What is the price of Claude Sonnet 5.5?

We do not republish prices we cannot verify. Current per-million-token rates for Sonnet 5.5 live on Anthropic's official pricing page — the only source that stays correct when prices change. Treat any page (including this one) without a live link there as stale by definition.

Is Sonnet 5.5 included in consumer subscription plans?

Anthropic's consumer plans have historically included Claude models under usage limits rather than per-token billing, but which specific versions are included changes with each release. Check your plan's model list in the app settings or on Anthropic's plans page.

Why do price pages for new models disagree?

Because most of them copy each other at different times, and a few invent numbers outright. Price content for hot models is a misinformation hotspot: rates change, tier names get reused, and scraped tables never update. Primary sources only.

How do I compare Sonnet 5.5's price to other models fairly?

Compare per-million-token rates at equal token volumes, input and output separately, using official pages for every model in the comparison. Then weight by your actual traffic mix — a 'cheaper' model on the wrong ratio can still cost more per successful task.

Sonnet 5.5 price

"Sonnet 5.5 price" is the search every buyer runs and the page every content farm fakes. The directory description is simple — "price information for Anthropic's Claude Sonnet 5.5 model" observed — and only six dedicated pages competed for the phrase at capture, most of them thin observed. Here is the uncomfortable truth this page is built on: any fixed number we printed would be wrong within months, and many published ones are wrong today. So this page does something different: it maps where Sonnet 5.5 pricing actually lives, why the copies disagree, and how to verify a rate in under a minute. Labels: vendor claim / observed / analysis.

Where Sonnet 5.5 pricing actually lives

Surface	What it tells you	Freshness
Anthropic's official pricing page	Current per-million-token API rates, input and output, for every tier including Sonnet observed	The source of truth — always current analysis
Your plan settings (consumer app)	Which Claude versions your subscription includes, under plan usage limits observed	Current for your account analysis
Neutral API aggregators	Live listing pages per model; useful cross-check on rates and availability observed	Days-fresh, occasionally stale analysis
Blog price tables	A snapshot of someone's scrape, indeterminate date analysis	Rots silently — verify before trusting analysis

We deliberately print no number in the table above, because the only cell that matters — the current rate — changes without our permission analysis. The companion page, Sonnet 5.5 cost, covers what to do with the official rate once you have it.

Why price pages for new models disagree so much

Pricing content is the misinformation hotspot of every model wave, and the failure modes are predictable analysis:

The scrape cascade. Site A publishes a table at launch; sites B through F copy it over the following weeks; the rate changes once; all six are now wrong, and none will update analysis.
Tier-name reuse. "Sonnet" is a tier, not a product key — a page comparing "Sonnet prices" may mix generations without saying so analysis. Watch for it: our Sonnet 5.5 vs 5 page exists because the same confusion infects capability comparisons.
Input/output conflation. Some tables quote the input rate, some the output rate, few label which. Those are different numbers by design analysis.
Unit confusion. Per-1K vs per-1M tokens is a 1000× error that survives far too long analysis.

The 60-second verification checklist

Open the official pricing page — Anthropic's, for this model. If a page you're reading doesn't link there, treat its numbers as decorative analysis.
Confirm the generation — you want the Sonnet 5.5 row, not "Sonnet" generically analysis.
Read input and output rates separately and note the units (per million tokens) analysis.
Model your month — real traffic mix through our API cost calculator. A rate is trivia; a modeled month is a decision analysis.

Sonnet 5.5 cost — the billing structure behind the rate
GPT-6 Luna price — a priced example from the OpenAI side, with its source labeled
Haiku 5.5 — the lightweight tier's release tracker
Jev vs GPT function calling — API features that change effective cost

Sonnet 5.5 price FAQ

Is there a free way to use Sonnet 5.5?

Consumer plans have historically included current Claude models under usage limits — but plan contents change with releases; check your account's model list for what's included today analysis.

Do prices differ by region or platform?

Third-party platforms and resellers can apply their own margins; the vendor's official rate is the baseline every other price derives from analysis.

Why doesn't this page just list the price?

Because a number without a date is a rumor with formatting. The official page is one click away and always right; this page is the map to it analysis.

How do I know I'm comparing the same generation across vendors?

Match exact version strings, not tier names — "Sonnet 5.5" against a specific OpenAI model version, both pulled from official pages the same day analysis.

This page is descriptive and independent, last reviewed October 8, 2026. Not affiliated with Anthropic. "Claude" and "Sonnet" are trademarks of their respective owners; third-party claims are reported with attribution and not independently verified.