Claude Sonnet 4.6

anthropic/claude-4.6-sonnet-20260217

Claude Sonnet 4.6 by Anthropic processes text, image, and file inputs to generate text output. It supports tool usage and reasoning, has a context window of 1,

  • tool use
  • structured outputs
  • reasoning

At a glance

provideranthropic
releasedAug 26, 2025
context1M
input / M$3

Specifications

What the API gives you

Context window
1M tokens
Max output
128K tokens
Input price
$3 / 1M tokens
Output price
$15 / 1M tokens
Cache read
$0.30 / 1M tokens
Modalities
text, image, file → text
Knowledge cutoff
Released
Aug 26, 2025

Measured evidence

Public benchmark record

Design Arena Coding
1307 Elo2026-07-28
Design Arena Coding
1307 Elo2026-07-27
Design Arena Coding
1307 Elo2026-07-30
Design Arena Coding
1307 Elo2026-07-29
Design Arena Coding
1307 Elo2026-07-31
Design Arena Coding
1306 Elo2026-08-02
Design Arena Coding
1306 Elo2026-08-05
Design Arena Coding
1306 Elo2026-08-01
Design Arena Coding
1304 Elo2026-08-09
Design Arena Coding
1307 Elo2026-08-03
Design Arena Coding
1306 Elo2026-08-04
Design Arena Coding
1302 Elo2026-08-14
Design Arena Coding
1306 Elo2026-08-06
Design Arena Coding
1304 Elo2026-08-10
Design Arena Coding
1306 Elo2026-08-07
Design Arena Coding
1296 Elo2026-08-18
Design Arena Coding
1305 Elo2026-08-08
Design Arena Coding
1301 Elo2026-08-21
Design Arena Coding
1296 Elo2026-08-15
Design Arena Coding
1304 Elo2026-08-11
Design Arena Coding
1304 Elo2026-08-12
Design Arena Coding
1295 Elo2026-08-19
Design Arena Coding
1302 Elo2026-08-13
Design Arena Coding
1301 Elo2026-08-27
Design Arena Coding
1295 Elo2026-08-20
Design Arena Coding
1296 Elo2026-08-16
Design Arena Coding
1293 Elo2026-09-05
Design Arena Coding
1296 Elo2026-08-17
Design Arena Coding
1301 Elo2026-08-22
Design Arena Coding
1301 Elo2026-08-23
Design Arena Coding
1300 Elo2026-08-28
Design Arena Coding
1301 Elo2026-08-24
Design Arena Coding
1301 Elo2026-08-25
Design Arena Coding
1302 Elo2026-08-26
Design Arena Coding
1292 Elo2026-09-06
Design Arena Coding
1300 Elo2026-08-29
Design Arena Coding
1300 Elo2026-08-30
Design Arena Coding
1300 Elo2026-08-31
Design Arena Coding
1300 Elo2026-09-01
Design Arena Coding
1299 Elo2026-09-02
Design Arena Coding
1297 Elo2026-09-03
Design Arena Coding
1296 Elo2026-09-04
Design Arena UI
1308 Elo2026-07-28
Design Arena UI
1309 Elo2026-07-27
Design Arena UI
1309 Elo2026-07-30
Design Arena UI
1309 Elo2026-07-29
Design Arena UI
1308 Elo2026-07-31
Design Arena UI
1309 Elo2026-08-02
Design Arena UI
1309 Elo2026-08-01
Design Arena UI
1308 Elo2026-08-05
Design Arena UI
1305 Elo2026-08-09
Design Arena UI
1308 Elo2026-08-03
Design Arena UI
1309 Elo2026-08-04
Design Arena UI
1303 Elo2026-08-14
Design Arena UI
1308 Elo2026-08-06
Design Arena UI
1308 Elo2026-08-07
Design Arena UI
1306 Elo2026-08-10
Design Arena UI
1306 Elo2026-08-08
Design Arena UI
1298 Elo2026-08-18
Design Arena UI
1306 Elo2026-08-11
Design Arena UI
1299 Elo2026-08-15
Design Arena UI
1306 Elo2026-08-12
Design Arena UI
1306 Elo2026-08-13
Design Arena UI
1298 Elo2026-08-19
Design Arena UI
1298 Elo2026-08-27
Design Arena UI
1299 Elo2026-08-16
Design Arena UI
1298 Elo2026-08-20
Design Arena UI
1298 Elo2026-08-17
Design Arena UI
1294 Elo2026-09-05
Design Arena UI
1298 Elo2026-08-21
Design Arena UI
1299 Elo2026-08-22
Design Arena UI
1299 Elo2026-08-23
Design Arena UI
1298 Elo2026-08-28
Design Arena UI
1299 Elo2026-08-24
Design Arena UI
1299 Elo2026-08-25
Design Arena UI
1299 Elo2026-08-26
Design Arena UI
1295 Elo2026-09-06
