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Anthropic: Claude Opus 4.8

anthropic/claude-opus-4.8

Claude Opus 4.8 is Anthropic's most capable generally available model in the Opus family. It supports text, image, and file inputs with text output, with reasoning support and a 1M-token...

Source-linkedClosed weights
Report data
Context window1M
Maximum output128K
Provider offers0
Knowledge cutoffUndisclosed
Capabilities

What this model supports

ReasoningNo
Tool callingNo
Structured outputNo
AttachmentsNo
Temperature controlNo
Open weightsNo
Creator
Anthropic
Family
Not documented
Modalities
File, Image, Text
License
Not documented
Release date
Not documented
Model ID
anthropic/claude-opus-4.8
Market availability

Provider pricing

Report price →
No known providers available.
Evidence

Published benchmark results

Agentic Index vs top 7 models
GPT-5.6 Sol
54.0
Claude Fable 5
52.8
GPT-5.6 Terra
47.4
Anthropic: Claude Opus 4.8
47.2
Claude Sonnet 5
46.7
xAI: Grok 4.5
45.7
GPT-5.6 Luna
45.6
Coding Index vs top 7 models
GPT-5.6 Sol
77.4
GPT-5.6 Terra
76.7
Claude Fable 5
76.5
GPT-5.5
74.9
Anthropic: Claude Opus 4.8
74.3
Anthropic: Claude Opus 4.7
73.6
xAI: Grok 4.5
72.4
Design Arena: 3d vs top 8 models
Z.ai: GLM 5.2
1371.0
Claude Fable 5
1361.0
xAI: Grok 4.5
1352.0
Kimi K2.6
1348.0
Anthropic: Claude Opus 4.6
1348.0
Z.ai: GLM 5.1
1336.0
DeepSeek V4 Pro
1326.0
Anthropic: Claude Opus 4.8
1284.0
Design Arena: agenticgamedev vs top 7 models
Anthropic: Claude Opus 4.7
1277.0
Anthropic: Claude Opus 4.8
1251.0
Gemini 3.5 Flash
1208.0
Z.ai: GLM 5.1
1206.0
GPT-5.5
1201.0
Anthropic: Claude Sonnet 4.6
1191.0
Kimi K2.6
1175.0
Design Arena: agentichtmlslides vs top 7 models
Claude Fable 5
1254.0
Kimi K2.6
1248.0
Anthropic: Claude Opus 4.7
1243.0
Anthropic: Claude Opus 4.8
1227.0
Gemini 3.1 Pro Preview
1226.0
Z.ai: GLM 5.1
1205.0
Gemini 3.5 Flash
1162.0
Design Arena: agenticslides vs top 7 models
Anthropic: Claude Opus 4.7
1334.0
Anthropic: Claude Opus 4.8
1294.0
Z.ai: GLM 5.1
1245.0
Gemini 3.5 Flash
1244.0
Kimi K2.6
1187.0
Z.ai: GLM 5V Turbo
1171.0
GPT-5.5
1150.0
Design Arena: agenticslides(html) vs top 7 models
Claude Fable 5
1252.0
Kimi K2.6
1252.0
Anthropic: Claude Opus 4.7
1242.0
Anthropic: Claude Opus 4.8
1230.0
Gemini 3.1 Pro Preview
1219.0
Z.ai: GLM 5.1
1204.0
Gemini 3.5 Flash
1162.0
Design Arena: agenticslides(python-pptx) vs top 7 models
Anthropic: Claude Opus 4.7
1331.0
Anthropic: Claude Opus 4.8
1310.0
Gemini 3.5 Flash
1242.0
Z.ai: GLM 5.1
1240.0
Kimi K2.6
1186.0
Z.ai: GLM 5V Turbo
1183.0
GPT-5.5
1155.0
Design Arena: androidnative vs top 7 models
Anthropic: Claude Opus 4.8
1370.0
Anthropic: Claude Opus 4.7
1290.0
Z.ai: GLM 5V Turbo
1267.0
GPT-5.5
1260.0
Z.ai: GLM 5.2
1250.0
Gemini 3.5 Flash
1247.0
Z.ai: GLM 5.1
1246.0
Design Arena: asciiart vs top 7 models
Claude Fable 5
1369.0
Anthropic: Claude Opus 4.7
1326.0
Gemini 3.1 Pro Preview
1316.0
Gemini 3.5 Flash
1308.0
Anthropic: Claude Opus 4.8
1305.0
Anthropic: Claude Opus 4.6
1305.0
GPT-5.5
1302.0
Design Arena: codecategories vs top 8 models
