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anthropic/claude-sonnet-5-5vsDeepSeek-V4.1-Flash

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Compare the things that matter before you build: current price, capabilities, and latest aggregated LLM7 statistics.

Current pricing

See the cost difference clearly

anthropic/claude-sonnet-5-5

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DeepSeek-V4.1-Flash

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What's different

Only capabilities that differ between these models are listed. Green highlights the broader supported option or larger context window.

Input formats

anthropic/claude-sonnet-5-5

text, image

DeepSeek-V4.1-Flash

text

Vision

anthropic/claude-sonnet-5-5Better fit

Supported

DeepSeek-V4.1-Flash

Not supported

Capability scores

AI-estimated ratings on 30 criteria from head-to-head comparisons against 86 other text models in the LLM7 catalog, judged by TypeSafe Jev from public information (2026-10-20). Each score is the win rate against the field, relative to the strongest model for that criterion (100%). Not a benchmark.

Below 50%50–79%80–94%95%+

anthropic/claude-sonnet-5-5 · leads in 26

86%

Strong

DeepSeek-V4.1-Flash · leads in 3

66%

Moderate

Knowledge & reasoning

  • General knowledge

    anthropic/claude-sonnet-5-5Leads89%
    DeepSeek-V4.1-Flash57%

  • Logical reasoning

    anthropic/claude-sonnet-5-5Leads90%
    DeepSeek-V4.1-Flash70%

  • Mathematics

    anthropic/claude-sonnet-5-587%
    DeepSeek-V4.1-FlashLeads88%

  • Scientific and technical depth

    anthropic/claude-sonnet-5-5Leads88%
    DeepSeek-V4.1-Flash73%

  • Planning and task decomposition

    anthropic/claude-sonnet-5-5Leads89%
    DeepSeek-V4.1-Flash68%

Coding & tools

  • Code generation

    anthropic/claude-sonnet-5-5Leads83%
    DeepSeek-V4.1-Flash77%

  • Debugging and code review

    anthropic/claude-sonnet-5-5Leads90%
    DeepSeek-V4.1-Flash80%

  • Agentic coding

    anthropic/claude-sonnet-5-5Leads92%
    DeepSeek-V4.1-Flash80%

  • Tool and function calling

    anthropic/claude-sonnet-5-5Leads91%
    DeepSeek-V4.1-Flash66%

  • SQL and query writing

    anthropic/claude-sonnet-5-5Leads89%
    DeepSeek-V4.1-Flash80%

Writing & language

  • Creative writing

    anthropic/claude-sonnet-5-5Leads89%
    DeepSeek-V4.1-Flash49%

  • Professional writing

    anthropic/claude-sonnet-5-5Leads94%
    DeepSeek-V4.1-Flash57%

  • Conversational quality

    anthropic/claude-sonnet-5-5Leads93%
    DeepSeek-V4.1-Flash54%

  • Multilingual ability

    anthropic/claude-sonnet-5-5Leads74%
    DeepSeek-V4.1-Flash69%

  • Translation

    anthropic/claude-sonnet-5-5Leads89%
    DeepSeek-V4.1-Flash63%

  • Summarization

    anthropic/claude-sonnet-5-5Leads92%
    DeepSeek-V4.1-Flash65%

Data & professional work

  • Data analysis

    anthropic/claude-sonnet-5-5Leads90%
    DeepSeek-V4.1-Flash74%

  • Professional domains

    anthropic/claude-sonnet-5-5Leads91%
    DeepSeek-V4.1-Flash60%

  • Information extraction

    anthropic/claude-sonnet-5-5Leads92%
    DeepSeek-V4.1-Flash68%

  • Classification and labeling

    anthropic/claude-sonnet-5-5Leads90%
    DeepSeek-V4.1-Flash70%

  • Long-context handling

    anthropic/claude-sonnet-5-5Leads95%
    DeepSeek-V4.1-Flash80%

Reliability & control

  • Instruction following

    anthropic/claude-sonnet-5-5Leads94%
    DeepSeek-V4.1-Flash61%

  • Structured output

    anthropic/claude-sonnet-5-5Leads97%
    DeepSeek-V4.1-Flash68%

  • Factual accuracy

    anthropic/claude-sonnet-5-5Leads98%
    DeepSeek-V4.1-Flash56%

  • Safety and alignment

    anthropic/claude-sonnet-5-5Leads95%
    DeepSeek-V4.1-Flash44%

  • Steerability

    anthropic/claude-sonnet-5-5Leads95%
    DeepSeek-V4.1-Flash57%

  • Output consistency

    anthropic/claude-sonnet-5-5Leads100%
    DeepSeek-V4.1-Flash61%

Speed, cost & vision

  • Response speed

    anthropic/claude-sonnet-5-524%
    DeepSeek-V4.1-FlashLeads80%

  • Cost efficiency

    anthropic/claude-sonnet-5-531%
    DeepSeek-V4.1-FlashLeads48%

  • Image understanding

    anthropic/claude-sonnet-5-577%
    DeepSeek-V4.1-FlashNo image input

Latest LLM7 statistics

Recent aggregated percentages and response-time metrics from LLM7, not a global model benchmark or traffic disclosure.

Recent stability

anthropic/claude-sonnet-5-5

90.82%

DeepSeek-V4.1-Flash

97.64%

Average response time

anthropic/claude-sonnet-5-5

8,228.61 ms

DeepSeek-V4.1-Flash

4,900.53 ms

P95 API latency

anthropic/claude-sonnet-5-5

60,000 ms

DeepSeek-V4.1-Flash

30,000 ms

Side-by-side trends

Shared charts make the observed differences easier to read. Metrics without enough history stay hidden.

Request success rate

Both models on the same scale

anthropic/claude-sonnet-5-5: 90.7%DeepSeek-V4.1-Flash: 100%
25 Sept21 Oct

Average API latency

Both models on the same scale

anthropic/claude-sonnet-5-5: 7,798 msDeepSeek-V4.1-Flash: 2,735 ms
22 Sept21 Oct

P95 API latency

Both models on the same scale

anthropic/claude-sonnet-5-5: 30,000 msDeepSeek-V4.1-Flash: 10,000 ms
22 Sept21 Oct

Estimate your workload

Published rates are loaded from the pricing API; per-request quotes are billed from actual provider usage.

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Quick take

  • anthropic/claude-sonnet-5-5 supports image input while the other model does not.
  • DeepSeek-V4.1-Flash recorded higher recent LLM7 stability during this period.
  • DeepSeek-V4.1-Flash recorded a lower observed p95 API latency on LLM7 during this period.

Keep exploring

About anthropic/claude-sonnet-5-5About DeepSeek-V4.1-Flashanthropic/claude-sonnet-5-5 vs gemini-3.1-proanthropic/claude-sonnet-5-5 vs L3-8B-Lunaris-v1-Turboanthropic/claude-sonnet-5-5 vs gpt-6.1-solDeepSeek-V4.1-Flash vs gpt-6-solclaude-sonnet-5 vs DeepSeek-V4.1-FlashDeepSeek-V4.1-Flash vs seed-2.0-mini