Who sells Claude Sonnet 4.5 cheapest?

Poe, at $2.58 in and $12.88 out per million tokens, read on 16 Sept 2026. A consumer subscription with an API bolted on. Points convert to dollars, so the rate moves when the conversion does.

Is Claude Sonnet 4.5 open weights?

No. Anthropic keeps the weights, so every price on this page is Anthropic's own or a resale of it. A price below list here needs a published reason, or it is listed and never ranked.

How much context does Claude Sonnet 4.5 hold?

1,000,000 tokens in one call, which is about 1M, and it can call your own functions.

How does Claude Sonnet 4.5 compare with the rest of the market?

At $24 per million tokens, Anthropic's price is 576% above the $3.55 median across the 337 text models we track.

Claude Sonnet 4.5 pricing.

prices as of 16 Sept 2026 · 39 providers · 40 prices

Anthropic's Claude Sonnet 4.5 holds 1M tokens of context, reads images as well as text and has a reasoning mode. Closed weights: only Anthropic and its licensed partners run it, so every other price below resells the same service.

Claude Sonnet 4.5 costs $3 in and $15 out per million tokens from Anthropic; the cheapest price we can explain is $20.61 at Poe, checked 16 Sept 2026.

tool callingreads imagesreasoningstructured output1M contextreleased 29 Sept 2025

Compare withvs Claude Sonnet 4 vs Claude Sonnet 4.6 vs GPT-5.4 or any model →

Anthropic list price

$24/M tokens

$3 in · $15 out

read 16 Sept 2026 · 576% above the market median

Cheapest price we can explain

$20.61/M tokens

$2.58 in · $12.88 out · 14% under list

Poe

View at Poe ↗

read 16 Sept 2026

What it costs for your work

how manypages a month

Anthropic list price

$2.70a month

cheapest we can explain · Poe

$2.32a month

difference

$0.382saved

A page is about 600 tokens in and 60 out, a support reply 200 in and 300 out, an email 150 in and 250 out. Nothing else is counted: no cache discount, no batch rate, no free tier.

Every provider selling Claude Sonnet 4.5

Four groups, decided by the price and by what the provider publishes about it. Prices are per million tokens, and the share is that row against Anthropic's price.

The maker's list price

1 price

What the lab that trained the model charges on its own API.

Anthropic
The price Anthropic charges for the model it trained. Every row below is measured against it.
Anthropic ↗
$3 / $15in / out per M
1.00×of list price

Cheaper, and we know why

2 prices

Below list, with a published reason: hosting the open weights, a regional price list, credits, a stated discount.

Poe
A consumer subscription with an API bolted on. Points convert to dollars, so the rate moves when the conversion does.
983k context herePoe ↗
$2.58 / $12.88in / out per M
0.86×of list price
Jiekou
5% under the list price, an ordinary reseller margin.
200k context hereJiekou ↗
$2.85 / $14.25in / out per M
0.95×of list price

Same price as the maker

35 prices

The same price the maker charges, sold by someone else.

OpenRouter
The same price Anthropic charges.
OpenRouter ↗
$3 / $15in / out per M
1.00×of list price
NanoGPT
The same price Anthropic charges.
200k context hereNanoGPT ↗
$3 / $15in / out per M
1.00×of list price
NanoGPT
The same price Anthropic charges.
200k context hereNanoGPT ↗
$3 / $15in / out per M
1.00×of list price
Impossibl
The same price Anthropic charges.
200k context hereImpossibl ↗
$3 / $15in / out per M
1.00×of list price
LLM Gateway
The same price Anthropic charges.
200k context hereLLM Gateway ↗
$3 / $15in / out per M
1.00×of list price
OrcaRouter
The same price Anthropic charges.
$3 / $15in / out per M
1.00×of list price
Azure Cognitive Services
The same price Anthropic charges.
200k context here
$3 / $15in / out per M
1.00×of list price
Google Vertex AI
The same price Anthropic charges.
200k context hereGoogle Vertex AI ↗
$3 / $15in / out per M
1.00×of list price
Pioneer
The same price Anthropic charges.
Pioneer ↗
$3 / $15in / out per M
1.00×of list price
Helicone
The same price Anthropic charges.
200k context here
$3 / $15in / out per M
1.00×of list price
Requesty
The same price Anthropic charges.
Requesty ↗
$3 / $15in / out per M
1.00×of list price
Vercel AI Gateway
The same price Anthropic charges.
Vercel AI Gateway ↗
$3 / $15in / out per M
1.00×of list price
Cloudflare AI Gateway
The same price Anthropic charges.
$3 / $15in / out per M
1.00×of list price
Perplexity Agent
The same price Anthropic charges.
200k context here
$3 / $15in / out per M
1.00×of list price
Opper
The same price Anthropic charges.
200k context here
$3 / $15in / out per M
1.00×of list price
Kilo Gateway
The same price Anthropic charges.
Kilo Gateway ↗
$3 / $15in / out per M
1.00×of list price
Azure AI Foundry
The same price Anthropic charges.
200k context hereAzure AI Foundry ↗
$3 / $15in / out per M
1.00×of list price
Merge Gateway
The same price Anthropic charges.
200k context here
$3 / $15in / out per M
1.00×of list price
Abacus
The same price Anthropic charges.
200k context here
$3 / $15in / out per M
1.00×of list price
OpenCode Zen
The same price Anthropic charges.
$3 / $15in / out per M
1.00×of list price
NEAR AI Cloud
The same price Anthropic charges.
200k context hereNEAR AI Cloud ↗
$3 / $15in / out per M
1.00×of list price
Ofox
The same price Anthropic charges.
200k context hereOfox ↗
$3 / $15in / out per M
1.00×of list price
Neon
The same price Anthropic charges.
200k context here
$3 / $15in / out per M
1.00×of list price
302.AI
The same price Anthropic charges.
200k context here
$3 / $15in / out per M
1.00×of list price
ZenMux
The same price Anthropic charges.
ZenMux ↗
$3 / $15in / out per M
1.00×of list price

showing the 25 cheapest of 35 · every row in the open dataset

Cheaper, and nobody says why

2 prices · never ranked

Below list on a closed model with nothing to account for it. Shown, never ranked, never a pick.

QiHang
0.14× Anthropic's list price on a closed model, and nobody says why. Listed, never ranked.
200k context here
$0.43 / $2.14in / out per M
0.14×of list price
Meganova
Lists closed models at 0.80× the maker's price across its catalog.
Meganova ↗
$2.40 / $12in / out per M
0.80×of list price

Frequently asked

Who sells Claude Sonnet 4.5 cheapest?: Poe, at $2.58 in and $12.88 out per million tokens, read on 16 Sept 2026. A consumer subscription with an API bolted on. Points convert to dollars, so the rate moves when the conversion does.
Is Claude Sonnet 4.5 open weights?: No. Anthropic keeps the weights, so every price on this page is Anthropic's own or a resale of it. A price below list here needs a published reason, or it is listed and never ranked.
How much context does Claude Sonnet 4.5 hold?: 1,000,000 tokens in one call, which is about 1M, and it can call your own functions.
How does Claude Sonnet 4.5 compare with the rest of the market?: At $24 per million tokens, Anthropic's price is 576% above the $3.55 median across the 337 text models we track.