Skip to content
aiqbench

Anthropic · model passport

Anthropic: Claude Haiku 5.5

claude-haiku-5-5
  • Cloud only
  • Proprietary licence
  • 1,000,000 context
  • Released 2026-10-13(first seen on LMArena)
6/27axes covered
Best percentile
91.5AIME (math)
Cohort standing
60.6median 60.7

What the data says

Benchmarked on 6 of 27 tracked axes. Every figure below is the model's own published result on that board.

Strongest axes

  • 91.5 pct — AIME (math) (98.9%)

Uneven: 72 percentile points between its best and worst axis — 91.5 pct on AIME (math) versus 19.5 pct on SimpleQA Verified.

  • AIME (math)91.5 pct98.9%Verify →
  • WebDev Arena79.9 pct1,585Verify →
  • GPQA Diamond79.6 pct89.6%Verify →
  • Humanity's Last Exam73.9 pct30.1%Verify →
  • Agent Arena50.9 pct0.015Verify →
  • SimpleQA Verified19.5 pct23.8%Verify →
  • OverallNot benchmarked
  • Vision ArenaNot benchmarked
  • Factuality ArenaNot benchmarked
  • Search ArenaNot benchmarked
  • Document ArenaNot benchmarked
  • FrontierMathNot benchmarked
  • ARC-AGI-2Not benchmarked
  • SimpleBenchNot benchmarked
  • LiveBenchNot benchmarked
  • BFCL v4 (function calling)Not benchmarked
  • SWE-bench Verified (live board)Not benchmarked
  • Terminal-Bench 4.0Not benchmarked
  • MMLU-Pro (Artificial Analysis)Not benchmarked
  • LiveCodeBench (Artificial Analysis)Not benchmarked
  • IFBench (Artificial Analysis)Not benchmarked
  • HHEM Hallucination (Vectara)Not benchmarked
  • SWE-bench VerifiedNot benchmarked
  • Terminal-BenchNot benchmarked
  • CodingNot benchmarked
  • Instruction followingNot benchmarked
  • Hard promptsNot benchmarked

Percentiles are the model's standing within each board's own population. Axes marked "not benchmarked" have no published result for this model — that is an absence of data, not a low score.

How to run it

Use it hosted

API model IDanthropic/claude-haiku-5.5
Context length1,000,000 tokens
Max output128,000 tokens
Acceptstext, image, file
Input price$0.10 per 1M tokens
Cached input price$0.01 per 1M tokens
Output price$0.50 per 1M tokens

API parameters this endpoint supports

Include reasoningMax completion tokensMax tokensReasoningReasoning effortResponse formatStop sequencesStructured outputsTool choiceTool callingVerbosity

Example request

curl https://openrouter.ai/api/v1/chat/completions \
  -H "Authorization: Bearer $OPENROUTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"anthropic/claude-haiku-5.5","messages":[{"role":"user","content":"Hello"}]}'

View on OpenRouter →

Identifiers, limits and prices are synced from the upstream source shown above. Any field we haven't synced is left out entirely rather than guessed.

  • claude-haiku-5.5-high stands at 60.6 (raw mean 65.9) — measured on 6 of 27 axes.

    standingtemplateVerify →

  • claude-haiku-5.5-high stands at 60.6 versus a cohort median of 60.7 across 169 models released within 180 days — below the peer median.

    cohorttemplateVerify →

Every claim is a computed fact from the current board data, phrased by a low-temperature model call and rejected by a validation gate if any number is not in the source row. How the leaderboards work →