Model Comparison

Claude Sonnet 4.6 vs DeepSeek-V4-Flash-MaxWhich is better in 2026?

Claude Sonnet 4.6 significantly outperforms across most benchmarks. DeepSeek-V4-Flash-Max is 34.3x cheaper per token.

Verdict: Claude Sonnet 4.6 vs DeepSeek-V4-Flash-Max — which is better?

Claude Sonnet 4.6 (by Anthropic) and DeepSeek-V4-Flash-Max (by DeepSeek) 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 Sonnet 4.6 outperforms in 6 benchmarks (BrowseComp, GDPval-AA, GPQA, Humanity's Last Exam, SWE-Bench Verified, Terminal-Bench 2.0), while DeepSeek-V4-Flash-Max is better at 1 benchmark (MCP Atlas). Claude Sonnet 4.6 significantly outperforms across most benchmarks.

On price, DeepSeek-V4-Flash-Max is roughly 34.3x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

DeepSeek-V4-Flash-Max also accepts a larger context window (1,048,576 input tokens), making it the stronger choice for long documents and large codebases.

Choose Claude Sonnet 4.6 if…

  • you want the strongest raw capability — it leads on 6 of 7 shared benchmarks

Choose DeepSeek-V4-Flash-Max if…

  • cost matters — it's about 34.3x cheaper per token
  • you process long inputs — it offers a 1,048,576 token context window
  • you want the most recent training data — it shipped Apr 2026
  • you need open weights you can self-host or fine-tune
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Performance Benchmarks

Comparative analysis across standard metrics

7 benchmarks

Claude Sonnet 4.6 outperforms in 6 benchmarks (BrowseComp, GDPval-AA, GPQA, Humanity's Last Exam, SWE-Bench Verified, Terminal-Bench 2.0), while DeepSeek-V4-Flash-Max is better at 1 benchmark (MCP Atlas).

Claude Sonnet 4.6 significantly outperforms across most benchmarks.

Mon Jun 08 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

DeepSeek-V4-Flash-Max costs less

For input processing, Claude Sonnet 4.6 ($3.00/1M tokens) is 21.4x more expensive than DeepSeek-V4-Flash-Max ($0.14/1M tokens).

For output processing, Claude Sonnet 4.6 ($15.00/1M tokens) is 53.6x more expensive than DeepSeek-V4-Flash-Max ($0.28/1M tokens).

In conclusion, Claude Sonnet 4.6 is more expensive than DeepSeek-V4-Flash-Max.*

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

Lowest available price from all providers
Mon Jun 08 2026 • llm-stats.com
Anthropic
Claude Sonnet 4.6
Input tokens$3.00
Output tokens$15.00
Best providerAnthropic
DeepSeek
DeepSeek-V4-Flash-Max
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

DeepSeek-V4-Flash-Max accepts 1,048,576 input tokens compared to Claude Sonnet 4.6's 200,000 tokens. DeepSeek-V4-Flash-Max can generate longer responses up to 393,216 tokens, while Claude Sonnet 4.6 is limited to 64,000 tokens.

Anthropic
Claude Sonnet 4.6
Input200,000 tokens
Output64,000 tokens
DeepSeek
DeepSeek-V4-Flash-Max
Input1,048,576 tokens
Output393,216 tokens
Mon Jun 08 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Claude Sonnet 4.6 supports multimodal inputs, whereas DeepSeek-V4-Flash-Max does not.

Claude Sonnet 4.6 can handle both text and other forms of data like images, making it suitable for multimodal applications.

Claude Sonnet 4.6

Text
Images
Audio
Video

DeepSeek-V4-Flash-Max

Text
Images
Audio
Video

License

Usage and distribution terms

Claude Sonnet 4.6 is licensed under a proprietary license, while DeepSeek-V4-Flash-Max uses MIT.

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

Claude Sonnet 4.6

Proprietary

Closed source

DeepSeek-V4-Flash-Max

MIT

Open weights

Release Timeline

When each model was launched

Claude Sonnet 4.6 was released on 2026-02-17, while DeepSeek-V4-Flash-Max was released on 2026-04-23.

DeepSeek-V4-Flash-Max is 2 months newer than Claude Sonnet 4.6.

Claude Sonnet 4.6

Feb 17, 2026

3 months ago

DeepSeek-V4-Flash-Max

Apr 23, 2026

1 months ago

2mo 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

Claude Sonnet 4.6 is available from Anthropic. DeepSeek-V4-Flash-Max is available from DeepSeek.

Claude Sonnet 4.6

anthropic logo
Anthropic
Input Price:Input: $3.00/1MOutput Price:Output: $15.00/1M

DeepSeek-V4-Flash-Max

deepseek logo
DeepSeek
Input Price:Input: $0.14/1MOutput Price:Output: $0.28/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

Anthropic
Supports multimodal inputs
Higher BrowseComp score (74.7% vs 73.2%)
Higher GDPval-AA score (54.4% vs 46.5%)
Higher GPQA score (89.9% vs 88.1%)
Higher Humanity's Last Exam score (49.0% vs 45.1%)
Higher SWE-Bench Verified score (79.6% vs 79.0%)
Higher Terminal-Bench 2.0 score (59.1% vs 56.9%)
DeepSeek
Larger context window (1,048,576 tokens)
Less expensive input tokens
Less expensive output tokens
Has open weights
Higher MCP Atlas score (69.0% vs 61.3%)

Detailed Comparison

AI Model Comparison Table
Feature
Anthropic
Claude Sonnet 4.6
DeepSeek
DeepSeek-V4-Flash-Max

FAQ

Common questions about Claude Sonnet 4.6 vs DeepSeek-V4-Flash-Max.

Which is better, Claude Sonnet 4.6 or DeepSeek-V4-Flash-Max?

Claude Sonnet 4.6 significantly outperforms across most benchmarks. Claude Sonnet 4.6 is made by Anthropic and DeepSeek-V4-Flash-Max is made by DeepSeek. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Claude Sonnet 4.6 compare to DeepSeek-V4-Flash-Max in benchmarks?

Claude Sonnet 4.6 scores Tau2 Telecom: 97.9%, Tau2 Retail: 91.7%, GPQA: 89.9%, MMMLU: 89.3%, SWE-Bench Verified: 79.6%. DeepSeek-V4-Flash-Max scores CodeForces: 100.0%, HMMT Feb 26: 94.8%, LiveCodeBench: 91.6%, IMO-AnswerBench: 88.4%, GPQA: 88.1%.

Is Claude Sonnet 4.6 cheaper than DeepSeek-V4-Flash-Max?

DeepSeek-V4-Flash-Max is 21.4x cheaper for input tokens. Claude Sonnet 4.6 costs $3.00/M input and $15.00/M output via anthropic. DeepSeek-V4-Flash-Max costs $0.14/M input and $0.28/M output via deepseek.

What are the context window sizes for Claude Sonnet 4.6 and DeepSeek-V4-Flash-Max?

Claude Sonnet 4.6 supports 200K tokens and DeepSeek-V4-Flash-Max 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 Claude Sonnet 4.6 and DeepSeek-V4-Flash-Max?

Key differences include context window (200K vs 1.0M), input pricing ($3.00 vs $0.14/M), multimodal support (yes vs no), licensing (Proprietary vs MIT). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude Sonnet 4.6 and DeepSeek-V4-Flash-Max?

Claude Sonnet 4.6 is developed by Anthropic and DeepSeek-V4-Flash-Max is developed by DeepSeek.

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