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
#35
▲ 2 vs 7d ago
Total arena votes
998,779
Across 62 (subset, category) entries
Providers on OR
7
Google + others
First seen
2026-05-08
26 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 |
|---|---|---|---|---|---|---|---|---|
google-vertex/global | 1M | $3.00 | $15.00 | 99.98% | - | - | - | |
google-vertex/us-east5 | 1M | $3.00 | $15.00 | 99.95% | - | - | - | |
| Amazon Bedrock | amazon-bedrock | 1M | $3.00 | $15.00 | 99.87% | - | - | - |
| Anthropic | anthropic | 1M | $3.00 | $15.00 | 99.72% | - | - | - |
| Anthropic | anthropic/2 | 1M | $3.00 | $15.00 | 99.72% | - | - | - |
| Amazon Bedrock | anthropic/claude-on-aws | 1M | $3.00 | $15.00 | 89.99% | - | - | - |
| Amazon Bedrock | amazon-bedrock/eu-west-1 | 1M | $3.00 | $15.00 | - | - | - | - |
Per-category ranks
Text
| Rank | Category | Variant | Trend | Elo | Votes |
|---|---|---|---|---|---|
| #14 | Coding | thinking-32k | 1520 | 17,763 | |
| #15 | Creative Writing | - | 1455 | 11,254 | |
| #16 | Hard Prompts English | thinking-32k | 1498 | 21,335 | |
| #16 | Longer Query | thinking-32k | 1485 | 22,126 | |
| #17 | Longer Query | - | 1484 | 22,429 | |
| #18 | Instruction Following | thinking-32k | 1465 | 21,913 | |
| #19 | Coding | - | 1515 | 17,609 | |
| #19 | Instruction Following | - | 1463 | 21,466 | |
| #19 | Spanish | - | 1467 | 1,996 | |
| #20 | Expert | thinking-32k | 1499 | 5,012 | |
| #21 | Hard Prompts English | - | 1491 | 21,582 | |
| #21 | Industry Entertainment And Sports And Media | - | 1443 | 14,195 | |
| #21 | Industry Writing And Literature And Language | - | 1454 | 17,182 | |
| #23 | Creative Writing | thinking-32k | 1446 | 11,650 | |
| #23 | Industry Entertainment And Sports And Media | thinking-32k | 1443 | 14,693 | |
| #24 | Industry Business And Management And Financial Operations | - | 1461 | 14,409 | |
| #24 | Multi Turn | - | 1479 | 13,166 | |
| #26 | Industry Mathematical | thinking-32k | 1471 | 3,629 | |
| #27 | English | thinking-32k | 1472 | 36,624 | |
| #27 | Hard Prompts | thinking-32k | 1486 | 43,559 | |
| #27 | Industry Writing And Literature And Language | thinking-32k | 1450 | 17,698 | |
| #28 | Expert | - | 1488 | 5,115 | |
| #29 | German | thinking-32k | 1456 | 1,247 | |
| #29 | Hard Prompts | - | 1483 | 43,125 | |
| #29 | Industry Software And It Services | thinking-32k | 1500 | 27,914 | |
| #30 | Industry Software And It Services | - | 1499 | 27,661 | |
| #31 | English | - | 1469 | 36,294 | |
| #32 | Industry Business And Management And Financial Operations | thinking-32k | 1456 | 14,679 | |
| #33 | Multi Turn | thinking-32k | 1470 | 13,170 | |
| #35 | Exclude Ties | - | 1459 | 55,135 | |
| #35 | Overall | - | 1455 | 76,121 | |
| #35 | Spanish | thinking-32k | 1453 | 2,120 | |
| #36 | Korean | - | 1414 | 1,172 | |
| #36 | Math | thinking-32k | 1454 | 4,651 | |
| #36 | Overall | thinking-32k | 1455 | 77,813 | |
| #37 | Exclude Ties | thinking-32k | 1458 | 56,666 | |
| #37 | French | - | 1475 | 1,638 | |
| #39 | Industry Life And Physical And Social Science | - | 1471 | 12,283 | |
| #40 | Japanese | - | 1408 | 624 | |
| #40 | Russian | - | 1452 | 7,308 | |
| #41 | Industry Legal And Government | - | 1462 | 5,394 | |
| #42 | French | thinking-32k | 1472 | 1,676 | |
| #43 | German | - | 1443 | 1,243 | |
| #43 | Industry Legal And Government | thinking-32k | 1460 | 5,339 | |
| #43 | Industry Mathematical | - | 1452 | 3,702 | |
| #43 | Industry Medicine And Healthcare | - | 1473 | 4,777 | |
| #45 | Industry Life And Physical And Social Science | thinking-32k | 1469 | 12,347 | |
| #46 | Japanese | thinking-32k | 1399 | 641 | |
| #47 | Russian | thinking-32k | 1447 | 7,393 | |
| #49 | Industry Medicine And Healthcare | thinking-32k | 1470 | 4,849 | |
| #50 | Chinese | thinking-32k | 1485 | 3,582 | |
| #55 | Chinese | - | 1481 | 3,594 | |
| #58 | Korean | thinking-32k | 1386 | 1,211 | |
| #71 | Math | - | 1427 | 4,673 |
WebDev
| Rank | Category | Variant | Trend | Elo | Votes |
|---|---|---|---|---|---|
| #35 | Webdev-react | - | 1386 | 5,409 | |
| #37 | Webdev-react | thinking-32k | 1382 | 4,419 | |
| #41 | Overall | thinking-32k | 1388 | 15,739 | |
| #41 | Webdev | thinking-32k | 1388 | 15,739 | |
| #42 | Webdev-html | thinking-32k | 1396 | 11,308 | |
| #43 | Overall | - | 1386 | 18,386 | |
| #43 | Webdev | - | 1386 | 18,386 | |
| #44 | Webdev-html | - | 1386 | 12,946 |