Model Comparison

Claude Opus 4.5 vs DeepSeek-V2.5

Claude Opus 4.5 significantly outperforms across most benchmarks. DeepSeek-V2.5 is 57.1x cheaper per token.

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Performance Benchmarks

Comparative analysis across standard metrics

1 benchmarks

Claude Opus 4.5 outperforms in 1 benchmarks (SWE-Bench Verified), while DeepSeek-V2.5 is better at 0 benchmarks.

Claude Opus 4.5 significantly outperforms across most benchmarks.

Sat May 09 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

DeepSeek-V2.5 costs less

For input processing, Claude Opus 4.5 ($5.00/1M tokens) is 35.7x more expensive than DeepSeek-V2.5 ($0.14/1M tokens).

For output processing, Claude Opus 4.5 ($25.00/1M tokens) is 89.3x more expensive than DeepSeek-V2.5 ($0.28/1M tokens).

In conclusion, Claude Opus 4.5 is more expensive than DeepSeek-V2.5.*

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

Lowest available price from all providers
Sat May 09 2026 • llm-stats.com
Anthropic
Claude Opus 4.5
Input tokens$5.00
Output tokens$25.00
Best providerAnthropic
DeepSeek
DeepSeek-V2.5
Input tokens$0.14
Output tokens$0.28
Best providerDeepSeek
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Claude Opus 4.5 accepts 200,000 input tokens compared to DeepSeek-V2.5's 8,192 tokens. Claude Opus 4.5 can generate longer responses up to 64,000 tokens, while DeepSeek-V2.5 is limited to 8,192 tokens.

Anthropic
Claude Opus 4.5
Input200,000 tokens
Output64,000 tokens
DeepSeek
DeepSeek-V2.5
Input8,192 tokens
Output8,192 tokens
Sat May 09 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Claude Opus 4.5 supports multimodal inputs, whereas DeepSeek-V2.5 does not.

Claude Opus 4.5 can handle both text and other forms of data like images, making it suitable for multimodal applications.

Claude Opus 4.5

Text
Images
Audio
Video

DeepSeek-V2.5

Text
Images
Audio
Video

License

Usage and distribution terms

Claude Opus 4.5 is licensed under a proprietary license, while DeepSeek-V2.5 uses deepseek.

License differences may affect how you can use these models in commercial or open-source projects.

Claude Opus 4.5

Proprietary

Closed source

DeepSeek-V2.5

deepseek

Open weights

Release Timeline

When each model was launched

Claude Opus 4.5 was released on 2025-11-24, while DeepSeek-V2.5 was released on 2024-05-08.

Claude Opus 4.5 is 19 months newer than DeepSeek-V2.5.

Claude Opus 4.5

Nov 24, 2025

5 months ago

1.5yr newer
DeepSeek-V2.5

May 8, 2024

2.0 years ago

Knowledge Cutoff

When training data ends

Claude Opus 4.5 has a documented knowledge cutoff of 2025-03-31, while DeepSeek-V2.5's cutoff date is not specified.

We can confirm Claude Opus 4.5's training data extends to 2025-03-31, but cannot make a direct comparison without DeepSeek-V2.5's cutoff date.

Claude Opus 4.5

Mar 2025

DeepSeek-V2.5

—

Provider Availability

Claude Opus 4.5 is available from Anthropic. DeepSeek-V2.5 is available from DeepSeek, DeepInfra, Hyperbolic.

Claude Opus 4.5

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

DeepSeek-V2.5

deepseek logo
DeepSeek
Input Price:Input: $0.14/1MOutput Price:Output: $0.28/1M
deepinfra logo
Deepinfra
Input Price:Input: $0.70/1MOutput Price:Output: $1.40/1M
hyperbolic logo
Hyperbolic
Input Price:Input: $2.00/1MOutput Price:Output: $2.00/1M
* Prices shown are per million tokens

Outputs Comparison

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Key Takeaways

Anthropic
Larger context window (200,000 tokens)
Supports multimodal inputs
Higher SWE-Bench Verified score (80.9% vs 16.8%)
DeepSeek
Less expensive input tokens
Less expensive output tokens
Has open weights

Detailed Comparison

AI Model Comparison Table
Feature
Anthropic
Claude Opus 4.5
DeepSeek
DeepSeek-V2.5

FAQ

Common questions about Claude Opus 4.5 vs DeepSeek-V2.5.

Which is better, Claude Opus 4.5 or DeepSeek-V2.5?

Claude Opus 4.5 significantly outperforms across most benchmarks. Claude Opus 4.5 is made by Anthropic and DeepSeek-V2.5 is made by DeepSeek. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Claude Opus 4.5 compare to DeepSeek-V2.5 in benchmarks?

Claude Opus 4.5 scores Tau2 Telecom: 98.2%, MMMLU: 90.8%, Tau2 Retail: 88.9%, GPQA: 87.0%, SWE-Bench Verified: 80.9%. DeepSeek-V2.5 scores GSM8k: 95.1%, MT-Bench: 90.2%, HumanEval: 89.0%, BBH: 84.3%, AlignBench: 80.4%.

Is Claude Opus 4.5 cheaper than DeepSeek-V2.5?

DeepSeek-V2.5 is 35.7x cheaper for input tokens. Claude Opus 4.5 costs $5.00/M input and $25.00/M output via anthropic. DeepSeek-V2.5 costs $0.14/M input and $0.28/M output via deepseek.

What are the context window sizes for Claude Opus 4.5 and DeepSeek-V2.5?

Claude Opus 4.5 supports 200K tokens and DeepSeek-V2.5 supports 8K 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 4.5 and DeepSeek-V2.5?

Key differences include context window (200K vs 8K), input pricing ($5.00 vs $0.14/M), multimodal support (yes vs no), licensing (Proprietary vs deepseek). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude Opus 4.5 and DeepSeek-V2.5?

Claude Opus 4.5 is developed by Anthropic and DeepSeek-V2.5 is developed by DeepSeek.