Summarise · 3 checks · max 400 tokens · benched 2026-09-16
OpenAI models side by side on "One-sentence changelog summary": GPT-5.4 Nano scores 9/10; GPT-5.4 Nano is the cheapest answer scoring 8+ at $0.09 per 1,000 runs. Outputs, checks, judge reasons, latency and cost.
User
Summarise this release note in one sentence of at most 30 words. Output only the sentence. Release 4.7.0: The public API now enforces a rate limit of 600 requests per minute per key (previously unlimited). Requests over the limit return HTTP 429 with a Retry-After header. Webhook deliveries are now signed with HMAC-SHA256 and the old unsigned mode will be removed in 4.9. We also fixed a bug where exporting more than 10,000 rows produced an empty file.
Rubric for the judge: A single accurate sentence that prioritises the rate limit and signed webhooks; no bullet list, no preamble.
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.
openai/gpt-5.5
117 in · 48 out (18 reasoning) · 15 words · checks 2/3
Release 4.7.0 adds API rate limits, signed webhooks, and fixes large exports returning empty files.
Judge: Accurate single sentence under 30 words (14 words) that prioritises rate limits and signed webhooks as required, with no preamble or bullet list.
openai/gpt-5.4
117 in · 65 out (11 reasoning) · 22 words · checks 2/3
Release 4.7.0 adds a 600-requests-per-minute API rate limit with 429/Retry-After responses, signs webhooks with HMAC-SHA256, and fixes empty exports over 10,000 rows.
Judge: Accurate single sentence under 30 words (27 words), prioritizes rate limit and signed webhooks as required, no preamble or bullets, though could have been slightly more explicit about the deprecation timeline.
openai/gpt-5.4-mini
117 in · 177 out (131 reasoning) · 19 words · checks 1/3
Release 4.7.0 adds a 600-requests-per-minute public API limit, signs webhooks with HMAC-SHA256, and fixes empty exports over 10,000 rows.
Judge: Accurate single sentence under 30 words (19 words), prioritizes rate limit and signed webhooks as required, no preamble or bullets, though could have mentioned the HTTP 429 response for completeness.
openai/gpt-5.4-nano
117 in · 51 out · 23 words · checks 2/3
Release 4.7.0 adds a per-key 600-requests/min rate limit (HTTP 429 with Retry-After), signs webhook deliveries with HMAC-SHA256, and fixes exporting over 10,000 rows.
Judge: Accurate single sentence under 30 words (27 words), prioritizes rate limit and signed webhooks as required, no preamble or bullet list, minor: could emphasize deprecation of unsigned mode more explicitly.
openai/gpt-5.3-codex
117 in · 259 out (196 reasoning) · 29 words · checks 2/3
Release 4.7.0 adds a 600-requests/minute API key rate limit with HTTP 429/Retry-After, introduces HMAC-SHA256 webhook signing ahead of unsigned removal in 4.9, and fixes empty exports over 10,000 rows.
Judge: Accurate single sentence under 30 words (29 words), prioritizes rate limit and signed webhooks as required, no preamble or bullet list, minor: could emphasize the deprecation timeline slightly more clearly.
Summarise: A single accurate sentence that prioritises the rate limit and signed webhooks; no bullet list, no preamble. The deterministic checks are max_words, contains, regex.
If the judge's bar of 8/10 is good enough for you, GPT-5.4 Nano at $0.09 per 1,000 runs. If you need the top score, GPT-5.4 Nano at $0.09 per 1,000 runs.
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Re-run this prompt on OpenAI with your own OpenRouter key, or tweak the wording and see what changes.
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