Design Arena UI
1298 Elo2026-08-29
Design Arena UI
1298 Elo2026-08-30
Design Arena UI
1298 Elo2026-08-31
Design Arena UI
1298 Elo2026-09-01
Design Arena UI
1297 Elo2026-09-02
Design Arena UI
1295 Elo2026-09-03
Design Arena UI
1294 Elo2026-09-04
Design Arena Web-app Agent
1242 Elo2026-07-28
Design Arena Web-app Agent
1242 Elo2026-07-27
Design Arena Web-app Agent
1240 Elo2026-07-30
Design Arena Web-app Agent
1240 Elo2026-07-29
Design Arena Web-app Agent
1240 Elo2026-07-31
Design Arena Web-app Agent
1241 Elo2026-08-02
Design Arena Web-app Agent
1240 Elo2026-08-01
Design Arena Web-app Agent
1239 Elo2026-08-05
Design Arena Web-app Agent
1234 Elo2026-08-09
Design Arena Web-app Agent
1241 Elo2026-08-03
Design Arena Web-app Agent
1241 Elo2026-08-04
Design Arena Web-app Agent
1228 Elo2026-08-14
Design Arena Web-app Agent
1239 Elo2026-08-06
Design Arena Web-app Agent
1231 Elo2026-08-10
Design Arena Web-app Agent
1239 Elo2026-08-07
Design Arena Web-app Agent
1226 Elo2026-08-18
Design Arena Web-app Agent
1240 Elo2026-08-08
Design Arena Web-app Agent
1230 Elo2026-08-11
Design Arena Web-app Agent
1229 Elo2026-08-15
Design Arena Web-app Agent
1231 Elo2026-08-12
Design Arena Web-app Agent
1230 Elo2026-08-13
Design Arena Web-app Agent
1226 Elo2026-08-19
Design Arena Web-app Agent
1222 Elo2026-08-27
Design Arena Web-app Agent
1226 Elo2026-08-20
Design Arena Web-app Agent
1229 Elo2026-08-16
Design Arena Web-app Agent
1220 Elo2026-09-05
Design Arena Web-app Agent
1229 Elo2026-08-17
Design Arena Web-app Agent
1227 Elo2026-08-21
Design Arena Web-app Agent
1227 Elo2026-08-22
Design Arena Web-app Agent
1227 Elo2026-08-23
Design Arena Web-app Agent
1222 Elo2026-08-28
Design Arena Web-app Agent
1222 Elo2026-08-24
Design Arena Web-app Agent
1223 Elo2026-08-25
Design Arena Web-app Agent
1223 Elo2026-08-26
Design Arena Web-app Agent
1220 Elo2026-09-06
Design Arena Web-app Agent
1222 Elo2026-08-29
Design Arena Web-app Agent
1221 Elo2026-08-30
Design Arena Web-app Agent
1221 Elo2026-08-31
Design Arena Web-app Agent
1221 Elo2026-09-01
Design Arena Web-app Agent
1220 Elo2026-09-02
Design Arena Web-app Agent
1220 Elo2026-09-03
Design Arena Web-app Agent
1220 Elo2026-09-04
Design Arena Website
1310 Elo2026-07-28
Design Arena Website
1310 Elo2026-07-30
Design Arena Website
1310 Elo2026-07-27
Design Arena Website
1310 Elo2026-07-29
Design Arena Website
1310 Elo2026-07-31
Design Arena Website
1310 Elo2026-08-02
Design Arena Website
1309 Elo2026-08-01
Design Arena Website
1309 Elo2026-08-05
Design Arena Website
1310 Elo2026-08-03
Design Arena Website
1308 Elo2026-08-09
Design Arena Website
1310 Elo2026-08-04
Design Arena Website
1305 Elo2026-08-14
Design Arena Website
1309 Elo2026-08-06
Design Arena Website
1309 Elo2026-08-07
Design Arena Website
1308 Elo2026-08-10
Design Arena Website
1308 Elo2026-08-08
Design Arena Website
1297 Elo2026-08-18
Design Arena Website
1308 Elo2026-08-11
Design Arena Website
1297 Elo2026-08-15
Design Arena Website
1307 Elo2026-08-12
Design Arena Website
1305 Elo2026-08-13
Design Arena Website
1297 Elo2026-08-19
Design Arena Website
1296 Elo2026-08-16
Design Arena Website
1297 Elo2026-08-20
Design Arena Website
1305 Elo2026-08-27
Design Arena Website
1297 Elo2026-08-17
Design Arena Website
1300 Elo2026-09-05
Design Arena Website
1305 Elo2026-08-21
Design Arena Website
1305 Elo2026-08-22
Design Arena Website
1305 Elo2026-08-23
Design Arena Website
1305 Elo2026-08-24
Design Arena Website
1305 Elo2026-08-28
Design Arena Website
