Quality shortlist
Claude Fable 5.1 (max with fallback)
53
Index score
Publisher’s displayed index; fallback configuration retained.
AI models for reasoning & analysis
A prompt for your current assistant, checks for the result and evidence when you need an alternative.
What are you working on?
Only this choice is remembered on this device, when storage is available.
Your next step · Reasoning & analysis
Start with an assistant you already use
Use the prompt below, then check the result. Separate known facts from assumptions. Ask for the missing fact that would change the recommendation, then check that fact yourself.
Your text stays on this page. It is not saved, sent to AI or included in shared links.
Your ready-to-use prompt
Analyze [decision] using only these facts: [facts]. State assumptions, compare three options, and identify which missing information could reverse your recommendation. Give a concise rationale and a way to verify the conclusion. Distinguish evidence from estimates.
Fill any remaining brackets before sending.
Does the result do the job?
Use these checks before you trust or publish it.
- Uses the supplied facts correctly
- Makes assumptions explicit
- Considers credible alternatives
If it misses the mark, select “I want a better result” above. Consider another model when a clearer brief still leaves you stuck.
Why this recommendation?
AgentBoards editorial guidance
There is no evidence here that you need to switch. Try your familiar tool on a clearly defined task first; an app name does not tell us its exact model or capabilities.
The evidence behind the picks
Artificial Analysis · Intelligence Index · Higher index score is better within this benchmark.
Same rounded score
GPT-6 Astra (max)
53
Index score
Maximum reasoning configuration.
Compare effort settings
GPT-6 Astra (xhigh)
53
Index score
Same rounded index at a different effort setting.
What this cannot tell you: This is a composite evaluation, not a score for every reasoning task. Rounded scores can tie. Fallback and reasoning settings are part of each evaluated configuration.
Sources checked 2026-09-17 · Publisher snapshot date not supplied. This snapshot is due for review. Check the publisher before choosing.
If you compare alternatives
Start with one small example. Before committing, compare at least three representative examples using the same inputs, tools and settings; record failures too. AgentBoards has not run these models on your work.
- Uses the supplied facts correctly
- Makes assumptions explicit
- Considers credible alternatives
- Identifies uncertainty that changes the decision
- Produces a verifiable recommendation
Scores keep their publisher’s units and exact configurations. We do not average unrelated benchmarks. This is a curated shortlist, not a full leaderboard. Snapshots need review after 14 days; sponsorship cannot buy a recommendation.
Which AI would you use?
Six everyday tasks. Learn a useful trick with every answer.