Alibaba · via openrouter · published window from October 5, 2026

qwen/qwen3.8-flash: stability, speed and price

site endpoint id qwen--qwen3.8-flash

Historical measurements. No successful scored check in the past 24 hours. Scores, latency and cost below describe the 24-hour window ending at the last successful check, not current performance. Current rankings exclude this endpoint.

Last successful scored check: October 13, 2026 1:57 AM UTC

Core pass rate—

98.6%

historical: latest measured day

Speed—

3.6s

historical median per canary call · p95 35.3s

Cost—

$0.006

historical observed mean per scored run · probe mix differs by endpoint

Behaviour fingerprint51 runs

No change

1,421 responses · last adj. p 0.84 · Oct 13 3:25 AM UTC

Summary

qwen/qwen3.8-flash has no successful scored check in the past 24 hours. The last measured day ended at 2026-10-13T01:57:07.223Z; 98.6% of core checks passed. These historical measurements are excluded from current rankings.

During that historical measurement window, median canary latency was 3.6s (p95 35.3s) and the observed mean cost per scored run was $0.006. This does not describe the endpoint’s present performance.

Raven Alpha has 1,421 fingerprint responses over 51 runs in this endpoint’s selected series (1 other partition of history exist and are not shown here); the last recorded state is “no change” at 2026-10-13T03:25:02.324Z with an adjusted p of 0.84.

No incidents on record.

Written from the numbers on this page; every figure is in results.json.

Measurement record

Provider: Alibaba
Route: openrouter
Model requested: qwen/qwen3.8-flash
Model id returned: qwen/qwen3.8-flash
Scored calls in window: 611
Fingerprint responses: 1,421
Core score change: +0.0 pts across the published window
Status: Historical · no recent check
Suite: hard-v2 + starter-v2 · methodology v0.2

Capabilities over time

Historical measurement window by capability

Structured JSON100.0%

Schema-compliance regressions

Instruction following100.0%

Exact-format instruction drift

Arithmetic, answer only100.0%

Wrong arithmetic, or a model that starts showing its working when told to give only the number

Long context100.0%

Silent context truncation

Tool calling100.0%

Tool-use format regressions

Over-refusal90.0%

New safety layers refusing benign requests

Max-tokens respect100.0%

Truncation and limit changes

Incidents

No drift incidents so far. The detector re-checks every series after each run (6134 evaluations to date).

Raven Alpha: what it answers

40 runs, 1,113 responses, Oct 6 11:15 AM UTC to Oct 13 3:25 AM UTC. Each row is one fixed prompt with no right answer; the detector tracks the distribution of answers, not any single one. Filled cells: that run's most common answer was the overall favourite. Hollow cells: it was something else (normal for prompts with many good answers).

Prompt	Most common answers (share of all responses)	Median tokens
Pick a random integer between 1 and 50. Reply with only the number. int50 · short answer	46%37 36%27 13%23 5 distinct answers in 39 responses	53
Pick a number between 1 and 1000. Reply with only the number. int1000 · short answer	20%42 18%427 13%73 18 distinct answers in 40 responses	58
Name one color. Reply with one word. color · short answer	80%Blue 20%Red	34
Name one animal. Reply with one word. animal · short answer	63%Dog 33%Cat 5%Lion	37
Name a city in Europe. Reply with only the city name. city · short answer	98%Paris 3%London	40
Give me one random English noun. Reply with one word. noun · short answer	40%umbrella 10%apple 5%lighthouse 17 distinct answers in 40 responses	47
Flip a coin. Reply with only heads or tails. coin · short answer	63%heads 38%Tails	47
Pick a random letter of the alphabet. Reply with only the letter. letter · short answer	68%q 18%k 10%m 5 distinct answers in 40 responses	46
Name one fruit. Reply with one word. fruit · short answer	98%Apple 3%Mango	35
Suggest a name for a pet cat. Reply with only the name. cat · short answer	48%Luna 28%Milo 15%Whiskers 6 distinct answers in 40 responses	46
Name one programming language. Reply with only its name. lang · short answer	100%Python	36
Name a chemical element. Reply with one word. element · short answer	68%Oxygen 13%Hydrogen 10%Helium 5 distinct answers in 40 responses	39
Give one adjective that describes the ocean. Reply with one word. ocean · short answer	88%Vast 8%blue 5%deep	45
Name a famous scientist. Reply with only the name. scientist · short answer	65%Albert Einstein 30%Isaac Newton 5%Marie Curie	46
Pick a day of the week. Reply with one word. weekday · short answer	43%Monday 23%Tuesday 18%Friday 6 distinct answers in 40 responses	39
Name one musical instrument. Reply with one word. instrument · short answer	70%Piano 28%Guitar 3%Drum	37
Write one sentence about rain. rain · free text	8%Rain taps gently against the… 8%Rain softly taps against the… 5%Rain softly taps the window… 31 distinct answers in 40 responses	44
Explain what a variable is in programming, in two sentences. variable · free text	80%A variable is a named… 20%A variable in programming is…	77
List three uses for a brick. brick · free text	18%1. Building walls or foundations… 13%1. Building walls or structures… 10%1. Building a wall 2… 19 distinct answers in 40 responses	61
*What is 17 23?** mult · free text	33%17 × 23 = 391… 33%391… 23%17 * 23 = 391… 4 distinct answers in 40 responses	54
Write one sentence about the sea. sea · free text	35%The sea stretches endlessly beneath… 13%The sea stretches endlessly under… 10%The sea stretches endlessly, its… 15 distinct answers in 40 responses	46
Complete this sentence: The old house at the end of the street house · free text	95%The old house at the… 3%had been abandoned for years… 3%**The old house at the…	116
Describe a cat in exactly five words. catfive · free text	3%Fluffy, curious, playful, purring cat… 3%Soft furry purring independent mysterious… 3%furry little purring predator… 39 distinct answers in 39 responses	197
Give me a one-line motivational quote. quote · free text	8%Believe you can and you’re… 8%Every small step forward is… 5%"Success usually comes to those… 33 distinct answers in 39 responses	55
Say hello in a creative way, in one short sentence. hello · free text	8%Hello, stardust… 5%Hello, little spark of joy… 5%Hello, sunshine… 35 distinct answers in 39 responses	65
Write a haiku about autumn. haiku · free text	10%… 3%Crimson leaves fall soft, Wind… 3%Red leaves drift away Cold… 36 distinct answers in 39 responses	238
Write the first sentence of a mystery novel. story · free text	13%The body was found in… 8%The letter arrived on a… 5%By the time the last… 28 distinct answers in 39 responses	68
Give one tip for sleeping better, in one sentence. tip · free text	56%Keep a consistent sleep schedule… 36%Keep your bedroom cool, dark… 5%Keep your bedroom dark, cool… 4 distinct answers in 39 responses	52

Raw file: qwen--qwen3.8-flash.json (the same reference martingale check compares your endpoint against).

Each category is scored by deterministic checks only (Structured JSON, Tool calling and others). Read the methodology.