1306 Elo2026-08-25
Design Arena Website
1306 Elo2026-08-26
Design Arena Website
1298 Elo2026-09-06
Design Arena Website
1305 Elo2026-08-29
Design Arena Website
1304 Elo2026-08-30
Design Arena Website
1304 Elo2026-08-31
Design Arena Website
1304 Elo2026-09-01
Design Arena Website
1303 Elo2026-09-02
Design Arena Website
1301 Elo2026-09-03
Design Arena Website
1300 Elo2026-09-04
LiveBench Coding
79.3%2026-06-25
LiveBench Language
76.1%2026-06-25
LiveBench Math
87.0%2026-06-25
LiveBench Reasoning
84.8%2026-06-25
LMArena Agent
22026-07-13
LMArena Agent
3.22026-07-20
LMArena Agent
3.12026-07-27
LMArena Agent
2.82026-07-21
LMArena Agent
3.22026-07-28
LMArena Agent
32026-08-03
LMArena Agent
3.12026-08-12
LMArena Agent
32026-08-06
LMArena Agent
32026-08-11
LMArena Agent
3.12026-08-13
LMArena Agent
2.22026-08-24
LMArena Agent
12026-08-31
LMArena Agent
0.52026-09-05
LMArena Agent
1.72026-08-27
LMArena Creative Writing
1437 Elo2026-07-21
LMArena Creative Writing
1438 Elo2026-07-27
LMArena Creative Writing
1438 Elo2026-07-30
LMArena Creative Writing
1438 Elo2026-08-02
LMArena Creative Writing
1438 Elo2026-08-03
LMArena Creative Writing
1436 Elo2026-08-06
LMArena Creative Writing
1437 Elo2026-08-12
LMArena Creative Writing
1436 Elo2026-08-21
LMArena Creative Writing
1436 Elo2026-09-02
LMArena Creative Writing
1436 Elo2026-08-27
LMArena Creative Writing
1436 Elo2026-09-01
LMArena Long Query
1481 Elo2026-07-21
LMArena Long Query
1481 Elo2026-07-27
LMArena Long Query
1481 Elo2026-07-30
LMArena Long Query
1480 Elo2026-08-02
LMArena Long Query
1480 Elo2026-08-03
LMArena Long Query
1480 Elo2026-08-06
LMArena Long Query
1480 Elo2026-08-12
LMArena Long Query
1480 Elo2026-08-21
LMArena Long Query
1480 Elo2026-09-02
LMArena Long Query
1480 Elo2026-08-27
LMArena Long Query
1480 Elo2026-09-01
LMArena Math
1463 Elo2026-07-21
LMArena Math
1461 Elo2026-07-27
LMArena Math
1461 Elo2026-07-30
LMArena Math
1462 Elo2026-08-02
LMArena Math
1462 Elo2026-08-03
LMArena Math
1462 Elo2026-08-06
LMArena Math
1462 Elo2026-08-12
LMArena Math
1462 Elo2026-08-21
LMArena Math
1462 Elo2026-09-01
LMArena Math
1462 Elo2026-08-27
LMArena Text
1457 Elo2026-07-16
LMArena Text
1473 Elo2026-07-21
LMArena Text
1472 Elo2026-07-27
LMArena Text
1472 Elo2026-07-30
LMArena Text
1472 Elo2026-08-02
LMArena Text
1472 Elo2026-08-06
LMArena Text
1472 Elo2026-08-03
LMArena Text
1472 Elo2026-08-10
LMArena Text
1472 Elo2026-08-21
LMArena Text
1472 Elo2026-08-12
LMArena Text
1472 Elo2026-09-01
LMArena Text
1472 Elo2026-09-02
LMArena Text
1472 Elo2026-08-27
LMArena Vision
1282 Elo2026-07-12
LMArena Vision
1275 Elo2026-07-21
LMArena Vision
1275 Elo2026-07-26
LMArena Vision
1275 Elo2026-07-30
LMArena Vision
1275 Elo2026-08-02
LMArena Vision
1275 Elo2026-08-06
LMArena Vision
1275 Elo2026-08-21
LMArena Vision
1275 Elo2026-08-27
LMArena WebDev
1522 Elo2026-07-16
LMArena WebDev
1523 Elo2026-07-21
LMArena WebDev
1522 Elo2026-07-20
LMArena WebDev
1523 Elo2026-07-27
LMArena WebDev
1523 Elo2026-07-24
LMArena WebDev
1524 Elo2026-07-28
LMArena WebDev
1524 Elo2026-07-30
LMArena WebDev
1523 Elo2026-08-01
LMArena WebDev
1523 Elo2026-07-31
LMArena WebDev
1522 Elo2026-08-06
LMArena WebDev
1523 Elo2026-08-02
LMArena WebDev
1524 Elo2026-08-12
LMArena WebDev
1524 Elo2026-08-10
LMArena WebDev
1524 Elo2026-08-14
LMArena WebDev
1522 Elo2026-09-01
LMArena WebDev
1521 Elo2026-09-05
LMArena WebDev
1522 Elo2026-08-21
LMArena WebDev
1522 Elo2026-08-30
OSWorld Verified
9.3%2026-06-24medium effort
SWE-rebench
54.5% ± 0.22026-05-15tools

