Claude Sonnet 4.6 vs Command R+: Detailed Comparison

Choosing between Claude Sonnet 4.6 (Anthropic) and Command R+ (Cohere) comes down to three things: per-token pricing, context window, and which capability matters most for your workload. Claude Sonnet 4.6 costs $3.00/M input vs $2.50/M for Command R+; context windows are 200K vs 128K tokens. Detailed breakdown below.

Side-by-side specs

SpecClaude Sonnet 4.6Command R+
ProviderAnthropicCohere
Released2026-03-122024-04-04
Input price $3.00/M $2.50/M
Output price $15.00/M $10.00/M
Cached input $0.3000/M
Context window 200K 128K
Max output 64K 4K
Modalities text image text
Tokenizer claude-3 cohere

Capability matrix

CapabilityClaude Sonnet 4.6Command R+
function calling Yes Yes
json mode Yes Yes
vision Yes No
streaming Yes Yes
tool use Yes No
rag No Yes
citations No Yes

Benchmark comparison

Higher is better for all benchmarks shown.

BenchmarkCategoryClaude Sonnet 4.6Command R+Δ
HumanEval coding 92.0
SWE-bench Verified coding 72.5
Aider Polyglot coding 74.0

Per-call cost on typical workloads

Workload (in/out tokens)Claude Sonnet 4.6Command R+Cheaper by
Standard chat (1K / 500) $0.010500 $0.007500 Command R+ by $0.003000
RAG (4K / 500) $0.019500 $0.015000 Command R+ by $0.004500
Long doc (20K / 1K) $0.075000 $0.060000 Command R+ by $0.015000
Very long context (100K / 2K) $0.322500 $0.265000 Command R+ by $0.057500

When to choose Claude Sonnet 4.6 over Command R+

  • Larger context window (200K vs 128K) — relevant when whole documents or long histories must fit in a single call.
  • Supports vision — Command R+ does not.
  • Supports tool use — Command R+ does not.

When to choose Command R+ over Claude Sonnet 4.6

  • Per-token input cost is 17% lower than Claude Sonnet 4.6.
  • Supports rag — Claude Sonnet 4.6 does not.
  • Supports citations — Claude Sonnet 4.6 does not.

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