token.app › Compare › Claude Sonnet 5 (batch) vs Mercury 3

Claude Sonnet 5 (batch) vs Mercury 3

Mercury 3 is 12× cheaper per token on a blended 3:1 basis.

Head to head
Blended price uses a 3:1 input:output mix
Claude Sonnet 5 (batch)Mercury 3
ProviderAnthropicInception
Input $/1M$1.00$0.100
Output $/1M$5.00$0.350
Blended $/1M$2.00$0.163
Context window1M1M
Max output128K131K
ReleasedJun 2026Oct 2026
LicenceProprietaryProprietary
Choose Claude Sonnet 5 (batch) if…
  • No clear advantage on the data we hold.
Choose Mercury 3 if…
  • Costs less per token — $0.163 vs $2.00 blended
  • Newer model (released Oct 2026)
FAQ
Which is better, Claude Sonnet 5 (batch) or Mercury 3?
We do not hold independently-run benchmark scores covering both Claude Sonnet 5 (batch) and Mercury 3, so we make no quality claim. Their pricing and specifications are compared on this page.
Is Claude Sonnet 5 (batch) cheaper than Mercury 3?
Mercury 3 is cheaper: $0.163 versus $2.00 per million tokens blended at 3:1 input:output. Input alone: $1.00 vs $0.100. Output alone: $5.00 vs $0.350.
What context windows do Claude Sonnet 5 (batch) and Mercury 3 have?
Claude Sonnet 5 (batch): 1,000,000 tokens. Mercury 3: 1,000,000 tokens.
Who makes Claude Sonnet 5 (batch) and Mercury 3?
Claude Sonnet 5 (batch) is made by Anthropic. Mercury 3 is made by Inception.
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