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ModelsAnthropicClaude Sonnet 4.5

Claude Sonnet 4.5

Retiring Nov 30: The model will be withdrawn by its lab or by every seller listing it · announced on platform.claude.com · read on Oct 31, 2026 (opens in a new tab)
anthropic/claude-sonnet-4.5200k context Compare →
MedianThe median blended price among comparable offers: one price per provider (its cheapest route), standard tier, current prices only. Priority tiers and prices converted from points are not counted.
$6.00
Most expensiveThe highest blended price among comparable offers: one price per provider (its cheapest route), standard tier, current prices only. Priority tiers and prices converted from points are not counted.
$6.60
Offers
54
Providers
22

Cheapest right now

Anthropic

The provider's published policy: prompts are not used for training.

200k

$6.00 blended / 1M tokens

No change7D
in
$3.00
out
$15.00
Cached input
$0.30
See pricing See pricing at Anthropic (opens in a new tab)via Anthropic

Public leaderboards

  • Text Arena, style controlThe series the source publishes by default for text since 16 May 2025: ranks corrected for the style of the answers (style control). #58 of 419Best rank in the source's rank spread, 58th to 80th, given the confidence intervals of all ranked models. 67th by score. 1,456 1,454 to 1,459Arena Score · 83,892 votes listed as “Claude Sonnet 4.5 (High, 32K, 20250929)”
  • Text Arena, style controlThe series the source publishes by default for text since 16 May 2025: ranks corrected for the style of the answers (style control). #59 of 419Best rank in the source's rank spread, 59th to 84th, given the confidence intervals of all ranked models. 73rd by score. 1,455 1,452 to 1,458Arena Score · 82,621 votes listed as “Claude Sonnet 4.5 (20250929)”
  • Code Arena (WebDev)The Code Arena ranking (WebDev). The source publishes no style-corrected series (as read on 9 October 2026). #93 of 152Best rank in the source's rank spread, 93rd to 110th, given the confidence intervals of all ranked models. 105th by score. 1,394 1,386 to 1,401Arena Score · 13,213 votes listed as “Claude Sonnet 4.5 (High, 32K, 20250929)”
  • Code Arena (WebDev)The Code Arena ranking (WebDev). The source publishes no style-corrected series (as read on 9 October 2026). #100 of 152Best rank in the source's rank spread, 100th to 113th, given the confidence intervals of all ranked models. 108th by score. 1,385 1,378 to 1,392Arena Score · 15,679 votes listed as “Claude Sonnet 4.5 (20250929)”

Source: Arena (opens in a new tab) · Data under the CC BY 4.0 license (creativecommons.org/licenses/by/4.0) · CC BY 4.0 (opens in a new tab) · scores and ranks as published on 28 Oct 2026; the presentation is ours

Claude Sonnet 4.5 costs from $6.00 per million tokens (at a 3:1 input:output mix): the lowest current price, at 13 providers, checked on ; 54 offers are listed.

Listed offers, by price

Comparable offersOther offersSolid steps are comparable offers; dashed steps are the other offers, which are not counted in cheapest, median or most expensive.Official list price

Offers not counted in cheapest, median or most expensive (31)

  • $5.15 · Poe via Poe · price converted from points
  • $6.00 · Cortecs via Cortecs · cannot be designated the cheapest
  • $6.00 · Anthropic via Eden AI · cannot be designated the cheapest
  • $6.00 · Anthropic via Kilo Gateway · cannot be designated the cheapest
  • $6.00 · Anthropic via LLM API · cannot be designated the cheapest
  • $6.00 · Amazon Bedrock via Eden AI · cannot be designated the cheapest
  • $6.00 · Amazon Bedrock via Kilo Gateway · cannot be designated the cheapest
  • $6.00 · Amazon Bedrock via LLM API · cannot be designated the cheapest
  • $6.00 · Azure via Kilo Gateway · cannot be designated the cheapest
  • $6.00 · Claude Platform on AWS via Kilo Gateway · cannot be designated the cheapest
  • $6.00 · Google AI Studio via Kilo Gateway · cannot be designated the cheapest
  • $6.00 · Google Vertex via Eden AI · cannot be designated the cheapest
  • $6.00 · Abacus RouteLLM via Abacus RouteLLM · cannot be designated the cheapest
  • $6.00 · FastRouter via FastRouter · cannot be designated the cheapest
  • $6.00 · Glama via Glama · cannot be designated the cheapest
  • $6.00 · Martian via Martian · cannot be designated the cheapest
  • $6.00 · Nous Portal via Nous Portal · cannot be designated the cheapest
  • $6.00 · Anthropic via LLM Gateway · another route of the same provider
  • $6.00 · Anthropic via Requesty · another route of the same provider
  • $6.00 · Amazon Bedrock via Requesty · another route of the same provider
  • $6.00 · Google Vertex via Requesty · another route of the same provider
  • $6.00 · Anthropic via OpenRouter · another route of the same provider
  • $6.00 · Amazon Bedrock via OpenRouter · another route of the same provider
  • $6.31 · ShengSuanYun via ShengSuanYun · cannot be designated the cheapest
  • $6.60 · Amazon Bedrock via Eden AI · cannot be designated the cheapest
  • $6.60 · Amazon Bedrock via Eden AI · cannot be designated the cheapest
  • $6.60 · Amazon Bedrock via Kilo Gateway · cannot be designated the cheapest
  • $6.60 · Google AI Studio via Kilo Gateway · cannot be designated the cheapest
  • $6.60 · Google Vertex via Eden AI · cannot be designated the cheapest
  • $6.60 · Google Vertex via Eden AI · cannot be designated the cheapest
  • $6.60 · Amazon Bedrock via OpenRouter · another route of the same provider

