Visible tradeoffsThis is an efficiency signal, so it belongs beside quality rather than being mistaken for quality.
source
Artificial Analysis
metric
First answer token (s)
judge
Speed / cost
direction
lower better
group id
aa_time_to_first_answer_current
domain
Chat / text
What it measures vs what it misses
✓ Measures
Visible response wait time for models that may emit reasoning tokens first.
✗ Misses
Output quality and total completion time.
Why this countsIt tests whether the model is actually useful in normal conversational turns, not just on narrow correctness tasks.Same-test ruleThis percentile only compares models inside the exact benchmark/version group shown here. It is not a universal score.What it missesIt does not prove deeper reasoning, tool use, or enterprise workflow reliability.
Fallback benchmark identity is visible for context but excluded from default ranking.
Identity
benchmark proxy (0.58)
Parsed from Artificial Analysis public leaderboard field `medianTimeToFirstAnswerTokenSeconds`. Backfilled from Claude Opus 4.1 via approved benchmark identity mapping map-claude-opus-4-to-4-1.
13.51s
#109 · Claude Opus 4.7
AA · Jun 24, 2026
Source label: Claude Opus 4.7 (Adaptive Reasoning, Max Effort)