Claude Sonnet 4.5 pricing.
Prices checked
Claude Sonnet 4.5 costs $3 in and $15 out per million tokens from Anthropic; the cheapest price is $5.15 at Poe, checked .
Anthropic's own price
Anthropic
$3 in · $15 out
581% above the typical price of the 392 text models we track.
Cheapest price
Poe
$2.58 in · $12.88 out
14% less than Anthropic, and the provider says why.
Web search from this model costs $10 per 1,000 searches, plus its tokens; dedicated search APIs from $1
Every provider selling Claude Sonnet 4.5
- 1
$2.58 in · $12.88 out · 983k context here
$5.15/M tokens - 2
$2.85 in · $14.25 out
$5.70/M tokens - 3
$3.00 in · $14.99 out
$6.00/M tokens - 4
$3 in · $15 out · 1M context here
$6/M tokens - 5
$3 in · $15 out
$6/M tokens - 6
$3 in · $15 out · 1M context here
$6/M tokens - 7
$3 in · $15 out · 1M context here
$6/M tokens - 8
$3 in · $15 out · 1M context here
$6/M tokens - 9
$3 in · $15 out
$6/M tokens - 10
$3 in · $15 out
$6/M tokens - 11
Snowflake Cortex
Same as maker$3 in · $15 out
$6/M tokens - 12
$3 in · $15 out
$6/M tokens - 13
$3 in · $15 out · 1M context here
$6/M tokens - 14
$3 in · $15 out
$6/M tokens - 15
$3 in · $15 out
$6/M tokens - 16
$3 in · $15 out
$6/M tokens - 17
$3 in · $15 out
$6/M tokens - 18
$3 in · $15 out
$6/M tokens - 19Same as maker
$3 in · $15 out
$6/M tokens - 20
$3 in · $15 out
$6/M tokens - 21
$3 in · $15 out
$6/M tokens - 22
$3 in · $15 out
$6/M tokens - 23
$3 in · $15 out · 1M context here
$6/M tokens - 24
$3 in · $15 out · 1M context here
$6/M tokens - 25
$3 in · $15 out
$6/M tokens
- 26
$3 in · $15 out
$6/M tokens - 27
$3 in · $15 out
$6/M tokens - 28
$3 in · $15 out
$6/M tokens - 29
$3 in · $15 out
$6/M tokens - 30
$3 in · $15 out · 410k context here
$6/M tokens - 31
$3 in · $15 out · 1M context here
$6/M tokens - 32
$3 in · $15 out · 1M context here
$6/M tokens - 33
$3 in · $15 out · 1M context here
$6/M tokens - 34
$3 in · $15 out
$6/M tokens - 35
$3 in · $15 out · 1M context here
$6/M tokens - 36
$3 in · $15 out
$6/M tokens - 37
$3 in · $15 out
$6/M tokens - 38
$3 in · $15 out · 1M context here
$6/M tokens - 39
$3.17 in · $15.83 out · 1M context here
$6.33/M tokens - 40Costs more
$3.17 in · $15.87 out
$6.35/M tokens - 41
$3.30 in · $16.50 out
$6.60/M tokens - 42
$3.30 in · $16.50 out
$6.60/M tokens
Not ranked
Below the maker's own price with nothing published to account for it, from a catalog we could not read reliably, or a free tier, which is a limit rather than a price. Why
QiHang
Not ranked$0.43 in · $2.14 out
$0.86/M tokens$2.40 in · $12 out · 1M context here
$4.80/M tokens
What it costs for your work
A month at Anthropic's own price
A month at Poe, the cheapest
What you save
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.
Evidence
Each is a measurement of the stated version and configuration. Two benchmarks are not the same test, and a score is not the chance your own work succeeds.
SWE-bench Verified 500
71.4 / 100SWE-bench · model claude-sonnet-4-5-20250929 · mini-SWE-agent 2.0.0; attempts 1; reasoning high
Evaluated 17 Feb 2026, read 31 Oct 2026
Read the sourceBFCL V4 multi-turn V4 / bfcl-eval 2025.12.17
61.37 / 100Berkeley BFCL · model Claude-Sonnet-4-5-20250929 · FC; multi-turn
Published 17 Oct 2026, read 31 Oct 2026
Read the sourceBFCL V4 web-search V4 / bfcl-eval 2025.12.17
81 / 100Berkeley BFCL · model Claude-Sonnet-4-5-20250929 · FC; web-search
Published 17 Oct 2026, read 31 Oct 2026
Read the sourceBFCL V4 memory V4 / bfcl-eval 2025.12.17
64.95 / 100Berkeley BFCL · model Claude-Sonnet-4-5-20250929 · FC; memory
Published 17 Oct 2026, read 31 Oct 2026
Read the sourceHow we count
Prices are per million tokens. The big number on each row is blended 3 in : 1 out, the way most work uses a model. A price below Anthropic's own is listed as cheapest only when the provider says why.
- Credits
- Priced in credits or points that convert to dollars, so the rate moves when the conversion does.
- Resells
- The provider sells another company's endpoint, at a margin of its own or at the maker's price.
- Same as maker
- Sold by someone else at the price the maker charges.
- Maker's price
- What the lab that trained the model charges on its own API. Every other row is measured against it.
- Costs more
- Sold by someone else for more than the maker charges.
- Not ranked
- Below the maker's price on a closed model with nothing to account for it, or from a catalog we could not read reliably. Listed, and never a pick.
Similar models
Models from other labs that do what Claude Sonnet 4.5 does, cheapest first. Each percentage is against Claude Sonnet 4.5's cheapest price, $5.15 per M tokens.
Frequently asked
- Who sells Claude Sonnet 4.5 cheapest?
- Poe, at $2.58 in and $12.88 out per million tokens, checked 31 Oct 2026. Priced in credits or points that 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 Anthropic's here needs a published reason, or it is listed and not ranked.
- How much context does Claude Sonnet 4.5 hold?
- 200,000 tokens in one call, which is about 200k, and it can call your own functions.
- How does Claude Sonnet 4.5 compare with the rest of the market?
- At $6 per million tokens, Anthropic's own price is 581% above the typical $0.88 across the 392 text models we track.
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