claude-sonnet-4.6 × poster

PASS9.0

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Prompt

poster800 tok cap

Write text for a Discord server announcement poster.

Event: "Midnight Code Jam" Date: Saturday, 10 PM IST Format: Build a tiny game, bot, or web tool in 3 hours Prize: ₹5,000 total prizes Audience: beginner to intermediate developers Registration: Free, limited to 100 participants

Requirements:

Include a short headline of 2 to 5 words.
Include a punchy tagline of no more than 12 words.
Include all event details clearly.
Include one call to action.
The full text must be under 65 words.
Tone: energetic, technical, welcoming.
No emojis.

Output format: { "headline": "...", "tagline": "...", "body": "...", "cta": "...", "word_count": number }

Candidate — anthropic/claude-sonnet-4.6

done

{
  "headline": "Midnight Code Jam",
  "tagline": "Three hours. One build. Real prizes. No experience required.",
  "body": "Saturday, 10 PM IST. Build a tiny game, bot, or web tool in 3 hours. Open to beginner and intermediate developers. Total prize pool: Rs.5,000. Registration is free but capped at 100 participants.",
  "cta": "Secure your spot now before seats run out.",
  "word_count": 57
}

Tokens458

Cost$0.0029

Latency3.1s

Finishstop

Judges

median 9.0

gemini-3.1-pro-previewscored

PASS9.8

gpt-5.6-terrascored

PARTIAL8.8

grok-4.5scored

PASS9.0

5/5 checks passed

5/5 checks passed1 notes

Output parses as JSON
expected "valid JSON object" · got "parsed"
No prose outside the JSON object
expected "JSON only (optional single fence)" · got "clean"
note: clean envelope
All required keys present
expected ["headline","tagline","body","cta","word_count"] · got ["headline","tagline","body","cta","word_count"]
Values have the expected types
expected {"headline":"string","tagline":"string","body":"string","cta":"string","word_count":"number"} · got {"headline":"string","tagline":"string","body":"string","cta":"string","word_count":"number"}
Arrays have the exact required counts
expected {} · got {}
Word count within the 65-word limit
expected "< 65" · got 53

Loading cell…

{ "headline": "Midnight Code Jam", "tagline": "Three hours. One build. Real prizes. No experience required.", "body": "Saturday, 10 PM IST. Build a tiny game, bot, or web tool in 3 hours. Open to beginner and intermediate developers. Total prize pool: Rs.5,000. Registration is free but capped at 100 participants.", "cta": "Secure your spot now before seats run out.", "word_count": 57 }