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AI Launch Profile

Claude Sonnet 5.5

Claude Sonnet 5.5 is released through the Claude API and supported partner platforms. Access: Claude API and partner-platform release.

Read official source
Claude Sonnet 5.5: near-Opus scores at Sonnet price. $2 / $10 per million tokens, 1M context, 70.6% Terminal-Bench 4.0, 56 on the Artificial Analysis Intelligence Index

At a glance

Launch Snapshot

Company
Anthropic
Launch date
September 28, 2026
Launch type
Model Release
Category
Foundation Models
Audience
Developers
Pricing
Price not enumerated in this tracker backfill. Consult the official source and current plan or API terms before budgeting; access and subscription allowances are separate.
Free plan
Not publicly confirmed
API
Yes
Open weights/source
Not publicly confirmed

Launch Context

Use these links to move from this record into the broader Launch Intelligence database.

Launch Intelligence hub Today's launches This week's launches More: Foundation Models More: Developers More: Model Release

Verification & Sources

Evidence state
Source-verified
Source links
2
Freshness
Checked October 1, 2026
Last verified
October 1, 2026
Last updated
October 2, 2026
What this evidence state means
Definition
The stated claim was checked against a named primary or authoritative source. This does not mean Kingy tested the product.
Required provenance
At least one public, named primary or authoritative source that directly supports the claim.
Owner
Kingy editorial reviewer
Freshness rule
Recheck within 30 days and after a material product, price, access, or source change.
Disputes and corrections
Use “Suggest a correction” on the record. Kingy editorial reviews the cited evidence, records material corrections, and changes or removes the state when it is not supported.

Key source checks

Official site Source 2
Suggest a correction

Form submissions, correction notes, score details, URLs, and analytics events may be stored for editorial review, spam prevention, product improvement, and follow-up. Do not submit secrets, unreleased financials, private customer data, or regulated personal data through these forms.

Creator Coverage Next Steps

This launch has signals that may support demos, reviews, creator education, founder storytelling, or practical product explainers.

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Kingy AI Take

Check the Sonnet 5.5 model identifier and availability on your provider. Run your existing workload before moving an integration.

Who it is for

Users evaluating Claude Sonnet 5.5 within the stated access limits.

What feels promising

Claude Sonnet 5.5 is released through the Claude API and supported partner platforms.

What feels unproven

Claude API and partner-platform release. Source review completed October 1, 2026. No new hands-on test, paid API request, independent benchmark or account-specific access check was performed for this backfill. Vendor results remain attributed. Existing dated tests and relationship disclosures remain in linked Kingy coverage. Commercial disclosure: On October 2, 2026, Curtis confirmed that Kingy had no client or sponsorship relationship, affiliate compensation or supplied access from Anthropic.

Source-backed record

Evidence sources

Official site platform.claude.com Source kingy.ai

Related Kingy Links

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