Glimmer Index
Plus $4/mo

Claude Opus 4.6

Anthropic · Released Feb 5, 2026 · Closed weights

High-end Claude for difficult coding, planning, and slower expert reasoning

Strongest at
Science
Top 26% of the past year's models · 3 of 4 benchmarks
Price per 1M tokens
$5 / $25
input / output · Anthropic
Context window
1M
tokens in · 128K out
Since the last one
73 days
after Claude Opus 4.5
Lab announcement ↗Open in the timeline

Capability profile

Scored against 91 models released in the past year. 50 is the average model; further out is better.

This modelClaude Opus 4.5Median of the past year
5090Median of the past yearCoding: 54 · Better than 45%Writing: 56 · Top 50%Reading & documents: 51 · Top 49%Reasoning: 55 · Better than 40%Math: 57 · Top 45%Science: 69 · Top 26%Computer use: 75 · Top 29%Claude Opus 4.5: 59Claude Opus 4.5: 61Claude Opus 4.5: 51Claude Opus 4.5: 60CodingWritingReadingReasoningMathScienceComputer use
Coding54−4.1Better than 45%
Writing56Top 50%
Reading & documents51Top 49% · 1 test
Reasoning55−6.1Better than 40%
Math57+5.3Top 45%
Science69+8.6Top 26%
Computer use75Top 29% · 1 test

No results yet: Visual reasoning

Where these scores come from

Each capability combines the published benchmarks listed here, rescaled so 50 is the reference average and 15 points is one standard deviation. A hollow dot rests on a single benchmark.

Price against capability

The shaded corner holds anything better and cheaper. Prices blend input and output 3 to 1.

12 models from the past year score higher on Science for less: Claude Opus 5.5, Claude Sonnet 5.5, Gemini 3.1 Pro Preview and 9 more.