Price historyThe cheapest offer each day, against the lab's official list price when it publishes one. Each day at 00:00 UTC, the offer the API would have selected as the cheapest, with the same exclusions as /cheapest. Blended price, promotions included.

Cheapest offer and official list price, by day, 30 days
DayCheapest offerOfficial list price
2026-10-02$6.00, Abacus RouteLLM$6.00
2026-10-03$6.00, Abacus RouteLLM$6.00
2026-10-04$6.00, Abacus RouteLLM$6.00
2026-10-05$6.00, Abacus RouteLLM$6.00
2026-10-06$6.00, Anthropic$6.00
2026-10-07$6.00, Anthropic$6.00
2026-10-08$6.00, Cortecs$6.00
2026-10-09$6.00, Anthropic$6.00
2026-10-10$6.00, Anthropic$6.00
2026-10-11$6.00, Anthropic$6.00
2026-10-12$6.00, Anthropic$6.00
2026-10-13$6.00, Anthropic$6.00
2026-10-14$6.00, Anthropic$6.00
2026-10-15$6.00, Anthropic$6.00
2026-10-16$6.00, Anthropic$6.00
2026-10-17$6.00, Anthropic$6.00
2026-10-18$6.00, Anthropic$6.00
2026-10-19$6.00, Anthropic$6.00
2026-10-20$6.00, Anthropic$6.00
2026-10-21$6.00, Anthropic$6.00
2026-10-22$6.00, Anthropic$6.00
2026-10-23$6.00, Anthropic$6.00
2026-10-24$6.00, Anthropic$6.00
2026-10-25$6.00, Anthropic$6.00
2026-10-26$6.00, Anthropic$6.00
2026-10-27$6.00, Anthropic$6.00
2026-10-28$6.00, Anthropic$6.00
2026-10-29$6.00, Anthropic$6.00
2026-10-30$6.00, Anthropic$6.00
2026-10-31$6.00, Anthropic$6.00

