AI Index

Claude Opus 4.8

Language Anthropic Verified Released May 28, 2026
  • In TextImage Out Text
  • Reasoning· low, medium, high, xhigh, max
  • Reasoning can be off
  • Tool use
  • Structured output

Prices

8 offerings · prices as listed
Claude API Official Global · USD claude-opus-4-8
Conditions/ 1M tokensInputCache readCache writeOutput
5-minute cache1-hour cache
Standard $5.00$0.50$6.25$10.00$25.00
Batch $2.50———$12.50

Prices from Claude API pricing (checked Nov 8, 2026)

Standard: the price a request with no conditions pays (the headline price elsewhere on the site).

Details

Knowledge cutoff
Jan 2026
Open weights
—
Family
claude-opus
Model ID

Not stated on Anthropic’s pages: max input, max thinking budget, aliases.

Cited scores

From third-party leaderboards, not measured by us
  • Epoch Capabilities Index 159.9

    #18 of 118 listed models · CI 157.9–162.2

  • LMArena Text 1,482

    #21 of 163 listed models · high effort · CI 1,478–1,486 · 63,145 votes

    Also listed: Claude Opus 4.8 1,474

  • Epoch AI · Chess Puzzles 52%

    #15 of 85 listed models · max effort · ±5.02

    Also listed: low effort 29% · reasoning off 19%

  • Epoch AI · EBR-bench 28.6%

    #15 of 28 listed models · max effort · ±1.42

  • Epoch AI, 'Capabilities & benchmarking'. Published online at epoch.ai. Retrieved from 'https://epoch.ai/benchmarks'. Licensed CC BY 4.0. · License · as of Oct 28 – Nov 5, 2026
  • LMArena (Arena), leaderboard-dataset on Hugging Face, licensed CC BY 4.0 · License · as of Nov 8, 2026
  • EQ-Bench by Samuel J. Paech (eqbench.com; EQ-bench/EQ-bench-site on GitHub), MIT License. · License · as of Oct 24 – 28, 2026
  • LiveBench (White et al.), release 2026-06-25, livebench.ai, licensed CC BY-SA 4.0. This board, adapted from it, is shared under CC BY-SA 4.0. · License · as of Jun 25, 2026
  • Terminal-Bench 4.0 leaderboard (Marten, Shaw et al., Terminal-Bench; harbor-framework/terminal-bench on GitHub), licensed Apache-2.0. · License · as of Sep 29, 2026
  • changes we made

Included in coding plans

  • GitHub Copilot Pro+ $39.00 / month
    7,000 credits per month
    Variable additional usage on top of your base. Flex allotments may change over time.
    70 USD of usage per month
  • GitHub Copilot Max $100.00 / month
    20,000 credits per month
    Variable additional usage on top of your base. Flex allotments may change over time.
  • GitHub Copilot Business $19.00 / month
    1,900 credits per month
  • GitHub Copilot Enterprise $39.00 / month
    3,900 credits per month
  • Kiro Pro $20.00 / month
    1,000 credits per month
  • Kiro Pro+ $40.00 / month
    2,000 credits per month
  • Kiro Pro Max $100.00 / month
    5,000 credits per month
  • Kiro Power $200.00 / month
    10,000 credits per month

All coding plans →

News

All news →
  • Oct 30, 2026Retirement Anthropic retires Claude Opus 4.8 fast mode Anthropic will remove fast mode for Claude Opus 4.8 on November 30, 2026. Requests using fast mode after removal will return an error; Anthropic says to migrate to Claude Opus 5.5 to continue using it.

Changes

All changes →
  1. Now priced on Amazon Bedrock Input $5.00 · Output $25.00 · Cache write (5-minute cache) $6.25 · Cache write (1-hour cache) $10.00 · +1 more
  2. 3 new prices on Claude API Cache write (1-hour cache) $10.00 · Input (Batch) $2.50 · Output (Batch) $12.50

Sources

Anthropic’s official policies: data use, privacy, terms →

Anthropic · United States · anthropic.com

Snapshots, the same family and other models from this provider