$0.1$0.3$1$3$10$30406080100GPT-6.1 Terra: 69, $2 per 1MDeepSeek V4.1 Flash 1017: 69, $0.52 per 1MMuse Spark Open: 66, $2 per 1MClaude Haiku 5.5: 65, $0.2 per 1MMistral Large 4: 65, $2.06 per 1MGemini 4 Argon: 71, $4 per 1MGPT-6.1 Sol: 70, $4 per 1MClaude Sonnet 5.5: 76, $4 per 1MGPT-6 Sol: 69, $4 per 1MGPT-6 Luna: 67, $0.2 per 1MClaude Opus 5.5: 108, $8 per 1MGrok 4.7: 61, $3 per 1MDeepSeek V4.1 Flash: 62, $0.21 per 1MGPT-6 Astra: 101, $20 per 1MGemini 3.8 Flash: 70, $1.5 per 1MClaude Fable 5.1: 90, $20 per 1MGLM-5.3-Flash: 67, $0.24 per 1MGLM-5.3: 60, $2.15 per 1MGemini 3.7 Flash: 54, $1.5 per 1MDeepSeek V4 Pro 0813: 66, $0.99 per 1MQwen3.8 2.4T A95B: 70, $3 per 1MGrok 4.6: 58, $3 per 1MMuse Spark 1.2: 60, $2 per 1MQwen3.8 Max: 68, $3 per 1MDeepSeek V4 Flash 0731: 64, $0.15 per 1MClaude Opus 5: 79, $10 per 1MGemini 3.6 Flash: 63, $1.5 per 1MGemini 3.5 Flash Lite: 53, $0.85 per 1MKimi K3: 62, $6 per 1MQwen3.7 Flash: 62, $0.055 per 1MGPT-5.6 Terra: 61, $4.5 per 1MGPT-5.6 Sol: 73, $8 per 1MGPT-5.6 Luna: 54, $0.45 per 1MGrok 4.5: 59, $3 per 1MClaude Sonnet 5: 66, $4 per 1MGLM-5.2: 67, $2.15 per 1MKimi K2.7 Code: 60, $1.71 per 1MClaude Fable 5: 71, $20 per 1MQwen3.7 Plus: 65, $0.7 per 1MClaude Opus 4.8: 63, $10 per 1MQwen3.7 Max: 67, $3.75 per 1MGemini 3.5 Flash: 65, $3.38 per 1MGPT-5.5 Instant: 62, $11.2 per 1MDeepSeek V4 Pro: 51, $1.19 per 1MDeepSeek V4 Flash: 49, $0.18 per 1MGPT-5.5 Pro: 69, $67.5 per 1MGPT-5.5: 73, $11.2 per 1MQwen3.6 27B: 64, $1.35 per 1MKimi K2.6: 62, $1.71 per 1MGrok 4.3: 52, $1.56 per 1MClaude Opus 4.7: 70, $10 per 1MQwen3.6 35B-A3B: 52, $0.84 per 1MGLM-5.1: 62, $2.15 per 1MGemma 4 31B IT: 57, $0.25 per 1MGPT-5.4 nano: 56, $0.46 per 1MGPT-5.4 mini: 62, $1.69 per 1MNemotron 3 Super 120B A12B: 44, $0.82 per 1MGPT-5.4 Pro: 75, $67.5 per 1MGPT-5.4: 71, $5.62 per 1MGemini 3.1 Flash Lite Preview: 54, $0.56 per 1MGemini 3.1 Flash Lite: 50, $0.56 per 1MQwen3.5 Flash: 62, $0.18 per 1MQwen3.5 9B: 59, $0.19 per 1MQwen3.5 35B-A3B: 62, $0.69 per 1MQwen3.5 27B: 45, $0.82 per 1MGemini 3.1 Pro Preview: 73, $4.5 per 1MClaude Sonnet 4.6: 63, $6 per 1MQwen3.5 Plus: 63, $0.9 per 1MQwen3.5 397B-A17B: 64, $1.35 per 1MGLM-5: 58, $1.55 per 1MGPT-5.3 Codex: 72, $4.81 per 1MQwen3 Coder Next: 42, $0.29 per 1MKimi K2.5: 53, $1 per 1MGLM-4.7: 62, $1 per 1MGemini 3 Flash Preview: 63, $1.12 per 1MGPT-5.2: 66, $4.81 per 1MDeepSeek V3.2: 62, $0.32 per 1MGPT-5.1: 61, $3.44 per 1MKimi K2 Thinking: 47, $1.07 per 1MClaude Opus 4.5: 60, $10 per 1MClaude Opus 4.6: 69, $10 per 1MClaude Opus 4.6Price per 1M tokens →↑ Science$0.1$1$10406080100GPT-6.1 Terra: 69, $2 per 1MDeepSeek V4.1 Flash 1017: 69, $0.52 per 1MMuse Spark Open: 66, $2 per 1MClaude Haiku 5.5: 65, $0.2 per 1MMistral Large 4: 65, $2.06 per 1MGemini 4 Argon: 71, $4 per 1MGPT-6.1 Sol: 70, $4 per 1MClaude Sonnet 5.5: 76, $4 per 1MGPT-6 Sol: 69, $4 per 1MGPT-6 Luna: 67, $0.2 per 1MClaude Opus 5.5: 108, $8 per 1MGrok 4.7: 61, $3 per 1MDeepSeek V4.1 Flash: 62, $0.21 per 1MGPT-6 Astra: 101, $20 per 1MGemini 3.8 Flash: 70, $1.5 per 1MClaude Fable 5.1: 90, $20 per 1MGLM-5.3-Flash: 67, $0.24 per 1MGLM-5.3: 60, $2.15 per 1MGemini 3.7 Flash: 54, $1.5 per 1MDeepSeek V4 Pro 0813: 66, $0.99 per 1MQwen3.8 2.4T A95B: 70, $3 per 1MGrok 4.6: 58, $3 per 1MMuse Spark 1.2: 60, $2 per 1MQwen3.8 Max: 68, $3 per 1MDeepSeek V4 Flash 0731: 64, $0.15 per 1MClaude Opus 5: 79, $10 per 1MGemini 3.6 Flash: 63, $1.5 per 1MGemini 3.5 Flash Lite: 53, $0.85 per 1MKimi K3: 62, $6 per 1MQwen3.7 Flash: 62, $0.055 per 1MGPT-5.6 Terra: 61, $4.5 per 1MGPT-5.6 Sol: 73, $8 per 1MGPT-5.6 Luna: 54, $0.45 per 1MGrok 4.5: 59, $3 per 1MClaude Sonnet 5: 66, $4 per 1MGLM-5.2: 67, $2.15 per 1MKimi K2.7 Code: 60, $1.71 per 1MClaude Fable 5: 71, $20 per 1MQwen3.7 Plus: 65, $0.7 per 1MClaude Opus 4.8: 63, $10 per 1MQwen3.7 Max: 67, $3.75 per 1MGemini 3.5 Flash: 65, $3.38 per 1MGPT-5.5 Instant: 62, $11.2 per 1MDeepSeek V4 Pro: 51, $1.19 per 1MDeepSeek V4 Flash: 49, $0.18 per 1MGPT-5.5 Pro: 69, $67.5 per 1MGPT-5.5: 73, $11.2 per 1MQwen3.6 27B: 64, $1.35 per 1MKimi K2.6: 62, $1.71 per 1MGrok 4.3: 52, $1.56 per 1MClaude Opus 4.7: 70, $10 per 1MQwen3.6 35B-A3B: 52, $0.84 per 1MGLM-5.1: 62, $2.15 per 1MGemma 4 31B IT: 57, $0.25 per 1MGPT-5.4 nano: 56, $0.46 per 1MGPT-5.4 mini: 62, $1.69 per 1MNemotron 3 Super 120B A12B: 44, $0.82 per 1MGPT-5.4 Pro: 75, $67.5 per 1MGPT-5.4: 71, $5.62 per 1MGemini 3.1 Flash Lite Preview: 54, $0.56 per 1MGemini 3.1 Flash Lite: 50, $0.56 per 1MQwen3.5 Flash: 62, $0.18 per 1MQwen3.5 9B: 59, $0.19 per 1MQwen3.5 35B-A3B: 62, $0.69 per 1MQwen3.5 27B: 45, $0.82 per 1MGemini 3.1 Pro Preview: 73, $4.5 per 1MClaude Sonnet 4.6: 63, $6 per 1MQwen3.5 Plus: 63, $0.9 per 1MQwen3.5 397B-A17B: 64, $1.35 per 1MGLM-5: 58, $1.55 per 1MGPT-5.3 Codex: 72, $4.81 per 1MQwen3 Coder Next: 42, $0.29 per 1MKimi K2.5: 53, $1 per 1MGLM-4.7: 62, $1 per 1MGemini 3 Flash Preview: 63, $1.12 per 1MGPT-5.2: 66, $4.81 per 1MDeepSeek V3.2: 62, $0.32 per 1MGPT-5.1: 61, $3.44 per 1MKimi K2 Thinking: 47, $1.07 per 1MClaude Opus 4.5: 60, $10 per 1MClaude Opus 4.6: 69, $10 per 1MClaude Opus 4.6Price per 1M tokens →↑ Science