LMArena data licensed CC-BY-4.0. Aider (Apache-2.0) and SWE-bench (MIT) are open. Design Arena uses blind human preference. Submitted scaffold plus model result. Compare the harness and effort settings, not only the model name.

Task evidence

How broad is the support?

Each status is exact to this model version and the selected task. Official release claims remain provisional.

  • Best LLM for Competition MathEstablished evidence

    100% of intended weighted task evidence across 2 independent sources. 5 of 5 configured evaluation feeds currently have results.

  • Best LLM for Business WritingEstablished evidence

    100% of intended weighted task evidence across 2 independent sources. 5 of 5 configured evaluation feeds currently have results.

  • 100% of intended weighted task evidence across 2 independent sources. 5 of 5 configured evaluation feeds currently have results.

  • Best LLM for Marketing CopyEstablished evidence

    100% of intended weighted task evidence across 2 independent sources. 5 of 5 configured evaluation feeds currently have results.

  • Best LLM for Chat & RoleplayEstablished evidence

    100% of intended weighted task evidence across 2 independent sources. 5 of 5 configured evaluation feeds currently have results.

  • Best LLM for Creative WritingEstablished evidence

    100% of intended weighted task evidence across 2 independent sources. 5 of 5 configured evaluation feeds currently have results.

  • Best LLM for Frontend & UIEstablished evidence

    100% of intended weighted task evidence across 3 independent sources. 5 of 5 configured evaluation feeds currently have results.

  • Best LLM for WritingEstablished evidence

    100% of intended weighted task evidence across 2 independent sources. 5 of 5 configured evaluation feeds currently have results.

  • 100% of intended weighted task evidence across 2 independent sources. 5 of 5 configured evaluation feeds currently have results.

  • Best LLM for Math & ReasoningEstablished evidence

    100% of intended weighted task evidence across 2 independent sources. 5 of 5 configured evaluation feeds currently have results.

  • 100% of intended weighted task evidence across 2 independent sources. 5 of 5 configured evaluation feeds currently have results.

  • 90% of intended weighted task evidence across 2 independent sources. 4 of 4 configured evaluation feeds currently have results.

  • Best LLM for Code CompletionEstablished evidence

    81% of intended weighted task evidence across 2 independent sources. 4 of 4 configured evaluation feeds currently have results.

  • Best LLM for CodingEstablished evidence

    74% of intended weighted task evidence across 4 independent sources. 8 of 8 configured evaluation feeds currently have results.

  • 70% of intended weighted task evidence across 3 independent sources. 6 of 6 configured evaluation feeds currently have results.

  • 67% of intended weighted task evidence across 2 independent sources. 3 of 4 configured evaluation feeds currently have results.

  • 65% of intended weighted task evidence across 2 independent sources. 3 of 4 configured evaluation feeds currently have results.

  • Best Local LLM for CodingEstablished evidence

    64% of intended weighted task evidence across 3 independent sources. 5 of 5 configured evaluation feeds currently have results.

  • Best LLM for Fast SummariesEstablished evidence

    64% of intended weighted task evidence across 2 independent sources. 3 of 4 configured evaluation feeds currently have results.

  • Best Value LLMEstablished evidence

    64% of intended weighted task evidence across 2 independent sources. 3 of 4 configured evaluation feeds currently have results.

  • Best LLM for Agentic CodingEstablished evidence

    64% of intended weighted task evidence across 4 independent sources. 8 of 8 configured evaluation feeds currently have results.

