Claude Sonnet 4.5
Claude Sonnet 4.5 is Anthropic’s most advanced Sonnet model to date, optimized for real-world agents and coding workflows. It delivers state-of-the-art performance on coding benchmarks such as SWE-bench Verified, with...
Input / 1M
$3.00
Output / 1M
$15.00
Context
1M
AA Intelligence
20.7
Closed weights — available only as a hosted API
text + image + file → text
Knowledge cutoff Jan 2025
View on OpenRouter ↗
Pricing
via OpenRouter · USD per 1M tokens · synced 2026-10-24$3.00
input / 1M
$15.00
output / 1M
$0.30
cached input / 1M
$18.00
1M in + 1M out
:batch variant
$1.50 in · $7.50 out
Price tiers
- Above 200K prompt tokens: input $6.00/M, output $22.50/M (2× base)
- Context window
- 1,000,000 tokens
- Max output
- 64,000 tokens
- Providers
- 5
- Cheapest provider
- Amazon Bedrock · $3.00 / $15.00
- Best throughput
- —
- AA Intelligence / Coding / Agentic
- 20.7 / 52.1 / 15.8
✓ Tool calling
✓ Reasoning
✓ Structured outputs
✓ Image input
✓ File input
✗ Audio input
✓ Prompt caching
Price history
tracking started — chart appears after 7 days of snapshots (6 recorded)Current: $3.00 input · $15.00 output per 1M tokens
Benchmarks
Third-party indices as published through OpenRouter — Artificial Analysis and Design Arena. Not measured by us.
- AA Intelligence Index
- 20.7
- AA Coding Index
- 52.1
- AA Agentic Index
- 15.8
Design Arena
CategoryEloWin %Rank
3d
1158
51%
#66
asciiart
1205
56.1%
#23
codecategories
1183
51.5%
#64
dataviz
1167
47.4%
#73
gamedev
1166
51.1%
#70
svg
1115
52.2%
#58
uicomponent
1169
49.4%
#69
website
1190
51.8%
#70
fullstack
1050
43.7%
#35
mobileapps
1137
52.9%
#33
webapps
1059
43.2%
#40
Providers
5 providers · per 1M tokens · last 30 min metrics| Provider | Quant | Context | Input | Output | Uptime | Tok/s |
|---|---|---|---|---|---|---|
| Amazon Bedrock | unknown | 1M | $3.00 | $15.00 | 100% | — |
| Anthropic | unknown | 1M | $3.00 | $15.00 | 100% | — |
| Azure | unknown | 200K | $3.00 | $15.00 | — | — |
| Claude Platform on AWS | unknown | 1M | $3.00 | $15.00 | 100% | — |
| unknown | 1M | $3.00 | $15.00 | — | — | |
| Amazon Bedrock | unknown | 1M | $3.30 | $16.50 | — | — |
| unknown | 1M | $3.30 | $16.50 | — | — |
Provider data from OpenRouter's endpoint listing, refreshed daily.
Specifications
- Organisation
- anthropic
- Released on OpenRouter
- 2025-09-29
- Context window
- 1,000,000 tokens
- Max output
- 64,000 tokens
- Input
- text, image, file
- Output
- text
- Knowledge cutoff
- January 2025
- Tokenizer
- Claude
- Moderated by provider
- Yes
- OpenRouter id
- anthropic/claude-sonnet-4.5
Compare with
Popular comparisons
Prices, context and providers from the public OpenRouter API, snapshotted daily; benchmark indices from Artificial Analysis. See /methodology.