Anthropic $5 / $25 · OpenRouter $5 / $25 · Cached input $0.5

Since Claude Opus 4.5

8 releases in the Claude Opus line.

Claude Opus 4May 22, 202575dClaude Opus 4.1Aug 5, 2025111dClaude Opus 4.5Nov 24, 202573dClaude Opus 4.6Feb 5, 202670dClaude Opus 4.7Apr 16, 202642dClaude Opus 4.8May 28, 202657dClaude Opus 5Jul 24, 2026
Released73 days later
Price in / out$5 / $25same price
Context1M5.0×
Coding54−4.1
Reasoning55−6.1
Math57+5.3
Science69+8.6

A newer release is out: Claude Opus 5.5.

ECI STANDING#33 of 270
SCORE155.66153.82–158.07 CI
FRONTIER LAGLaunched 1.8 months behindScores about what GPT-5.2 Pro did in December 2025.
SCORES LIKE THESE MODELSGLM-5.3Z.ai (Zhipu AI) · Aug 2026155.99DeepSeek V4.1 FlashDeepSeek · Sep 2026155.93DeepSeek V4 Pro 0813DeepSeek · Aug 2026155.64
Gemini 3.1 ProGoogle DeepMind · Feb 2026155.34
Full Epoch Capabilities Index ranking ↗

Epoch benchmark boards

Best result on each board it has run. The tick marks the leader.

DeepResearch Bench
55%#1 of 26
Cybench
93%#1 of 22
METR Time Horizons
79%#2 of 42
WeirdML
78%#14 of 141
Terminal Bench
80%#5 of 50
DTBench
91%#36 of 179
GSO-Bench
41%#8 of 35
GPQA diamond
88%#55 of 234
14 more boards
OTIS Mock AIME 2024-2025
91%#61 of 216
CL-bench
21%#6 of 21
CL-bench Life
17%#4 of 14
ProofBench
50%#31 of 81
FrontierMath-Tiers-1-3-v2-Private
66%#35 of 90
SimpleQA Verified
47%#35 of 85
Mystery Game Puzzles
25%#39 of 88
FrontierMath-Tier-4-v2-Private
27%#43 of 72
Remote Labor Index
4%#9 of 15
APEX-Agents
46%#32 of 51
Chess Puzzles
21%#62 of 93
Furniture Assembly
28%#26 of 35
EBR-bench
13%#21 of 28
FrontierCode
27%#35 of 46

Anthropic's past year

12 release days in the past year, about one every 30 days. The next is expected around Nov 10, 2026. Forecasts ↗

NovDecJanFebMarAprMayJunJulAugSepOctNov

Specifications

RELEASE DATEFeb 5, 2026
WEIGHTSClosed weights
CONTEXT WINDOW1M
MAX OUTPUT128K
REASONINGNot listed
TOOL CALLINGNot listed
INPUTStext, image/jpeg, image/png, image/gif, image/webp, application/pdf
OUTPUTStext

Models.dev record ↗

Specifications and prices from Models.dev; availability and limits may differ by provider. Benchmarks from Epoch AI (CC BY 4.0), LiveBench and the other sources named above.