expensive output tokens

Detailed Comparison

AI Model Comparison Table
Feature
Anthropic
Claude Opus 4.6
OpenAI
ChatGPT-4o Latest

FAQ

Common questions about Claude Opus 4.6 vs ChatGPT-4o Latest.

Which is better, Claude Opus 4.6 or ChatGPT-4o Latest?

Claude Opus 4.6 significantly outperforms across most benchmarks. Claude Opus 4.6 is made by Anthropic and ChatGPT-4o Latest is made by OpenAI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Claude Opus 4.6 compare to ChatGPT-4o Latest in benchmarks?

Claude Opus 4.6 scores Vending-Bench 2: 100.0%, AIME 2025: 99.8%, Tau2 Telecom: 99.3%, Graphwalks parents >128k: 95.4%, MRCR v2 (8-needle): 93.0%. ChatGPT-4o Latest scores GPQA: 84.0%.

Is Claude Opus 4.6 cheaper than ChatGPT-4o Latest?

ChatGPT-4o Latest is 2.0x cheaper for input tokens. Claude Opus 4.6 costs $5.00/M input and $25.00/M output via anthropic. ChatGPT-4o Latest costs $2.50/M input and $10.00/M output via openai.

What are the context window sizes for Claude Opus 4.6 and ChatGPT-4o Latest?

Claude Opus 4.6 supports 1.0M tokens and ChatGPT-4o Latest 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 4.6 and ChatGPT-4o Latest?

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

Who makes Claude Opus 4.6 and ChatGPT-4o Latest?

Claude Opus 4.6 is developed by Anthropic and ChatGPT-4o Latest is developed by OpenAI.

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