Cheapest offerOfficial list price

Offers

The 25 cheapest of 54 offers

Offers for Claude Sonnet 4.5, one row per offer, sorted by blended price.
RankProvider · viaYou buy access through an aggregator: one account and one API that forward your requests to other providers. "Via" names the aggregator; the price is the one it charges you. When "via" says "hosted API", no aggregator is involved: the model belongs to a lab and another provider sells it.Input $/1MOutput $/1MBlended $/1MA single price that mixes input and output: 3 input tokens for 1 output token, per million tokens. It makes offers easy to rank; your real cost depends on your own mix. ContextThe maximum amount of text, counted in tokens, the model can take in and write in a single request. Past this limit, the request is refused or cut.ConditionsWhat a provider says about how it handles your data and who can sign up: training on prompts, processing region, sign-up requirements. Each comes from the provider's published documents; when nothing is published, it stays unknown.SignalsOffer
1 Poe 2.58 12.88 5.15 197k Unverified. No public page for this offer: listed, not designated cheapestBelow the lab's list price: Resold below the lab's list price (−14% vs lab list price), without a declared discount.priced in points: Converted from points or credits: the amount paid depends on how points are bought.
No public offer page
2 Cortecs 3.00 14.99 6.00 200k worldwide Unverified. No public page for this offer: listed, not designated cheapest
: Cortecs (opens in a new tab). No public price page for this model
3 Anthropic 3.00 15.00 6.00 200k
See pricing at Anthropic (opens in a new tab)
4 Anthropicvia Eden AI 3.00 15.00 6.00 1M Unverified. No public page for this offer: listed, not designated cheapest
: Eden AI (opens in a new tab). No public price page for this model
5 Anthropicvia Kilo Gateway 3.00 15.00 6.00 1M Unverified. The source page shows one price per model, not this seller's: listed, not designated cheapest
Go to offer at Kilo Gateway (opens in a new tab)
6 Anthropicvia LLM API 3.00 15.00 6.00 – Unconfirmed. Last checked 18 October 2026: the last published value, not a confirmed one Unverified. The source page shows one price per model, not this seller's: listed, not designated cheapest
See pricing at LLM API (opens in a new tab)
7 Amazon Bedrockvia Eden AI 3.00 15.00 6.00 200k Unverified. No public page for this offer: listed, not designated cheapest
: Eden AI (opens in a new tab). No public price page for this model
8 Amazon Bedrockvia Kilo Gateway 3.00 15.00 6.00 1M Unverified. The source page shows one price per model, not this seller's: listed, not designated cheapest
Go to offer at Kilo Gateway (opens in a new tab)
9 Amazon Bedrockvia LLM API 3.00 15.00 6.00 – Unconfirmed. Last checked 18 October 2026: the last published value, not a confirmed one Unverified. The source page shows one price per model, not this seller's: listed, not designated cheapest
See pricing at LLM API (opens in a new tab)
10 AtlasCloudhosted APISold by a provider other than the lab that made the model. 3.00 15.00 6.00 200k
See pricing at AtlasCloud (opens in a new tab)
11 Azurevia Kilo Gateway 3.00 15.00 6.00 200k Unverified. The source page shows one price per model, not this seller's: listed, not designated cheapest
Go to offer at Kilo Gateway (opens in a new tab)
12 Claude Platform on AWSvia Kilo Gateway 3.00 15.00 6.00 1M Unverified. The source page shows one price per model, not this seller's: listed, not designated cheapest
Go to offer at Kilo Gateway (opens in a new tab)
13 Google AI Studiovia Kilo Gateway 3.00 15.00 6.00 1M Unverified. The source page shows one price per model, not this seller's: listed, not designated cheapest
Go to offer at Kilo Gateway (opens in a new tab)
14 Google Vertexvia Eden AI 3.00 15.00 6.00 1M Unverified. No public page for this offer: listed, not designated cheapest
: Eden AI (opens in a new tab). No public price page for this model
15 NEAR AIhosted APISold by a provider other than the lab that made the model. 3.00 15.00 6.00 200k
See pricing at NEAR AI (opens in a new tab)
16 Abacus RouteLLM 3.00 15.00 6.00 200k United States Unverified. No public page for this offer: listed, not designated cheapest
: Abacus RouteLLM (opens in a new tab). No public price page for this model
17 FastRouter 3.00 15.00 6.00 200k Unverified. Neither seller nor price found on its page for 72 hours: listed, not designated cheapest
Go to offer at FastRouter (opens in a new tab)
18 Glama 3.00 15.00 6.00 1M Unverified. No public page for this offer: listed, not designated cheapest
: Glama (opens in a new tab). No public price page for this model
19 Martian 3.00 15.00 6.00 – worldwide Unverified. Neither seller nor price found on its page for 72 hours: listed, not designated cheapest
See pricing at Martian (opens in a new tab)
20 NanoGPT 3.00 15.00 6.00 200k Thinking: Thinking: a mode of the model, not its standard offer. Never designated cheapest while a standard offer exists
Go to offer at NanoGPT (opens in a new tab)
21 Neosantara 3.00 15.00 6.00 200k Singapore, Indonesia, United States
See pricing at Neosantara (opens in a new tab)
22 Nous Portal 3.00 15.00 6.00 1M Unverified. Neither seller nor price found on its page for 72 hours: listed, not designated cheapest
See pricing at Nous Portal (opens in a new tab)
23 RedPill 3.00 15.00 6.00 1M
Go to offer at RedPill (opens in a new tab)
24 Vercel AI Gateway 3.00 15.00 6.00 –
Go to offer at Vercel AI Gateway (opens in a new tab)
25 ZenMux 3.00 15.00 6.00 1M prompt up to 200K (199,999) tokens: up to 200K (199,999): $3.00 / $15.00; above that: $6.00 / $22.50 (Input / Output, per million tokens)
Go to offer at ZenMux (opens in a new tab)

No training on promptsPrompts may be used for trainingTraining terms not published

backend not named. The router bills this price itself without naming who serves the model.

Show all 54 offers

1 flex or batch offer hidden (lower priority, variable latency).

Blended = (3 × input + output) / 4, per million tokens. Prices in USD, converted at the ECB rate when the provider bills in another currency.

Method

Monthly cost for your workload

Computed by the API for the three cheapest offers, per 30-day month.
  1. Anthropic$405.00per month
  2. AtlasCloud$405.00per month+$0.00 vs the cheapest
  3. NEAR AI$405.00per month+$0.00 vs the cheapest

Compare Claude Sonnet 4.5 with

Related models

More from Anthropic

All Anthropic models

Same index family

Use this data

The index is queryable. The API is free to use.
Free API
curl https://api.inferindex.dev/cheapest?model=anthropic/claude-sonnet-4.5
MCP server
claude mcp add --transport http inferindex https://mcp.inferindex.dev/mcp

Also works in Cursor and Codex: see the MCP page.