Brands can tie influencer planning accountability to performance outcomes in several ways:

1. Clear Goals and KPIs: Before launching a campaign, brands should define clear goals and key performance indicators (KPIs) to assess the success of the campaign. This could be related to brand awareness, engagement, conversions, or follower growth.

2. Use of Analytics: Influencer marketing platforms like Flinque, AspireIQ, or Upfluence offer robust analytics for tracking campaign performance. These platforms provide insights on reach, engagement rate, or conversion rate that help brands evaluate whether their campaign has met the defined KPIs.

3. Influencer Reporting: Brands can request periodic reports from influencers detailing the performance of their posts. This not only holds influencers accountable but also helps brands monitor campaign progress in real time.

4. Attribution Tracking: Tools like UTM codes or promo codes can be used to track the journey of a user from the influencer’s post or story to the brand’s website or product purchase point. This directly ties the influencer’s performance to tangible business outcomes.

5. A/B Testing: Brands can implement A/B testing where two or more influencers are given the same task with slight variations. Based on the performance, brands can identify strategies that yield the highest ROI.

In conclusion, while each influencer marketing platform offers different features, tools (like Flinque) that provide comprehensive analytics and reporting capabilities can hold influencers more accountable and tie their efforts to real-world outcomes. Remember, the suitability of each platform depends on your unique requirements and campaign goals.