Anthropic: Claude Sonnet 4.5
Released Sep 29, 2025Try it on:
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...
Best overall rank
#39
▼ 1 vs 7d ago
Total arena votes
1,064,999
Across 62 (subset, category) entries
Providers on OR
7
Amazon Bedrock + others
First seen
2026-05-08
45 days tracked
Trend
Pricing
Per token
- Input (per 1M)
- $3.00
- Output (per 1M)
- $15.00
- Cache Read (per 1M)
- $0.300
- Cache Write (per 1M)
- $3.75
Per unit
- Web search
- $0.010/call
Capabilities
Modality
text+image+file->textContext
1M tokens
Tokenizer
Claude
Knowledge cutoff
2025-01-31
Max output
64K tokens
Moderation
Moderated
Supported parameters
include_reasoning
max_tokens
reasoning
response_format
stop
structured_outputs
temperature
tool_choice
tools
top_k
top_p
Providers
| Provider | Region / Tag | Context | Input/M | Output/M | Uptime 1d | Latency | Quant | Cache |
|---|---|---|---|---|---|---|---|---|
| Amazon Bedrock | amazon-bedrock/eu-west-1 | 1M | $3.00 | $15.00 | 100.00% | - | - | - |
| Anthropic | anthropic/2 | 1M | $3.00 | $15.00 | 100.00% | - | - | - |
google-vertex/global | 1M | $3.00 | $15.00 | 100.00% | - | - | - | |
google-vertex/us-east5 | 1M | $3.00 | $15.00 | 100.00% | - | - | - | |
| Amazon Bedrock | amazon-bedrock | 1M | $3.00 | $15.00 | 99.81% | - | - | - |
| Anthropic | anthropic | 1M | $3.00 | $15.00 | 99.39% | - | - | - |
| Amazon Bedrock | anthropic/claude-on-aws | 1M | $3.00 | $15.00 | 81.45% | - | - | - |
Per-category ranks
Text
| Rank | Category | Variant | Trend | Elo | Votes |
|---|---|---|---|---|---|
| #18 | Coding | thinking-32k | 1520 | 19,323 | |
| #18 | Creative Writing | - | 1454 | 12,059 | |
| #18 | Longer Query | thinking-32k | 1486 | 24,578 | |
| #20 | Hard Prompts English | thinking-32k | 1498 | 23,108 | |
| #21 | Expert | thinking-32k | 1501 | 5,464 | |
| #21 | Longer Query | - | 1484 | 24,992 | |
| #22 | Instruction Following | thinking-32k | 1465 | 23,658 | |
| #23 | Creative Writing | thinking-32k | 1447 | 12,330 | |
| #23 | Industry Entertainment And Sports And Media | thinking-32k | 1443 | 15,674 | |
| #23 | Instruction Following | - | 1464 | 23,319 | |
| #24 | Coding | - | 1514 | 19,175 | |
| #24 | Hard Prompts English | - | 1491 | 23,378 | |
| #24 | Industry Writing And Literature And Language | - | 1454 | 18,406 | |
| #24 | Spanish | - | 1464 | 2,169 | |
| #26 | Multi Turn | - | 1479 | 14,139 | |
| #27 | Industry Business And Management And Financial Operations | - | 1461 | 15,390 | |
| #27 | Industry Entertainment And Sports And Media | - | 1442 | 15,308 | |
| #29 | Hard Prompts | thinking-32k | 1487 | 46,941 | |
| #29 | Industry Mathematical | thinking-32k | 1472 | 3,911 | |
| #29 | Industry Software And It Services | thinking-32k | 1501 | 29,984 | |
| #31 | English | thinking-32k | 1472 | 38,959 | |
| #32 | Expert | - | 1486 | 5,571 | |
| #32 | Industry Writing And Literature And Language | thinking-32k | 1451 | 18,795 | |
| #32 | Spanish | thinking-32k | 1454 | 2,282 | |
| #33 | French | - | 1478 | 1,833 | |
| #33 | German | thinking-32k | 1455 | 1,300 | |
| #33 | Hard Prompts | - | 1484 | 46,593 | |
| #34 | Industry Software And It Services | - | 1498 | 29,730 | |
| #35 | English | - | 1468 | 38,641 | |
| #35 | Korean | - | 1415 | 1,256 | |
| #35 | Math | thinking-32k | 1455 | 4,913 | |
| #37 | Industry Business And Management And Financial Operations | thinking-32k | 1458 | 15,615 | |
| #38 | Exclude Ties | - | 1459 | 59,248 | |
| #38 | Multi Turn | thinking-32k | 1470 | 14,067 | |
| #39 | Exclude Ties | thinking-32k | 1459 | 60,671 | |
| #39 | Overall | thinking-32k | 1455 | 82,494 | |
| #40 | French | thinking-32k | 1476 | 1,872 | |
| #40 | Overall | - | 1455 | 80,950 | |
| #41 | Industry Legal And Government | - | 1464 | 5,775 | |
| #41 | Industry Life And Physical And Social Science | - | 1473 | 13,108 | |
| #41 | Russian | - | 1453 | 7,935 | |
| #43 | Industry Legal And Government | thinking-32k | 1462 | 5,704 | |
| #44 | German | - | 1444 | 1,297 | |
| #45 | Russian | thinking-32k | 1450 | 7,918 | |
| #46 | Chinese | thinking-32k | 1489 | 3,873 | |
| #46 | Industry Medicine And Healthcare | - | 1473 | 5,169 | |
| #46 | Japanese | - | 1409 | 673 | |
| #48 | Industry Life And Physical And Social Science | thinking-32k | 1470 | 13,147 | |
| #48 | Industry Mathematical | - | 1453 | 3,988 | |
| #50 | Industry Medicine And Healthcare | thinking-32k | 1471 | 5,209 | |
| #50 | Japanese | thinking-32k | 1405 | 693 | |
| #56 | Korean | thinking-32k | 1392 | 1,286 | |
| #57 | Chinese | - | 1482 | 3,867 | |
| #73 | Math | - | 1428 | 4,913 |
WebDev
| Rank | Category | Variant | Trend | Elo | Votes |
|---|---|---|---|---|---|
| #42 | Webdev-react | - | 1386 | 5,407 | |
| #43 | Webdev-react | thinking-32k | 1382 | 4,417 | |
| #45 | Webdev | thinking-32k | 1388 | 15,740 | |
| #46 | Overall | thinking-32k | 1388 | 15,741 | |
| #48 | Webdev | - | 1386 | 18,389 | |
| #48 | Webdev-html | thinking-32k | 1396 | 11,312 | |
| #49 | Overall | - | 1386 | 18,390 | |
| #50 | Webdev-html | - | 1386 | 12,952 |