Glimmer Index
Plus $4/mo

Claude Sonnet 5

Anthropic · Released Jun 30, 2026 · Closed weights

Everyday Claude agent model for coding, planning, browsing, and general work

Strongest at
Coding
Top 30% of the past year's models · 4 of 7 benchmarks
Price per 1M tokens
$2 / $10
input / output · Anthropic
Context window
1M
tokens in · 128K out
Since the last one
133 days
after Claude Sonnet 4.6
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 Sonnet 4.6Median of the past year
5090Median of the past yearClaude Sonnet 4.6Coding: 60 · Top 30%Writing: 57 · Top 47%Reading & documents: 51 · Top 50%Reasoning: 64 · Top 38%Math: 62 · Top 31%Science: 66 · Top 34%Visual reasoning: 45 · Better than 31%Computer use: 55 · Better than 15%CodingWritingReadingReasoningMathScienceVisionComputer use
Coding60+24.6Top 30%
Writing57−0.0Top 47%
Reading & documents51−0.7Top 50%
Reasoning64+10.3Top 38%
Math62+7.4Top 31%
Science66+3.3Top 34%
Visual reasoning45+3.2Better than 31%
Computer use55−0.5Better than 15%
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.

6 models from the past year score higher on Coding for less: DeepSeek V4.1 Flash, Muse Spark 1.3, DeepSeek V3.2 and 3 more.

$0.3$1$3$10020406080Claude Haiku 5.5: 60, $0.2 per 1MMistral Large 4: 56, $2.06 per 1MGemini 4 Argon: 65, $4 per 1MGPT-6.1 Sol: 64, $4 per 1MClaude Sonnet 5.5: 71, $4 per 1MGPT-6 Sol: 62, $4 per 1MGPT-6 Luna: 55, $0.2 per 1MClaude Opus 5.5: 79, $8 per 1MGrok 4.7: 59, $3 per 1MDeepSeek V4.1 Flash: 72, $0.21 per 1MGPT-6 Astra: 73, $20 per 1MMuse Spark 1.3: 69, $2 per 1MGemini 3.8 Flash: 57, $1.5 per 1MClaude Fable 5.1: 85, $20 per 1MGLM-5.3-Flash: 54, $0.24 per 1MDeepSeek V4 Flash Vision Exp: 55, $0.32 per 1MQwen3.8 27B: 60, $1.12 per 1MGLM-5.3: 60, $2.15 per 1MGemini 3.7 Flash: 59, $1.5 per 1MDeepSeek V4 Pro 0813: 49, $0.99 per 1MGrok 4.6: 60, $3 per 1MMuse Spark 1.2: 53, $2 per 1MQwen3.8 Max: 55, $3 per 1MDeepSeek V4 Flash 0731: 38, $0.15 per 1MClaude Opus 5: 69, $10 per 1MGemini 3.6 Flash: 44, $1.5 per 1MGemini 3.5 Flash Lite: 41, $0.85 per 1MKimi K3: 63, $6 per 1MGPT-5.6 Terra: 58, $4.5 per 1MGPT-5.6 Sol: 68, $8 per 1MGPT-5.6 Luna: 56, $0.45 per 1MGrok 4.5: 50, $3 per 1MGLM-5.2: 48, $2.15 per 1MKimi K2.7 Code: 36, $1.71 per 1MClaude Fable 5: 77, $20 per 1MQwen3.7 Plus: 25, $0.7 per 1MClaude Opus 4.8: 62, $10 per 1MQwen3.7 Max: 48, $3.75 per 1MGemini 3.5 Flash: 47, $3.38 per 1MDeepSeek V4 Pro: 41, $1.19 per 1MDeepSeek V4 Flash: 23, $0.18 per 1MGPT-5.5: 58, $11.2 per 1MQwen3.6 27B: 29, $1.35 per 1MKimi K2.6: 52, $1.71 per 1MGrok 4.3: 1, $1.56 per 1MGrok Build 0.1: 29, $1.25 per 1MClaude Opus 4.7: 60, $10 per 1MMuse Spark 1.1: 52, $2 per 1MGLM-5.1: 55, $2.15 per 1MQwen3.6 Plus: 39, $1.12 per 1MGPT-5.4 nano: 36, $0.46 per 1MGPT-5.4 mini: 37, $1.69 per 1MGPT-5.4: 52, $5.62 per 1MGemini 3.1 Pro Preview: 38, $4.5 per 1MGLM-5: 52, $1.55 per 1MGPT-5.3 Codex: 56, $4.81 per 1MClaude Opus 4.6: 54, $10 per 1MKimi K2.5: 54, $1 per 1MGemini 3 Flash Preview: 49, $1.12 per 1MGPT-5.2 Codex: 55, $4.81 per 1MGPT-5.2: 57, $4.81 per 1MDeepSeek V3.2: 68, $0.32 per 1MClaude Opus 4.5: 59, $10 per 1MGPT-5.1: 46, $3.44 per 1MClaude Sonnet 4.6: 35, $6 per 1MClaude Sonnet 5: 60, $4 per 1MClaude Sonnet 5Price per 1M tokens →↑ Coding$1$10020406080Claude Haiku 5.5: 60, $0.2 per 1MMistral Large 4: 56, $2.06 per 1MGemini 4 Argon: 65, $4 per 1MGPT-6.1 Sol: 64, $4 per 1MClaude Sonnet 5.5: 71, $4 per 1MGPT-6 Sol: 62, $4 per 1MGPT-6 Luna: 55, $0.2 per 1MClaude Opus 5.5: 79, $8 per 1MGrok 4.7: 59, $3 per 1MDeepSeek V4.1 Flash: 72, $0.21 per 1MGPT-6 Astra: 73, $20 per 1MMuse Spark 1.3: 69, $2 per 1MGemini 3.8 Flash: 57, $1.5 per 1MClaude Fable 5.1: 85, $20 per 1MGLM-5.3-Flash: 54, $0.24 per 1MDeepSeek V4 Flash Vision Exp: 55, $0.32 per 1MQwen3.8 27B: 60, $1.12 per 1MGLM-5.3: 60, $2.15 per 1MGemini 3.7 Flash: 59, $1.5 per 1MDeepSeek V4 Pro 0813: 49, $0.99 per 1MGrok 4.6: 60, $3 per 1MMuse Spark 1.2: 53, $2 per 1MQwen3.8 Max: 55, $3 per 1MDeepSeek V4 Flash 0731: 38, $0.15 per 1MClaude Opus 5: 69, $10 per 1MGemini 3.6 Flash: 44, $1.5 per 1MGemini 3.5 Flash Lite: 41, $0.85 per 1MKimi K3: 63, $6 per 1MGPT-5.6 Terra: 58, $4.5 per 1MGPT-5.6 Sol: 68, $8 per 1MGPT-5.6 Luna: 56, $0.45 per 1MGrok 4.5: 50, $3 per 1MGLM-5.2: 48, $2.15 per 1MKimi K2.7 Code: 36, $1.71 per 1MClaude Fable 5: 77, $20 per 1MQwen3.7 Plus: 25, $0.7 per 1MClaude Opus 4.8: 62, $10 per 1MQwen3.7 Max: 48, $3.75 per 1MGemini 3.5 Flash: 47, $3.38 per 1MDeepSeek V4 Pro: 41, $1.19 per 1MDeepSeek V4 Flash: 23, $0.18 per 1MGPT-5.5: 58, $11.2 per 1MQwen3.6 27B: 29, $1.35 per 1MKimi K2.6: 52, $1.71 per 1MGrok 4.3: 1, $1.56 per 1MGrok Build 0.1: 29, $1.25 per 1MClaude Opus 4.7: 60, $10 per 1MMuse Spark 1.1: 52, $2 per 1MGLM-5.1: 55, $2.15 per 1MQwen3.6 Plus: 39, $1.12 per 1MGPT-5.4 nano: 36, $0.46 per 1MGPT-5.4 mini: 37, $1.69 per 1MGPT-5.4: 52, $5.62 per 1MGemini 3.1 Pro Preview: 38, $4.5 per 1MGLM-5: 52, $1.55 per 1MGPT-5.3 Codex: 56, $4.81 per 1MClaude Opus 4.6: 54, $10 per 1MKimi K2.5: 54, $1 per 1MGemini 3 Flash Preview: 49, $1.12 per 1MGPT-5.2 Codex: 55, $4.81 per 1MGPT-5.2: 57, $4.81 per 1MDeepSeek V3.2: 68, $0.32 per 1MClaude Opus 4.5: 59, $10 per 1MGPT-5.1: 46, $3.44 per 1MClaude Sonnet 4.6: 35, $6 per 1MClaude Sonnet 5: 60, $4 per 1MClaude Sonnet 5Price per 1M tokens →↑ Coding

