Model Comparison

Claude Opus 4.6 vs GPT-5.2 ProWhich is better in 2026?

Claude Opus 4.6 has a slight edge in benchmark performance. Claude Opus 4.6 is 5.8x cheaper per token.

Verdict: Claude Opus 4.6 vs GPT-5.2 Pro — which is better?

Claude Opus 4.6 (by Anthropic) and GPT-5.2 Pro (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 3 benchmarks (ARC-AGI v2, BrowseComp, Humanity's Last Exam), while GPT-5.2 Pro is better at 2 benchmarks (AIME 2025, GPQA). Claude Opus 4.6 has a slight edge in benchmark performance.

On price, Claude Opus 4.6 is roughly 5.8x 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 3 of 5 shared benchmarks
  • cost matters — it's about 5.8x 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 Feb 2026

Choose GPT-5.2 Pro if…

  • you want predictable pricing at $21.00/M input and $168.00/M output
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Performance Benchmarks

Comparative analysis across standard metrics

5 benchmarks

Claude Opus 4.6 outperforms in 3 benchmarks (ARC-AGI v2, BrowseComp, Humanity's Last Exam), while GPT-5.2 Pro is better at 2 benchmarks (AIME 2025, GPQA).

Claude Opus 4.6 has a slight edge in benchmark performance.

Thu Jun 25 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Claude Opus 4.6 costs less

For input processing, Claude Opus 4.6 ($5.00/1M tokens) is 4.2x cheaper than GPT-5.2 Pro ($21.00/1M tokens).

For output processing, Claude Opus 4.6 ($25.00/1M tokens) is 6.7x cheaper than GPT-5.2 Pro ($168.00/1M tokens).

In conclusion, GPT-5.2 Pro is more expensive than Claude Opus 4.6.*

* 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 Opus 4.6
Input tokens$5.00
Output tokens$25.00
Best providerAnthropic
OpenAI
GPT-5.2 Pro
Input tokens$21.00
Output tokens$168.00
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 GPT-5.2 Pro's 400,000 tokens. Both models can generate responses up to 128,000 tokens.

Anthropic
Claude Opus 4.6
Input1,000,000 tokens
Output128,000 tokens
OpenAI
GPT-5.2 Pro
Input400,000 tokens
Output128,000 tokens
Thu Jun 25 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Claude Opus 4.6 and GPT-5.2 Pro 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

GPT-5.2 Pro

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

GPT-5.2 Pro

Proprietary

Closed source

Release Timeline

When each model was launched

Claude Opus 4.6 was released on 2026-02-05, while GPT-5.2 Pro was released on 2025-12-11.

Claude Opus 4.6 is 2 months newer than GPT-5.2 Pro.

Claude Opus 4.6

Feb 5, 2026

4 months ago

1mo newer
GPT-5.2 Pro

Dec 11, 2025

6 months 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. GPT-5.2 Pro is available from OpenAI.

Claude Opus 4.6

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

GPT-5.2 Pro

openai logo
OpenAI
Input Price:Input: $21.00/1MOutput Price:Output: $168.00/1M
* Prices shown are per million tokens

Outputs Comparison

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Key Takeaways

Anthropic
Larger context window (1,000,000 tokens)
Less expensive input tokens
Less expensive output tokens
Higher ARC-AGI v2 score (68.8% vs 54.2%)
Higher BrowseComp score (84.0% vs 77.9%)
Higher Humanity's Last Exam score (53.1% vs 36.6%)
OpenAI
Higher AIME 2025 score (100.0% vs 99.8%)
Higher GPQA score (93.2% vs 91.3%)

Detailed Comparison

AI Model Comparison Table
Feature
Anthropic
Claude Opus 4.6
OpenAI
GPT-5.2 Pro

FAQ

Common questions about Claude Opus 4.6 vs GPT-5.2 Pro.

Which is better, Claude Opus 4.6 or GPT-5.2 Pro?

Claude Opus 4.6 has a slight edge in benchmark performance. Claude Opus 4.6 is made by Anthropic and GPT-5.2 Pro 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 GPT-5.2 Pro 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%, Tau2 Retail: 91.9%. GPT-5.2 Pro scores AIME 2025: 100.0%, HMMT 2025: 100.0%, GPQA: 93.2%, ARC-AGI: 90.5%, BrowseComp: 77.9%.

Is Claude Opus 4.6 cheaper than GPT-5.2 Pro?

Claude Opus 4.6 is 4.2x cheaper for input tokens. Claude Opus 4.6 costs $5.00/M input and $25.00/M output via anthropic. GPT-5.2 Pro costs $21.00/M input and $168.00/M output via openai.

What are the context window sizes for Claude Opus 4.6 and GPT-5.2 Pro?

Claude Opus 4.6 supports 1.0M tokens and GPT-5.2 Pro supports 400K 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 GPT-5.2 Pro?

Key differences include context window (1.0M vs 400K), input pricing ($5.00 vs $21.00/M). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude Opus 4.6 and GPT-5.2 Pro?

Claude Opus 4.6 is developed by Anthropic and GPT-5.2 Pro is developed by OpenAI.

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