Z.ai: GLM 5.2
1352.0
Claude Fable 5
1344.0
Anthropic: Claude Opus 4.6
1336.0
Anthropic: Claude Opus 4.7
1330.0
xAI: Grok 4.5
1328.0
Z.ai: GLM 5.1
1321.0
Kimi K2.6
1320.0
Anthropic: Claude Opus 4.8
1276.0
Design Arena: dataviz vs top 8 models
Claude Fable 5
1372.0
Z.ai: GLM 5.1
1366.0
xAI: Grok 4.5
1330.0
Anthropic: Claude Opus 4.6
1321.0
Anthropic: Claude Opus 4.7
1320.0
Z.ai: GLM 5.2
1318.0
Anthropic: Claude Sonnet 4.6
1317.0
Anthropic: Claude Opus 4.8
1279.0
Design Arena: fullstack vs top 7 models
Anthropic: Claude Opus 4.7
1503.0
Anthropic: Claude Opus 4.8
1322.0
Claude Sonnet 5
1314.0
Z.ai: GLM 5.2
1298.0
Claude Fable 5
1296.0
Anthropic: Claude Opus 4.6
1286.0
Anthropic: Claude Sonnet 4.6
1271.0
Design Arena: gamedev vs top 8 models
Claude Fable 5
1387.0
Z.ai: GLM 5.2
1354.0
Claude Sonnet 5
1345.0
GPT-5.5
1344.0
Anthropic: Claude Opus 4.6
1339.0
MiMo-V2.5-Pro
1334.0
Anthropic: Claude Opus 4.7
1334.0
Anthropic: Claude Opus 4.8
1297.0
Design Arena: htmlslides vs top 7 models
Claude Fable 5
1260.0
Kimi K2.6
1246.0
Anthropic: Claude Opus 4.7
1239.0
Anthropic: Claude Opus 4.8
1222.0
Kimi K2.7 Code
1211.0
Z.ai: GLM 5.1
1205.0
Gemini 3.1 Pro Preview
1204.0
Design Arena: mobileapps vs top 7 models
Anthropic: Claude Opus 4.8
1287.0
Claude Fable 5
1282.0
MiniMax: MiniMax M3
1273.0
Anthropic: Claude Opus 4.6
1259.0
Gemini 3.5 Flash
1259.0
Anthropic: Claude Sonnet 4.6
1255.0
Z.ai: GLM 5.2
1243.0
Design Arena: pptxslides vs top 7 models
Anthropic: Claude Opus 4.7
1333.0
Anthropic: Claude Opus 4.8
1306.0
Gemini 3.5 Flash
1244.0
Z.ai: GLM 5.1
1241.0
Kimi K2.6
1181.0
Z.ai: GLM 5V Turbo
1164.0
GPT-5.5
1157.0
Design Arena: python-pptxslides vs top 7 models
Anthropic: Claude Opus 4.7
1336.0
Anthropic: Claude Opus 4.8
1298.0
Z.ai: GLM 5.1
1258.0
Gemini 3.5 Flash
1247.0
Z.ai: GLM 5.2
1209.0
Kimi K2.7 Code
1190.0
Kimi K2.6
1180.0
Design Arena: svg vs top 8 models
Claude Fable 5
1364.0
Gemini 3.1 Pro Preview
1340.0
Gemini 3.5 Flash
1297.0
Anthropic: Claude Opus 4.6
1279.0
GPT-5.5
1277.0
Anthropic: Claude Opus 4.7
1274.0
Z.ai: GLM 5.1
1273.0
Anthropic: Claude Opus 4.8
1226.0
Design Arena: uicomponent vs top 8 models
Claude Fable 5
1406.0
Anthropic: Claude Opus 4.7
1358.0
Anthropic: Claude Opus 4.6
1344.0
Z.ai: GLM 5.2
1336.0
Qwen: Qwen3.7 Max
1331.0
Z.ai: GLM 5.1
1330.0
Anthropic: Claude Sonnet 4.6
1321.0
Anthropic: Claude Opus 4.8
1285.0
Design Arena: webapps vs top 7 models
Claude Sonnet 5
1351.0
Claude Fable 5
1338.0
Anthropic: Claude Opus 4.7
1326.0
Anthropic: Claude Opus 4.8
1288.0
Z.ai: GLM 5.2
1280.0
xAI: Grok 4.5
1270.0
Qwen: Qwen3.7 Max
1267.0
Design Arena: website vs top 8 models
Z.ai: GLM 5.2
1346.0
Claude Fable 5
1336.0
Anthropic: Claude Opus 4.6
1331.0
Anthropic: Claude Opus 4.7
1329.0
xAI: Grok 4.5
1323.0
Anthropic: Claude Sonnet 4.6
1320.0
Claude Sonnet 5
1314.0
Anthropic: Claude Opus 4.8
1273.0
Intelligence Index vs top 7 models
Claude Fable 5
59.9
GPT-5.6 Sol
58.9
Anthropic: Claude Opus 4.8
55.7
GPT-5.6 Terra
55.0
GPT-5.5
54.8
xAI: Grok 4.5
53.8
Anthropic: Claude Opus 4.7
53.5