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Claude Sonnet 5.5

claude-sonnet1.0M context128k max outputreleased Sep 28, 2026ReasoningTool calling2 subscription plans →

As of Oct 4, 2026, the cheapest Claude Sonnet 5.5 API price is $2 per 1M input tokens (302.AI) and $10 per 1M output tokens (302.AI). Claude Sonnet 5.5 is offered by 23 providers in the claude-sonnet family, reasoning enabled. Anthropic's own rate is $10 per 1M output tokens. It is also included in 2 flat-rate subscription plans, GitHub Copilot Pro from $10/mo.

Cheapest input
$2
Cheapest output
$10
Official (Anthropic)
$10
output per 1M tokens
Providers
23
offering this model
Spread
1.3×
max / min output

API pricing by provider

Metered per-token prices. Cheapest input and output are highlighted; † marks a context-tier surcharge. How prices are ranked.

Claude Sonnet 5.5 API prices by provider in USD per 1M tokens, updated Oct 4, 2026
Provider1M input1M output1M cache read1M cache writeContextChanged
302.AICheapest$2Cheapest$10$0.2$2.51.0M—
Amazon Bedrock$2$10$0.2$2.51.0M—
Amazon Bedrockglobal$2$10$0.2$2.51.0M—
Anthropic$2$10$0.2$2.51.0M—
Azure$2$10$0.2$2.51.0M—
Azure Cognitive Services$2$10$0.2$2.51.0M—
CrossModel$2$10$0.2$2.51.0M—
DigitalOcean$2$10$0.2$2.51.0M—
Eden AI$2$10$0.2$2.51.0M—
Vertex$2$10$0.2$2.51.0M—
Vertex (Anthropic)$2$10$0.2$2.51.0M—
Kilo Gateway$2$10$0.2$2.51.0M—
DevPass (LLM Gateway)$2$10$0.2$2.51.0M—
LLM Gateway$2$10$0.2$2.51.0M—
LLM Gateway$2$10$0.2$2.51.0M—
LLM Gateway$2$10$0.2$2.51.0M—
Merge Gateway$2$10$0.2$2.51.0M—
NanoGPT$2$10$0.2$2.51.0M—
Ofox$2$10$0.2$2.51.0M—
OpenCode Zen$2$10$0.2$2.51.0M—
OpenRouter$2$10$0.2$2.51.0M—
Requesty$2$10$0.2$2.51.0M—
Vercel AI Gateway$2$10$0.2$2.51.0M—
Vivgrid$2$10$0.2$2.51.0M—
Amazon Bedrockeu$2.2$11$0.22$2.751.0M—
Amazon Bedrockus$2.2$11$0.22$2.751.0M—
Requestyeu$2.2$11$0.22$2.751.0M—
Venice AI$2.5$12.5$0.25$3.1251.0Myesterdayout −33.3%

Subscription plans (not per-token)

Billed per month, not per token — never counted as the cheapest offer.

Provider1M input1M outputContext
GitHub Copilotplan$2$101.0M

Claude Sonnet 5.5 pricing FAQ

What is the cheapest Claude Sonnet 5.5 API?

As of Oct 4, 2026, 302.AI has the lowest Claude Sonnet 5.5 output price at $10 per 1M tokens, and 302.AI has the lowest input price at $2 per 1M tokens. Prices are metered per-token rates in USD; free tiers and subscription plans are excluded.

How much does Claude Sonnet 5.5 cost on Anthropic?

Anthropic charges $2 per 1M input tokens and $10 per 1M output tokens for Claude Sonnet 5.5.

How many providers offer Claude Sonnet 5.5?

23 providers list Claude Sonnet 5.5 on Sovyron; 28 of them sell it at a metered per-token price.

Is Claude Sonnet 5.5 free?

No provider in the Sovyron catalog lists a free tier for Claude Sonnet 5.5.

Is Claude Sonnet 5.5 included in a subscription plan?

Yes. 2 flat-rate plan(s) include it; the cheapest is GitHub Copilot Pro at $10/month.

What is the context window of Claude Sonnet 5.5?

Claude Sonnet 5.5 supports a 1.0M-token context window and up to 128k output tokens.