MiniMax M3 vs MiniMax M2.7 vs MiniMax M2.5 on invoice text to json
Minimax models side by side on "Invoice text to JSON": MiniMax M2.5 scores 10/10; MiniMax M2.5 is the cheapest answer scoring 8+ at $0.22 per 1,000 runs. Outputs, checks, judge reasons, latency and cost.
The prompt every model received
System
You are a data extraction engine. Reply with JSON only, no prose, no code fences.
User
Extract the fields below from the invoice text and return one JSON object with exactly these keys: vendor (string), invoice_number (string), total (number), currency (ISO 4217 string), due_date (YYYY-MM-DD string).
Invoice text:
Northwind Print Co.
Invoice INV-2041
Issued: 15 September 2026
Payment due: 15 October 2026
Items: 500 x A5 flyers @ 1.20 = 600.00; 4 x roll-up banners @ 171.13 = 684.50
Total due: USD 1,284.50
Thank you for your business.
Rubric for the judge: Valid JSON with the five keys, numeric total 1284.5, ISO due date, no extra keys or commentary.
Side by side
Every cell is one OpenRouter call at temperature 0 with the prompt's token cap and reasoning effort "low" where the model supports it. Cost is usage × the catalogue rate in models.json. Quality is one judge call to anthropic/claude-haiku-4.5 against the prompt's rubric, cached per prompt version.
MiniMax M3
minimax/minimax-m3
10/10
Latency
5.4s
Cost
$0.00027
Per 1,000
$0.27
323 in · 148 out (100 reasoning) · 3 words · checks 6/6
Judge: Output is valid JSON with exactly the five required keys, correct numeric total (1284.50), proper ISO 4217 currency code (USD), correctly formatted due date (2026-10-15), no extra keys or commentary.
MiniMax M2.7
minimax/minimax-m2.7
1/10
Latency
11.8s
Cost
$0.00053
Per 1,000
$0.53
167 in · 400 out (385 reasoning) · 3 words · checks 0/6
Judge: Output is valid JSON with exactly the five required keys, correct numeric total (1284.50), proper ISO 4217 currency code (USD), correctly formatted due date (2026-10-15), no extra keys or commentary.
Frequently asked
▸What does this prompt test?
Extract JSON: Valid JSON with the five keys, numeric total 1284.5, ISO due date, no extra keys or commentary. The deterministic checks are json_valid, json_keys, contains, contains, contains, contains.
▸Which model should I pick for this task?
If the judge's bar of 8/10 is good enough for you, MiniMax M2.5 at $0.22 per 1,000 runs. If you need the top score, MiniMax M2.5 at $0.22 per 1,000 runs.
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