Claude Sonnet 5 vs DeepSeek-V4-Flash-Vision-Exp
Claude Sonnet 5 and DeepSeek-V4-Flash-Vision-Exp are closely matched at 48.4 and 46.3 on the LLM Stats Score. DeepSeek-V4-Flash-Vision-Exp is 12.1x cheaper per token.
Anthropic · DeepSeek · Updated for 2026
Which is better?
Claude Sonnet 5 and DeepSeek-V4-Flash-Vision-Exp are closely matched on the overall LLM Stats Score at 48.4 and 46.3.
In the 1 individual benchmarks reported for both models, DeepSeek-V4-Flash-Vision-Exp wins 1; this is a narrower head-to-head signal than the composite indexes.
On price, DeepSeek-V4-Flash-Vision-Exp is roughly 12.1x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
DeepSeek-V4-Flash-Vision-Exp also accepts a larger context window (1,048,576 input tokens), making it the stronger choice for long documents and large codebases.
Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.
Choose Claude Sonnet 5
- you want predictable pricing at $2.00/M input and $10.00/M output
Choose DeepSeek-V4-Flash-Vision-Exp
- you value its reported benchmark strengths — it wins 1 of 1 exact shared results
- cost matters — it's about 12.1x 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 Aug 2026
At a glance
The differences that matter most.
Capability indexes
Additional strengths measured across groups of related public benchmarks
Individual benchmarks
23 reported for Claude Sonnet 5 · 7 for DeepSeek-V4-Flash-Vision-Exp
Claude Sonnet 5 outperforms in 0 benchmarks, while DeepSeek-V4-Flash-Vision-Exp is better at 1 benchmark (AutomationBench).
DeepSeek-V4-Flash-Vision-Exp significantly outperforms across most benchmarks.
Human preference
Blind head-to-head votes and playground preference scores
Pricing Analysis
Price comparison per million tokens
For input processing, Claude Sonnet 5 ($2.00/1M tokens) is 9.1x more expensive than DeepSeek-V4-Flash-Vision-Exp ($0.22/1M tokens).
For output processing, Claude Sonnet 5 ($10.00/1M tokens) is 15.2x more expensive than DeepSeek-V4-Flash-Vision-Exp ($0.66/1M tokens).
In conclusion, Claude Sonnet 5 is more expensive than DeepSeek-V4-Flash-Vision-Exp.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
DeepSeek-V4-Flash-Vision-Exp accepts 1,048,576 input tokens compared to Claude Sonnet 5's 1,000,000 tokens. DeepSeek-V4-Flash-Vision-Exp can generate longer responses up to 393,216 tokens, while Claude Sonnet 5 is limited to 64,000 tokens.
Input capabilities
Documented input modalities across available providers
Both Claude Sonnet 5 and DeepSeek-V4-Flash-Vision-Exp support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
Claude Sonnet 5
DeepSeek-V4-Flash-Vision-Exp
Release Timeline
When each model was launched
Claude Sonnet 5 was released on 2026-06-30, while DeepSeek-V4-Flash-Vision-Exp was released on 2026-08-21.
DeepSeek-V4-Flash-Vision-Exp is 2 months newer than Claude Sonnet 5.
Jun 30, 2026
2 months ago
Aug 21, 2026
2 weeks ago
1mo newerKnowledge Cutoff
When training data ends
Neither model specifies a knowledge cutoff date.
Unable to compare the recency of their training data.
Provider Availability
Claude Sonnet 5 is available from Anthropic, DeepInfra. DeepSeek-V4-Flash-Vision-Exp is available from DeepSeek, DeepInfra.
Claude Sonnet 5
DeepSeek-V4-Flash-Vision-Exp
Outputs Comparison
Judge for yourself.
Run your own prompts against Claude Sonnet 5 and DeepSeek-V4-Flash-Vision-Exp side-by-side, then vote on the output you prefer.
FAQ
Common questions about Claude Sonnet 5 vs DeepSeek-V4-Flash-Vision-Exp.