Model Comparison

Claude Opus 5 vs Gemini 1.5 ProWhich is better in 2026?

Comparing Claude Opus 5 and Gemini 1.5 Pro across benchmarks, pricing, and capabilities.

Verdict: Claude Opus 5 vs Gemini 1.5 Pro — which is better?

Claude Opus 5 (by Anthropic) and Gemini 1.5 Pro (by Google) 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, Gemini 1.5 Pro is roughly 2.3x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Gemini 1.5 Pro also accepts a larger context window (2,097,152 input tokens), making it the stronger choice for long documents and large codebases.

Choose Claude Opus 5 if…

  • you want the most recent training data — it shipped Jul 2026

Choose Gemini 1.5 Pro if…

  • cost matters — it's about 2.3x cheaper per token
  • you process long inputs — it offers a 2,097,152 token context window

Performance Benchmarks

Comparative analysis across standard metrics

No common benchmarks found

Claude Opus 5 and Gemini 1.5 Prodon'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

Gemini 1.5 Pro costs less

For input processing, Claude Opus 5 ($5.00/1M tokens) is 2.0x more expensive than Gemini 1.5 Pro ($2.50/1M tokens).

For output processing, Claude Opus 5 ($25.00/1M tokens) is 2.5x more expensive than Gemini 1.5 Pro ($10.00/1M tokens).

In conclusion, Claude Opus 5 is more expensive than Gemini 1.5 Pro.*

* 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
Google
Gemini 1.5 Pro
Input tokens$2.50
Output tokens$10.00
Best providerGoogle
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Gemini 1.5 Pro accepts 2,097,152 input tokens compared to Claude Opus 5's 1,000,000 tokens. Claude Opus 5 can generate longer responses up to 128,000 tokens, while Gemini 1.5 Pro is limited to 8,192 tokens.

Anthropic
Claude Opus 5
Input1,000,000 tokens
Output128,000 tokens
Google
Gemini 1.5 Pro
Input2,097,152 tokens
Output8,192 tokens
Sat Jul 25 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Claude Opus 5 and Gemini 1.5 Pro support multimodal inputs.

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

Claude Opus 5

Text
Images
Audio
Video

Gemini 1.5 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 5

Proprietary

Closed source

Gemini 1.5 Pro

Proprietary

Closed source

Release Timeline

When each model was launched

Claude Opus 5 was released on 2026-07-24, while Gemini 1.5 Pro was released on 2024-05-01.

Claude Opus 5 is 27 months newer than Gemini 1.5 Pro.

Claude Opus 5

Jul 24, 2026

0 days ago

2.2yr newer
Gemini 1.5 Pro

May 1, 2024

2.2 years ago

Knowledge Cutoff

When training data ends

Gemini 1.5 Pro has a documented knowledge cutoff of 2023-11-01, while Claude Opus 5's cutoff date is not specified.

We can confirm Gemini 1.5 Pro's training data extends to 2023-11-01, but cannot make a direct comparison without Claude Opus 5's cutoff date.

Claude Opus 5

—

Gemini 1.5 Pro

Nov 2023

Provider Availability

Claude Opus 5 is available from Anthropic. Gemini 1.5 Pro is available from Google.

Claude Opus 5

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

Gemini 1.5 Pro

google logo
Google
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

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

Google
Larger context window (2,097,152 tokens)
Less expensive input tokens
Less expensive output tokens

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against Claude Opus 5 and Gemini 1.5 Pro side-by-side, then vote on the output you prefer.

Claude Opus 5
✓ Preferred
Gemini 1.5 Pro
Open in Playground
AI Model Comparison Table
Feature
Anthropic
Claude Opus 5
Google
Gemini 1.5 Pro

FAQ

Common questions about Claude Opus 5 vs Gemini 1.5 Pro.

Which is better, Claude Opus 5 or Gemini 1.5 Pro?

Claude Opus 5 (Anthropic) and Gemini 1.5 Pro (Google) 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 Gemini 1.5 Pro 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%. Gemini 1.5 Pro scores XSTest: 98.8%, FLEURS: 93.3%, HellaSwag: 93.3%, GSM8k: 90.8%, BIG-Bench Hard: 89.2%.

Is Claude Opus 5 cheaper than Gemini 1.5 Pro?

Gemini 1.5 Pro is 2.0x cheaper for input tokens. Claude Opus 5 costs $5.00/M input and $25.00/M output via anthropic. Gemini 1.5 Pro costs $2.50/M input and $10.00/M output via google.

What are the context window sizes for Claude Opus 5 and Gemini 1.5 Pro?

Claude Opus 5 supports 1.0M tokens and Gemini 1.5 Pro supports 2.1M 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 Gemini 1.5 Pro?

Key differences include context window (1.0M vs 2.1M), input pricing ($5.00 vs $2.50/M). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude Opus 5 and Gemini 1.5 Pro?

Claude Opus 5 is developed by Anthropic and Gemini 1.5 Pro is developed by Google.

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