Model specification · Anthropic

Claude Opus 4.6

anthropic/claude-opus-4.6

Opus 4.6 is Anthropic’s strongest model for coding and long-running professional tasks. It is built for agents that operate across entire workflows rather than single prompts, making it especially effective...

SpecificationsReported values
Context window
1M
Maximum output
128K
Architecture
text+image+file->text
Tokenizer
Claude
Knowledge cutoff
—
Moderated
Yes
Input modalities
textimagefile
Output modalities
text
Full pricingUSD where reported
PriceStandard
Input$5.00 / M
Output$25.00 / M
Benchmark indexesReported indexes
Intelligence
31.9
Coding
—
Agentic
—
Design Arena Elo
1250
Example workload costsStandard pricing only
WorkloadInput / outputCache shareEstimated cost
Quick check10K / 1K × 10%$0.075
Long analysis100K / 4K × 150%$0.375
Workday20K / 2K × 1,00030%$123.00
More from AnthropicAll Anthropic models
ModelContextInput / MOutput / MIntel.
Claude Opus 5.51M$4.00$20.0057.6
Claude Sonnet 5.51M$2.00$10.0056
Claude Fable 5.11M$10.00$50.0053.4
Claude Opus 51M$5.00$25.0050.8
Claude Fable 51M$10.00$50.0049.6
Claude Haiku 5.51M$0.100$0.50043.4
Claude Opus 4.81M$5.00$25.0041.8
Claude Opus 4.71M$5.00$25.0040.7
Claude Sonnet 51M$2.00$10.0038.2
Claude Sonnet 4.61M$3.00$15.0030.1
Claude Opus 4.5200K$5.00$25.0029.1
Claude Opus 4.1200K$15.00$75.0022.8