Anthropic $2 / $10 · OpenRouter $2 / $10 · Cached input $0.2

Since Claude Sonnet 4.6

6 releases in the Claude Sonnet line.

Claude Sonnet 3.7Feb 19, 202592dClaude Sonnet 4May 22, 2025130dClaude Sonnet 4.5Sep 29, 2025141dClaude Sonnet 4.6Feb 17, 2026133dClaude Sonnet 5Jun 30, 202690dClaude Sonnet 5.5Sep 28, 2026
Released133 days later
Price in / out$2 / $10−33%
Context1Msame
Coding60+24.6
Writing57−0.0
Reading & documents51−0.7
Reasoning64+10.3
Math62+7.4
Science66+3.3
Visual reasoning45+3.2
Computer use55−0.5

A newer release is out: Claude Sonnet 5.5.

ECI STANDING#25 of 270
SCORE156.88154.1–159.65 CI
FRONTIER LAGLaunched 4.8 months behindScores about what GPT-5.3 Codex did in February 2026.
SCORES LIKE THESE MODELSGPT-5.3 CodexOpenAI · Feb 2026157.09Claude Opus 4.7Anthropic · Apr 2026156.79GPT-6 LunaOpenAI · Sep 2026156.75Grok 4.6xAI · Aug 2026156.57
Full Epoch Capabilities Index ranking ↗

Epoch benchmark boards

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

WeirdML
69%#23 of 141
GPQA diamond
90%#39 of 234
ProofBench
77%#14 of 81
DTBench
92%#33 of 179
OTIS Mock AIME 2024-2025
95%#44 of 216
Mystery Game Puzzles
35%#23 of 88
GSO-Bench
37%#10 of 35
SimpleBench
61%#27 of 89
7 more boards
Chess Puzzles
45%#31 of 93
Surface Evolver Bench
60%#10 of 26
APEX-Agents
54%#20 of 51
FrontierMath-Tiers-1-3-v2-Private
66%#37 of 90
FrontierCode
43%#20 of 46
FrontierMath-Tier-4-v2-Private
29%#37 of 72
SimpleQA Verified
34%#59 of 85

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 DATEJun 30, 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.