AA output speedVerified
135 t/s
Median output tokens/s (1k prompt, default provider)
Models / Anthropic
Claude Sonnet 5.5
Claude Sonnet · Released 2026-09-28
Anthropic's 28 Sep 2026 Sonnet. API list $2 / $10 per 1M tokens, 1M context, 128K output. Text and image in, text out. Reliable knowledge cutoff June 2026. No AA or Vals ledger row on this page.
Current Claude Sonnet line for everyday coding, documents, and fast iteration on the Claude API, Claude apps, and major clouds.
Composite—
Context1M
Input / 1M$2.0
Output / 1M$10
Knowledge cutoffJun 2026
Output speed135 t/s
Statusflagship
Not enough families covered yet.Add more benchmark rows for Claude Sonnet 5.5 to see the family profile.
Editor's note
Recorded from the 28 Sep 2026 launch page and the Claude Platform overview (1M context, 128K output, June 2026 cutoff). Vendor eval tables stay off the ledger. Haiku 5.5 is a separate page. Editorial depth still needs a desk pass.Benchmark placements
Per-benchmark positions
Where Claude Sonnet 5.5 places on each public benchmark source that publishes a row. Rank counts every model with a latest row in the same test — not a universal quality score.
| Benchmark | Family | Rank | Score | Source | Date |
|---|---|---|---|---|---|
| AA output speed | Performance | #34/ 195 | Artificial Analysis | 2026-10-12 |
Family context
Strongest rows in each family
The three highest-scoring models with pages in each capability family. Where Claude Sonnet 5.5 shows up, it's highlighted.
Reasoning
- 196
- 295
- 395
Math
- 152
- 252
- 350
Long context
- 189
- 286
- 385
Newest receipts
1 recentLast 120 days
Benchmark rows added to the public ledger for Claude Sonnet 5.5 in the last 120 days. Older rows live in the full table below.
| Benchmark | Family | Score | Source | Days ago |
|---|---|---|---|---|
| AA output speed | Performance | 135 t/s | Artificial Analysis | 10 |
Family coverage
Best score per family
A high composite that hides a weak family is a trap. These bars surface the families where this model hasn't been publicly tested, and where it leads.
No family coverage yet.
Price vs. performance
Where Claude Sonnet 5.5 sits on the scatter
Hover any dot for name, score, and input price. Keyboard: tab through the top twelve, or use the ranking below.
AnthropicOpenAIGoogleAlibabaMetaZhipuxAIDeepSeekMiniMaxXiaomiMoonshotOtherMeituanMistralNVIDIACohere
Full benchmark ledger
Every catalog benchmark for Claude Sonnet 5.5. Scores link to the original source; gaps mean no public row exists yet.
1 of 13 catalog benchmarks have a sourced row for Claude Sonnet 5.5.
Performance
Changelog
Version history
- Public on the Claude API, Claude apps, and AWS, Google Cloud, and Microsoft Azure.
Sources
Where the numbers come from
- Anthropic Claude Sonnet 5.5 announcement· checked 2026-09-28
- Claude Platform Sonnet 5.5 overview· checked 2026-09-28
- Claude Platform pricing· checked 2026-09-28
Questions this model page answers
Every answer below is assembled from the dated fields on this page. Nothing is written separately for search.
What is Claude Sonnet 5.5?
Claude Sonnet 5.5 is a Anthropic model: Anthropic's 28 Sep 2026 Sonnet. API list $2 / $10 per 1M tokens, 1M context, 128K output. Text and image in, text out. Reliable knowledge cutoff June 2026. No AA or Vals ledger row on this page.
What is Claude Sonnet 5.5 for?
Current Claude Sonnet line for everyday coding, documents, and fast iteration on the Claude API, Claude apps, and major clouds.
What does Claude Sonnet 5.5 cost?
Claude Sonnet 5.5 lists $2.0 input and $10 output per 1M tokens. Pricing last checked 2026-09-28.
How large is the Claude Sonnet 5.5 context window?
Claude Sonnet 5.5 publishes a 1M token context window.
What is the VerdictPal status of Claude Sonnet 5.5?
Claude Sonnet 5.5 carries Flagship status on the model atlas.
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