Model comparison
Claude Fable 5.2 vs Opus 5.5 for Planning and Review
Creative teams usually need a model decision for one kind of work. We compared Anthropic's published release evidence and direct API rates for Claude Fable 5.2 and Opus 5.5. The example below turns the comparison into an acceptance test for a creative planning job.
The quick answer
Start with Opus 5.5 when a repeatable task has a clear checklist and its lower listed API rates matter. Include Fable 5.2 in the trial when the task requires reconciling a larger set of inputs or reviewing charts and screenshots. Judge each model against the same source packet and count repair work.
| Criterion | Fable 5.2 | Opus 5.5 |
|---|---|---|
| Standard API input and output per million tokens | $8 and $40 | $4 and $20 |
| Chartography without tools | 73.4% | 64.4% |
| Context and maximum output | 1M and 128K tokens | 1M and 128K tokens |
Fable 5.2 for high-friction decisions
Try it on a decision with evidence spread across a brief, product screenshots and a chart. Give each source an identifier and ask for a finding log. The chart benchmark is relevant to that trial. It still leaves aesthetic judgment and business priorities to the team's review rubric.
Opus 5.5 for a repeatable baseline
For a weekly creative checklist, the recurring task may simply be mapping approved claims to placements and flagging missing assets. Opus 5.5 offers lower listed rates for those repeated requests. Use its output as the baseline for rework and reviewer time before paying for an escalation.
Run the same fictional handoff twice
A brand manager has four assets for a fictional kettle launch and a brief specifying three approved claims. Ask each model for a channel plan and a source ID beside every claim. Require it to flag any missing asset. Mark a plan rejected if it invents a warranty or changes a placement's dimensions.
Compare accepted work instead of first replies
Record the raw token charges, number of repairs, review minutes and whether the final handoff passes. The better model for a solo creator may be the one with a shorter repair loop. A higher-volume team may choose one default and route only exceptions that meet a written rule.
Keep the design decision on the board
Place the approved handoff beside the four originals in Ciyo. Give each planned asset an owner and a clear question. That preserves the value of the model's review while giving the design team a visual place to resolve it.
Write the escalation rule in terms of a failed check
For the fictional kettle launch, an escalation can be specific: Opus still assigns an unsupported warranty after one correction, or cannot match an approved claim to the correct screenshot. Send the same source packet and acceptance rule to Fable. Do not give the second model extra facts that the baseline never received.
If both outputs pass, compare total charges and reviewer effort. If neither passes, fix the source packet or complete the unresolved check manually. A solo creator can keep this log as a few notes; an agency can group the same cases by client and placement.
Frequently asked questions
Does Opus cost exactly half as much per project?
The standard direct API rate is half per uncached input or output token. Usage and rework can differ, so calculate the actual project cost from both runs.
Which model is better for visual work?
Use a screenshot or chart trial that reflects the actual task. The chart score covers a specific recognition task, and your team still needs to approve creative direction.
Build a shared review board
Keep both versions of the brief and the approved visual handoff together so a reviewer can trace each placement to its source.