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Claude Sonnet 4.0 vs DeepSeek V4 Flash

Compare Claude Sonnet 4.0 from Anthropic and DeepSeek V4 Flash from DeepSeek on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the AIHubMix API.

AnthropicClaude Sonnet 4.0DeepSeekDeepSeek V4 Flash
+ Add model · 2/4
Anthropic logo
Claude Sonnet 4.0
Anthropic · text, image → text

Claude Sonnet 4 is a significant upgrade to Sonnet 3.7, delivering superior performance in coding and reasoning with enhanced precision and control. Achieving a state-of-the-art 72.7% on SWE-bench, the model expertly balances advanced capability with computational efficiency. Key improvements include more reliable codebase navigation and complex instruction following, making it ideal for a wide range of applications, from routine coding to complex software development projects.

Input$3.3 /M
Output$16.5 /M
Details
DeepSeek logo
DeepSeek V4 Flash
DeepSeek · text → text

(This model currently points to the older 0423 version; if you need to request the latest version, you can choose the model deepseek-v4-flash-0731)DeepSeek-V4 features an ultra-long context of one million characters and achieves leading performance domestically and in the open-source domain in agent capabilities, world knowledge, and reasoning.

Input$0.142 /M
Output$0.284 /M
Cache read$0.0284 /M
Details

Pricing & Specifications

Prices are per million tokens. Time to First Token and throughput are rolling averages measured on AIHubMix.

Claude Sonnet 4.0
DeepSeek V4 Flash
Input /M
$3.3
$0.142
Output /M
$16.5
$0.284
Cache read /M
-
$0.0284
Context length
1,000,000
1,000,000
Max output
64,000
384,000
Time to First Token
2.3 s
1.0 s
Throughput
58.5 tok/s
66.5 tok/s
Modalities
textimage
text
Supported Parameters
thinkingtoolsfunction callingstructured outputs
toolsfunction callingstructured outputsthinking
API Formats
chat_completions · claude_api
Released
-
April 24, 2026

Promotional prices show the discounted rate; see each model page for promotion windows.

Activity Past 30 Days

Daily traffic served through AIHubMix — how demand for each model is trending.

claude-sonnet-4-0deepseek-v4-flash

Tokens / day

-

Requests / day

-

Performance Past 3 Days

Measured on real AIHubMix traffic, hourly buckets. Gaps mean no traffic in that hour.

claude-sonnet-4-0deepseek-v4-flash

Throughput (tok/s)

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TTFT (s)

-

Uptime (%)

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LMArena Benchmarks

LMArena ratings by capability (Bradley-Terry, commonly called Elo). Higher is better.

Text
claude-sonnet-4-0deepseek-v4-flash
1360140014401480
Overall
13891436
Coding
14491483
Math
13881426
Hard prompts
14181459
Instruction following
13931428
Multi-turn
14081452
Creative writing
13841408
Longer query
14261448
Chinese
14071473
English
13971445

Source: LMArena (arena.ai) leaderboard, imported by AIHubMix. Models without published ratings are omitted per chart.

Cost calculator

Estimate your monthly bill for the same workload on each model.

DeepSeek V4 Flash
$12.78 /mo
Claude Sonnet 4.0
$446 /mo

Monthly = daily × 30. Discounted rates applied where a promotion is active.

FAQ

Which is cheaper: Claude Sonnet 4.0, DeepSeek V4 Flash?

DeepSeek V4 Flash: $0.284/M output tokens; Claude Sonnet 4.0: $16.5/M. Use the cost calculator above to estimate your own workload.

How do their coding arena scores compare?

DeepSeek V4 Flash: 1483; Claude Sonnet 4.0: 1449 (LMArena coding leaderboard).

Which responds faster?

DeepSeek V4 Flash: 1.0s time to first token measured on AIHubMix; see the live performance charts above for how each model behaves across the day.

How large is each context window?

Claude Sonnet 4.0 accepts 1,000,000 and DeepSeek V4 Flash accepts 1,000,000 input tokens. Maximum output per request is 64,000 tokens on Claude Sonnet 4.0 and 384,000 tokens on DeepSeek V4 Flash.

Which one generates tokens faster?

DeepSeek V4 Flash at 66.5 tok/s and Claude Sonnet 4.0 at 58.5 tok/s, measured as output throughput on AIHubMix — a separate metric from time to first token.

What inputs and capabilities does each model support?

Claude Sonnet 4.0 accepts text and image input and supports thinking, tool calling, function calling and structured outputs; DeepSeek V4 Flash accepts text input and supports tool calling, function calling, structured outputs and thinking.

Can I call Claude Sonnet 4.0 and DeepSeek V4 Flash with the same API key?

Yes. AIHubMix serves every model on this page behind one OpenAI-compatible endpoint, so switching between them is a one-line change to the model field — no second account, key or SDK.

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