GPT-6.1 Terra vs. Claude Opus 5.5: Cheaper and faster in three tests at max
Comments on “GPT-6.1 Terra vs. Claude Opus 5.5: Cheaper and faster in three tests at max”
3 judges. Scored by all three judges. Only the day’s top stories get the claim check. How far stories are checked
In a self-run comparison of GPT-6.1 Terra and Claude Opus 5.5 across three synthetic tests, Terra tied Opus on a browser-based release triage task at roughly one-sixth the estimated uncached token cost, and outscored it on a cell-tracking coding task.
Why it ranked
No. 68 of 107 with a score of 0.59. The panel rated it highest on new information (0.87) and technical depth (0.76), lowest on significance (0.47). Placed No. 68, No. 58 by score alone: the 24th AI & machine learning story of the day (−0.080). The placement terms move stories; they are not part of the score.
- AI judgeJudge 2claude-haiku-5-5
- Hands-on, self-run comparison of two frontier LLMs with cost and token data and caveats about single runs; substantive for AI builders, but narrow benchmarking with limited generalizability and an unrelated closing promo line.
- AI judgeJudge 3gpt-5.6-luna
- Direct model testing includes reproducible task descriptions, token/cost accounting, scores, and important caveats, making it useful to AI builders. Evidence is limited by one final run per model and self-designed benchmarks; the promotional appendix is incidental.
Each judge wrote its line after answering the rubric, with the site and the author still hidden. Every answer behind this is in the table under Score.
Score
0.59total under rubric v2.3
- Significance0.47
- Reader interest0.70
- Audience breadth0.62
- Practical relevance0.69
- Substantiated0.75
- Technical depth0.76
- New information0.87
- Counts against: Promotional0.09
- Counts against: Overclaim0.33
Each judge’s answer per question (0–1), their mean and spread, and what the question adds to the score (weight × mean).
| Question | Judge 1 | Judge 2 | Judge 3 | Mean | Spread | Weight | Contribution (weight times mean) |
|---|---|---|---|---|---|---|---|
| SignificanceHow much does this change what people in tech know or can do? | 0.51 | 0.35 | 0.55 | 0.47 | 0.20 | +0.24 | +0.113 |
| Reader interestWould a well-informed senior engineer or tech founder want to read this today, and likely pass it on? | 0.63 | 0.60 | 0.88 | 0.70 | 0.28 | +0.26 | +0.183 |
| Audience breadthHow many people who build technology does it concern? | 0.65 | 0.50 | 0.72 | 0.62 | 0.22 | +0.13 | +0.081 |
| Practical relevanceHow useful is it to someone who builds software or tech products? | 0.68 | 0.60 | 0.78 | 0.69 | 0.18 | +0.22 | +0.151 |
| SubstantiatedHow well is it backed? Consider whether it is the primary source, and whether its main claims come with data, code, a demo, a reproducible method or citations. | 0.86 | 0.60 | 0.78 | 0.75 | 0.26 | +0.05 | +0.037 |
| Technical depthHow technically substantive is it? | 0.91 | 0.65 | 0.72 | 0.76 | 0.26 | +0.05 | +0.038 |
| New informationDoes it contain information absent from the stories covered in the last 7 days (list provided)? | 0.86 | 0.80 | 0.96 | 0.87 | 0.16 | +0.05 | +0.044 |
| PromotionalIs it mainly marketing with little substance (a press release, ad or sponsored post with no real information)? A launch post that carries real news is not promotional. | 0.09 | 0.10 | 0.08 | 0.09 | 0.02 | −0.19 | −0.017 |
| OverclaimDo the headline or conclusions claim more than the body supports? | 0.47 | 0.35 | 0.18 | 0.33 | 0.29 | −0.11 | −0.037 |
| Sum of contributions | +0.593 | ||||||
| Claim-check penalty | 0.000 | ||||||
| Total, as published | 0.593 | ||||||
Spread is the highest minus the lowest judge answer. marks a spread above 0.40: the judges disagree, and the story is marked contested.
The badge for this ranking, for the author's page or anyone's: one line of HTML, and it links back here.
<a href="https://rubric.hrih.si/editions/2026-11-03/68/"><img src="https://rubric.hrih.si/badge/2026-11-03/68.svg" alt="Ranked #68 on Rubric, 3 Nov 2026" width="238" height="28"></a>Also covered by
No other coverage was clustered with this story.
Elsewhere
Elsewhere: HN 1 pts, not on front page
Recorded for context only, checked 3 Nov 2026, 05:47 UTC. It played no part in the ranking.