  • 60% of intended weighted task evidence across 2 independent sources. 4 of 6 configured evaluation feeds currently have results.

  • Best LLM for SummarizationEstablished evidence

    60% of intended weighted task evidence across 2 independent sources. 4 of 6 configured evaluation feeds currently have results.

  • 55% of intended weighted task evidence across 2 independent sources; broader independent confirmation is still missing from WMT translation. 4 of 5 configured evaluation feeds currently have results.

  • 55% of intended weighted task evidence across 2 independent sources; broader independent confirmation is still missing from WMT translation. 4 of 5 configured evaluation feeds currently have results.

  • Best LLM for TranslationProvisional evidence

    55% of intended weighted task evidence across 2 independent sources; broader independent confirmation is still missing from WMT translation. 4 of 5 configured evaluation feeds currently have results.

  • Best LLM for Autonomous AgentsProvisional evidence

    54% of intended weighted task evidence across 4 independent sources; broader independent confirmation is still missing from Frontier-Bench or Terminal-Bench 2.1. 7 of 7 configured evaluation feeds currently have results.

  • Best LLM for AI AgentsProvisional evidence

    52% of intended weighted task evidence across 4 independent sources; broader independent confirmation is still missing from Berkeley Function Calling or Terminal-Bench 2.1. 7 of 7 configured evaluation feeds currently have results.

  • Best Cheap LLM for High VolumeProvisional evidence

    50% of intended weighted task evidence across 2 independent sources; broader independent confirmation is still missing from Route reliability. 3 of 4 configured evaluation feeds currently have results.

  • Cheapest Capable LLMProvisional evidence

    50% of intended weighted task evidence across 2 independent sources; broader independent confirmation is still missing from Route reliability. 3 of 4 configured evaluation feeds currently have results.

  • Best LLM for Massive ContextProvisional evidence

    50% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from LongBench v2. 3 of 4 configured evaluation feeds currently have results.

  • Best LLM for OCR & DocumentsProvisional evidence

    45% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from Structured-output eval or VLMEvalKit tasks. 3 of 5 configured evaluation feeds currently have results.

  • 45% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from Structured-output eval or VLMEvalKit tasks. 3 of 5 configured evaluation feeds currently have results.

  • Best LLM for Charts & DiagramsProvisional evidence

    45% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from Structured-output eval or VLMEvalKit tasks. 3 of 5 configured evaluation feeds currently have results.

  • Best LLM for Document ParsingProvisional evidence

    45% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from Structured-output eval or VLMEvalKit tasks. 3 of 5 configured evaluation feeds currently have results.

  • Best LLM for Hermes AgentProvisional evidence

    45% of intended weighted task evidence across 2 independent sources; broader independent confirmation is still missing from Berkeley Function Calling or Terminal-Bench 2.1. 5 of 5 configured evaluation feeds currently have results.

  • Best LLM for OpenHandsProvisional evidence

    45% of intended weighted task evidence across 2 independent sources; broader independent confirmation is still missing from Berkeley Function Calling or Terminal-Bench 2.1. 5 of 5 configured evaluation feeds currently have results.

  • Best LLM for GooseProvisional evidence

    45% of intended weighted task evidence across 2 independent sources; broader independent confirmation is still missing from Berkeley Function Calling or Terminal-Bench 2.1. 5 of 5 configured evaluation feeds currently have results.

  • Best LLM for OpenClawProvisional evidence

    45% of intended weighted task evidence across 2 independent sources; broader independent confirmation is still missing from Berkeley Function Calling or Terminal-Bench 2.1. 5 of 5 configured evaluation feeds currently have results.

  • 39% of intended weighted task evidence across 2 independent sources; broader independent confirmation is still missing from Berkeley Function Calling or Structured-output eval. 4 of 5 configured evaluation feeds currently have results.

  • 39% of intended weighted task evidence across 2 independent sources; broader independent confirmation is still missing from Berkeley Function Calling or Structured-output eval. 4 of 5 configured evaluation feeds currently have results.

  • 35% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from FACTS Grounding or LMArena Search. 4 of 6 configured evaluation feeds currently have results.

  • 31% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from Route reliability or Structured-output eval. 2 of 4 configured evaluation feeds currently have results.

  • 25% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from Berkeley Function Calling or LMArena Search. 4 of 5 configured evaluation feeds currently have results.

  • Best LLM for Grounded RAGProvisional evidence

    10% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from CRAG or FACTS Grounding. 2 of 5 configured evaluation feeds currently have results.

Catalog data via OpenRouter and models.dev. Last checked within the past 6 hours.