Which is cheaper, Claude Sonnet 4 or DeepSeek R1?

DeepSeek R1 is cheaper for both input ($0.55/M tokens) and output ($2.19/M tokens), compared to Claude Sonnet 4 at $3.00/$15.00 per million tokens.

Which is faster, Claude Sonnet 4 or DeepSeek R1?

Claude Sonnet 4 is faster at 78 tokens/sec with a TTFT of 320ms, compared to DeepSeek R1 at 45 tokens/sec and 1800ms TTFT.

Which has a bigger context window, Claude Sonnet 4 or DeepSeek R1?

Claude Sonnet 4 has a 200K token context window, which is larger DeepSeek R1's 128K context window.

Which is better for coding, Claude Sonnet 4 or DeepSeek R1?

DeepSeek R1 has a higher coding ELO of 1330 compared to Claude Sonnet 4's 1305, making it the stronger choice for code generation and programming tasks.

Claude Sonnet 4 vs DeepSeek R1: Pricing, Benchmarks & Verdict (2026)

Name: Claude Sonnet 4 vs DeepSeek R1 — Pricing, Benchmarks & Speed Comparison 2026
Creator: LLMversus
License: https://creativecommons.org/licenses/by/4.0/

Pricing verified Apr 20, 2026By LLMversusUpdated June 14, 2026View methodology

⚡ Quick Answer

DeepSeek R1 is significantly cheaper at $0.55/$2.19 per million tokens vs $3.00/$15.00. DeepSeek R1 is stronger for coding with a coding ELO of 1330 vs 1305. Claude Sonnet 4 is faster at 78 tokens/sec vs 45 tokens/sec. DeepSeek R1 ranks higher overall with an Arena ELO of 1310 vs 1280. Claude Sonnet 4 offers a larger 200K context window vs 128K.

Updated: April 20, 2026 · ✓ Pricing verified

Side-by-Side Comparison

Feature	Claude Sonnet 4	DeepSeek R1
Provider	Anthropic	DeepSeek
Input Price / 1M tokens	$3.00	$0.500
Output Price / 1M tokens	$15.00	$2.15
Context Window	200K	128K
Max Output Tokens	64,000	8,192
Arena ELO	1,280	1,310
Coding ELO	1,305	1,330
TTFT (ms)	320	1,800
Tokens/sec	78	45
Multimodal	Yes	No
JSON Mode	Yes	Yes
Function Calling	Yes	No
Vision	Yes	No

When to Use Claude Sonnet 4

Choose Claude Sonnet 4 when you need: best-in-class coding performance, 200k context window, excellent instruction following. It excels at coding, analysis, long-context, agents tasks. Its 200K context window is larger, making it better for long-document processing.

Strengths:

Best-in-class coding performance
200K context window
Excellent instruction following

Best for:

codinganalysislong-contextagents

When to Use DeepSeek R1

Choose DeepSeek R1 when you need: excellent reasoning at a fraction of o3's cost, open-source and self-hostable, top-tier math performance, very competitive with proprietary reasoning models. It excels at reasoning, math, coding, science tasks. It is also the more cost-effective option between the two.

Strengths:

Excellent reasoning at a fraction of o3's cost
Open-source and self-hostable
Top-tier math performance
Very competitive with proprietary reasoning models

Best for:

reasoningmathcodingscience

Claude Sonnet 4 vs DeepSeek R1: Pricing, Benchmarks & Verdict (2026)

Side-by-Side Comparison

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