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Anthropic · released 2026-05-28

Opus 4.8

Measured on 208 benchmarks.

29.4

#28 of 94 models · best at max

includes estimates: 35% of the mix is measured for this model

Strengths

  • Opus 4.8
  • Gemini 4 Carbon (#1)
  • Field median
bestField medianFrontierCode 2.0-…Terminal-Bench v4…AA-Briefcase v1.1AutomationBench-AATerminal-Bench-Sc…HLE-DiamondCritPt v2 Hard Su…AA-Omniscience v1…AA-Omniscience v1…GDP.pdf
  1. FrontierCode 2.0-AA15%22.5% est.#25 of 94
  2. Terminal-Bench v4-AA10%21.7%#33 of 94
  3. AA-Briefcase v1.115%1320#40 of 94
  4. AutomationBench-AA5%45.6%#47 of 94
  5. Terminal-Bench-Science-AA15%12.4% est.#19 of 94
  6. HLE-Diamond10%24.7% est.#25 of 94
  7. CritPt v2 Hard Subset10%34.6% est.#25 of 94
  8. AA-Omniscience v1.1 Accuracy10%41.0% est.#26 of 94
  9. AA-Omniscience v1.1 Non-hallucination5%48.5% est.#49 of 94
  10. GDP.pdf5%22.8%#18 of 94

Bars show where Opus 4.8 sits among the 94 ranked models on each benchmark (right is best); the tick is the field median.

Cost and speed

against 94 ranked models

Output speed

#59 fastest of 74

66 tok/sat max

Time to first token

#57 quickest of 74

54sat max

Token price

$0.764 per 1M tokens at API prices$0.013 on Claude Max 20x

97.0% cache read · 0.32% fresh input · 2.19% cache write · 0.51% output

Measured from T3 Code usage in Claude Code, Oct 27 to Nov 2, medium confidence. One app’s users, not everyone’s. $0.735 at the standard 97 / 2.5 / 0.5 mix.

Not measured for Opus 4.8: cost per task, time per task, output tokens per task (no published API price yet).

This ranking’s benchmarks

4 of 10 measured

agentic

AutomationBench-AA

241 results
  1. #106max of 24145.6%

Leader: Gemini 4 Carbon · 77.8%

agentic

AA-Briefcase v1.1

247 results
  1. #80max of 2471320

Leader: Sonnet 5.5 · 1814

economics

GDP.pdf

240 results
  1. #57max of 24022.8%

Leader: Muse Wonder Full · 32.6%

coding

Terminal-Bench v4-AA

238 results
  1. #72max of 23821.7%

Leader: Kimi K3.1 · 67.2%

All 208 benchmarks

show 204 more