Claude Sonnet 5.5 vs Gemini 4 Carbon

Prices checked

Gemini 4 Carbon takes 1 of 5 rounds against Claude Sonnet 5.5. Both cost $4 per million tokens to run.

Anthropic

Claude Sonnet 5.5

1M context · tool calling · reads images

$4/M tokens

Anthropic's own price · $1.80 per 1,000 pages

GoogleWins 1 round

Gemini 4 Carbon

1M context · tool calling · reads images

$4/M tokens

Google's own price · $1.80 per 1,000 pages

Maker's price in (lower wins)

$2/M

$2/M

Maker's price out (lower wins)

$10/M

$10/M

Cheapest price (lower wins)

none below the maker

none below the maker

Maker's price, blended (lower wins)

$4/M

$4/M

Cost per 1,000 pages (lower wins)

$1.80

$1.80

Context

1M tokens

1M tokens

Open weights

no

no

Tool calling

yes

yes

Structured output

yes

yes

Reads images

yes

yes

Reasoning

yes

yes

Released

28 Sept 2026

10 Nov 2026

Providers selling it

44

26

Price we measure against

the maker's own

the maker's own

Trains on your prompts (no is better)

no provider to check

no provider to check

Providers selling both · 24

  • NanoGPT$4 / $1.53
  • Cloudflare AI Gateway$4 / $4
  • CrossModel$4 / $4
  • Eden AI$4 / $4
  • FastRouter$4 / $4
  • GitHub Copilot$4 / $4
  • Google$4 / $4
  • Google Vertex AI$4 / $4

Claude Sonnet 5.5, then Gemini 4 Carbon, per million tokens; the 8 cheapest of 24.

Go further

Add a third or fourth model, or change the weighting, in the tool.

Frequently asked

Which is cheaper, Claude Sonnet 5.5 or Gemini 4 Carbon?
Neither: both run at $4 per million tokens, blended 3 in : 1 out, read on 13 Nov 2026.
Where is each one cheapest?
Claude Sonnet 5.5: nobody sells it below the maker's own price with a stated reason, so $4 is the number to beat. Gemini 4 Carbon: nobody sells it below the maker's own price with a stated reason, so $4 is the number to beat.
Can I buy both from one provider?
Yes. 24 providers sell both: NanoGPT, Cloudflare AI Gateway, CrossModel, Eden AI, FastRouter, GitHub Copilot, and more. The cheapest of them for the two together is NanoGPT.
Which holds more context?
Gemini 4 Carbon, at 1M tokens against 1M.

Prices exclude tax, read 13 Nov 2026 from each provider's own catalog. They are per M tokens, blended 3 in : 1 out, and a page is 600 tokens in and 60 out. Bars are scaled to the larger value in each row.

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