Which is cheaper, DeepSeek R2 or Claude 4.6 Sonnet?

DeepSeek R2 is cheaper at the input + output rate combined: $2.75 versus $18.00 per million tokens.

Which has higher quality, DeepSeek R2 or Claude 4.6 Sonnet?

Claude 4.6 Sonnet has the higher AA Intelligence Index score: 89 versus 86.

Can I switch between DeepSeek R2 and Claude 4.6 Sonnet via one API?

Both DeepSeek R2 and Claude 4.6 Sonnet are accessible through OpenRouter's unified gateway, which lets you switch models with one API key. Phase 2 of AIpricly will add scenario-routed automatic primary + fallback chains.

DeepSeek R2 vs Claude 4.6 Sonnet

Side-by-side pricing, capabilities, real-world cost across common scenarios, and our editorial pick.

Add a modelUp to 4 models can be compared

all prices in USD per 1M tokens

OVERALL WINNER

DeepSeek R2

DeepSeek · released 2026-02-15

Quality (AA Index)86

Input price$0.55

Output price$2.20

Context128K

Throughput110 tok/s

P50 latency1.2s

View full pricing

Claude 4.6 Sonnet

Anthropic · released 2026-04-08

Quality (AA Index)89

Input price$3.00

Output price$15.00

Context200K

Throughput85 tok/s

P50 latency1.1s

View full pricing

Try DeepSeek R2 on OpenRouter Try Claude 4.6 Sonnet on OpenRouter

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Head-to-head specs

Green column = winner per metric

Metric	DeepSeek R2	Claude 4.6 Sonnet	Verdict
Input price /1M tokens	$0.55	$3.00	DeepSeek R2 −82%
Output price /1M tokens	$2.20	$15.00	DeepSeek R2 −85%
Context window max input length	128K	200K	Claude 4.6 Sonnet +1.6×
AA Quality AA Intelligence Index (0–100)	86	89	Claude 4.6 Sonnet +3pt
Arena Elo LMArena human-pref Elo (800–2000)	—	—	Tied
Throughput tokens per second	110	85	DeepSeek R2 +29%
P50 latency first token	1.2s	1.1s	Claude 4.6 Sonnet −8%
Vision multimodal	—
Function calling tool use			Tied
Reasoning mode chain-of-thought			Tied

Monthly cost across common scenarios

Default usage assumptions

Scenario	DeepSeek R2	Claude 4.6 Sonnet
customer support 1000K req · 600/180 tok	$726	$4.5K
chat with docs 300K req · 4000/300 tok	$858	$5.0K
code generation 500K req · 2000/500 tok	$1.1K	$6.8K
voice assistant 600K req · 800/200 tok	$528	$3.2K

Our pick

For most workloads, choose DeepSeek R2.

82% cheaper input price, which compounds at scale
29% faster throughput — matters for streaming UX and voice agents

Choose Claude 4.6 Sonnet instead if: Strongest non-OpenAI option for nuanced writing and code review; pricier than DeepSeek but more reliable refusal patterns for regulated industries.

Read our deep analysis

Why pick? Use both with smart routing

Phase 2 · gateway with fallback chain

Set DeepSeek R2 as primary, Claude 4.6 Sonnet as fallback. One key, one bill, automatic failover when DeepSeek R2 errors.

PHASE 2 PREVIEW · gateway not live yetThis endpoint does not exist yet. The gateway is in Phase 2 — what you see below is a design preview of the planned interface, not a live API. We will email subscribers when it launches.

Preview the planned API call

$ curl https://api.aipricly.com/v1/chat/completions \
  -H "Authorization: Bearer $AIPC_KEY" \
  -d '{
    "routing": {
      "primary": "deepseek/deepseek-r2",
      "fallback": ["anthropic/claude-4-6-sonnet"]
    },
    "messages": [{"role": "user", "content": "..."}]
  }'