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Claude Opus 4.6 (Fast)

by Anthropic · Released Apr 2026

Multimodal1M Context
83.3
avg score
Rank #15
Compare
Top 5% of all models
Context
1.0M tokens (~500 books)
Input $/1M
$30.00
Output $/1M
$150.00
Type
multimodal
License
Proprietary
Benchmarks
12 tested
Data as of
About

Fast-mode variant of Opus 4.6 - identical capabilities with higher output speed at premium 6x pricing. Learn more in Anthropic's docs: https://platform.claude.com/docs/en/build-with-claude/fast-mode

Tested on 12 benchmarks · BenchGecko score 83.3. Top scores: Chatbot Arena Elo — Coding (1542.2%), Chatbot Arena Elo — Overall (1503.7%), MASK (96.3%).

Looking for similar performance at lower cost?
MiMo-V2-Flash scores 81.7 (98% as good) at $0.09/1M input · 100% cheaper
Capabilities
knowledge
44.4
#170 globally
agentic
24.7
#42 globally
speed
56.2
#17 globally
safety
96.3
#1 globally
Benchmark Scores
Compare All
Tested on 12 benchmarks · Ranked across 5 categories
Score Distribution (all 312 models)
0255075100
▲ You are here
knowledgeCompare knowledge →
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53.3·
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52.3·
VisualToolBench (VTB)

SEAL Visual Tool Bench. Tests ability to use visual tools for image analysis and manipulation.

27.5·
agenticCompare agentic →
SWE Atlas — Test Writing

SEAL SWE Atlas Test Writing. Tests ability to write effective test cases for existing code.

36.7·
SWE Atlas — Codebase QnA

SEAL SWE Atlas Codebase Q&A. Tests understanding of large codebases through question answering.

33.3·
Remote Labor Index (RLI)

SEAL Remote Labor Index. Evaluates AI performance on tasks typically done by remote knowledge workers.

4.2·
arenaCompare arena →
Chatbot Arena Elo — Coding

Chatbot Arena coding Elo. Human preference ranking specifically for coding tasks and technical questions.

1542·
Chatbot Arena Elo — Overall

Chatbot Arena overall Elo rating. Crowdsourced human preference ranking from blind head-to-head comparisons across all topics.

1504·
Quick compare:Anthropic logovs Claude Fable 5vs PaLM 2-Lxiaomi logovs MiMo-V2-Flash
Excellent (85+) Good (70-85) Average (50-70) Below (<50)
Model Family · Anthropic Claude Opus
Jan 2024
28.1
n/an/actx13 benchmarks
May 2025
49.8+21.7
$15.00/M in200Kctx23 benchmarks
Aug 2025
42.3-7.5
$15.00/M in200Kctx23 benchmarks
Aug 2025
$7.50/M in(-7.50)200Kctx
Nov 2025
59.0+16.7
$5.00/M in(-2.50)200Kctx42 benchmarks
Nov 2025
$2.50/M in(-2.50)200Kctx
Feb 2026
66.4+7.4
$5.00/M in(+2.50)1.0Mctx(+800K)40 benchmarks
Feb 2026
$2.50/M in(-2.50)1.0Mctx
Apr 2026
83.3+16.9
$30.00/M in(+27.50)1.0Mctx12 benchmarks
Apr 2026
65.6-17.7
$5.00/M in(-25)1.0Mctx30 benchmarks
Apr 2026
$2.50/M in(-2.50)1.0Mctx
May 2026
$30.00/M in(+27.50)1.0Mctx3 benchmarks
May 2026
71.8+6.2
$5.00/M in(-25)1.0Mctx29 benchmarks
May 2026
$2.50/M in(-2.50)1.0Mctx
May 2026
$10.00/M in(+7.50)1.0Mctx3 benchmarks
Jul 2026
86.5+14.7
$5.00/M in(-5)1.0Mctx23 benchmarks
Jul 2026
$2.50/M in(-2.50)1.0Mctx
Jul 2026
$10.00/M in(+7.50)1.0Mctx
Sep 2026
96.8+10.3
$4.00/M in(-6)1.0Mctx24 benchmarks
Sep 2026
$2.00/M in(-2)1.0Mctx
See the full Claude Opus family →
Recently Happened
Claude Opus 4.6 (Fast) added
Apr 8, 2026
Similar Models
Anthropic logo
Claude Fable 5
Anthropic
83.6$10.00/1M
PaLM 2-L
Unknown
81.8n/a
xiaomi logo
MiMo-V2-Flash
xiaomi
81.7$0.09/1M
Links
Info
AnthropicPricing explorerDevelopers · API
Research
Technical Report
Documentation
API DocsPlayground
Community
@Anthropic
BenchGecko API
claude-opus-4-6-fast
Specifications
  • Typemultimodal
  • Context1.0M tokens (~500 books)
  • ReleasedApr 2026
  • LicenseProprietary
  • Statusexpired
  • Cost / Message~$0.210
Available On
Anthropic logoAnthropic$30.00
Categories
knowledgeagenticspeedsafety
Learn More
context-windowtransformertokens
Share & Export
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Related Models
Anthropic logoClaude Fable 5
83.6
PaLM 2-L
81.8
xiaomi logoMiMo-V2-Flash
81.7
OpenAI logoGPT-5.1-Codex-Max
85.6
Claude Opus 4.6 (Fast) is a proprietary multimodal AI model by Anthropic, released in April 2026. It has an average benchmark score of 83.3. Context window: 1M tokens.

Related Models

Claude Fable 5 · AnthropicPaLM 2-L · UnknownMiMo-V2-Flash · xiaomiGPT-5.1-Codex-Max · OpenAIGPT-5.6 Sol · OpenAI

Benchmarks

Chatbot Arena Elo — CodingChatbot Arena Elo — OverallMASKArtificial Analysis — Agentic IndexProfessional Reasoning — Finance

Related Pages

Anthropic · ProviderAnthropic · EconomyAll ModelsCompare ModelsPricingDevelopers · APIContext Window · Glossary

Key facts · as of 2026-06-29

  • Claude Opus 4.6 (Fast) by Anthropic. BenchGecko score 83.3, rank 15 of 312 scored models (normalized average of public benchmark scores).
  • List price $30.00 input · $150.00 output per 1M tokens (as of 2026-06-29).

How to cite · data as of 2026-06-29

Claude Opus 4.6 (Fast) · benchmarks, pricing and providers. BenchGecko, data as of 2026-06-29. https://benchgecko.ai/model/claude-opus-4-6-fast

Credit "Source: BenchGecko" with a link. Prices per provider and Gecko Tests are BenchGecko data (CC BY 4.0); benchmark scores keep their original source, listed in the JSON. JSON · llms.txt · MCP