Head to head

Claude Sonnet 5.5 vs Mistral Medium 3.5

Price, context, inputs and filters. No benchmarks theatre.

Swap sides

Mistral Medium 3.5 costs 1.3× less per message.

Claude Sonnet 5.5 holds 3.8× more context.

Fact

Claude Sonnet 5.5Anthropic

MainstreamChat with Claude Sonnet 5.5

Mistral Medium 3.5Mistral AI

MainstreamChat with Mistral Medium 3.5

Made by

Anthropic

Mistral AI

Content tier

Mainstream

Intelligence

Smart & Cheap

Estimated price per message

~6.11 credits≈ 16 messages for $1

~4.59 credits≈ 21 messages for $1

Context window

1M tokens≈ 1,538 pages of text in one go

262K tokens≈ 403 pages of text in one go

Reads

Text, Images

Writes

Text

Tool use

Yes - search, memory, code and more

Served via

OpenRouter, Unbottled AI

Status

Current

Legacy

A typical message: 16K tokens in, 1.5K out. Short replies cost less. Models served via OpenRouter bill the real provider cost plus our markup, so actual charges vary. 1 credit = $0.01.

Claude Sonnet 5.5 details Mistral Medium 3.5 details