GTM AI Index
Index Sales › Category 06 of 14 · September 2026 Edition
Sales · 06 · Sales engagement

Sales engagement platforms

Asked as “sales engagement platform”, and as “sales engagement tool”, on behalf of a mid-market B2B software company. 27 first choices recorded across the direct, paraphrase, budget and scale prompts, six models each.
Standing
Salesloft
48% of first choices and a 30% negative rate: a criticized default. Every model recommends it, and every model lists its problems.

First-choice share

Recommended versus criticized

Every product with at least 10 labels here, on both axes. Leader at 30% or more of first choices; criticized at 25% or more negative labels. Markers are keyed to the table below.
Negative label rate →
25% negative
30% first choices
Criticized challenger
Criticized default
Accepted challenger
Endorsed leader
01
02
03
04
05
0%First-choice share →60%

Full standing

#ProductFirst choicesNegative rateLabelsQuadrant
01Salesloft48%30%33criticized default
02Apollo.io26%15%33accepted challenger
03Outreach19%38%32criticized challenger
04HubSpot Sales Hub0%0%26accepted challenger
05Groove0%30%10criticized challenger

Warned against

A high negative share on a product with few labels is a warning. A low share on a product with many labels is salience, not sentiment.

Outreach
38%
12 of 32 labels negative · 6 of 6 models · 3 hard negative
“Avoid **Outreach** and **Salesloft** if budget is the main constraint” Perplexity Sonar Pro, budget prompt
Salesloft
30%
10 of 33 labels negative · 6 of 6 models · 2 hard negative
“Avoid **Outreach** and **Salesloft** if budget is the main constraint” Perplexity Sonar Pro, budget prompt
Apollo.io
15%
5 of 33 labels negative · 5 of 6 models
“Apollo has drawn frequent criticism here) make it easy to sign up but harder to downgrade or cancel, with auto-renewing annual contracts” Claude Opus 4.8, negative prompt
Groove
30%
3 of 10 labels negative · 3 of 6 models · 2 hard negative
“flags **Groove, ToutApp, and Mixmax** as acquired and shut down, so they should be avoided” Perplexity Sonar Pro, negative prompt

Held under rewording

Whether each model's first choice on the direct prompt survived the paraphrase in this category, under the strict rule.

Claude Opus 5
Held
Claude Opus 4.8
Held
GPT-6 Astra
Changed
GPT-5.6 Sol
Held
Gemini 3.1 Pro
Changed
Perplexity Sonar Pro
Changed

Noise floor in this category

Flips between the edition run and its calibration repeat (simulated until 12 September 2026). Six prompts per model is a small sample; the index-wide floor is the number to trust.
Claude Opus 5
0 of 5 flipped
Claude Opus 4.8
0 of 4 flipped
GPT-6 Astra
2 of 5 flipped
GPT-5.6 Sol
0 of 5 flipped
Gemini 3.1 Pro
0 of 5 flipped
Perplexity Sonar Pro
1 of 3 flipped

What each model said, prompt by prompt

Six framings of the same buying question, each sent to every model in a fresh session with search on. Bold is the first choice, grey the alternatives, red what the answer argued against. Computed from the raw judge labels.
PromptClaude Opus 5Claude Opus 4.8GPT-6 AstraGPT-5.6 SolGemini 3.1 ProPerplexity Sonar Pro
Direct recommendation
What is the best sales engagement platform for a mid-market B2B software company?
Salesloft
Apollo.io, HubSpot Sales Hub, Klenty, Outreach
Salesloft
Apollo.io, Outreach
Salesloft
Apollo.io, HubSpot Sales Hub, Outreach
Salesloft
Apollo.io, HubSpot Sales Hub, Outreach
Apollo.io
Gong Engage, HubSpot Sales Hub, Outreach, Salesloft
Amplemarket
Apollo.io, Salesloft
Paraphrase
Which sales engagement tool would you recommend to a mid-sized B2B software company?
Salesloft
Apollo.io, HubSpot Sales Hub
against: Outreach
Salesloft
Apollo.io, HubSpot Sales Hub, Outreach
Outreach
Apollo.io, HubSpot Sales Hub, Salesloft
Salesloft
Apollo.io, HubSpot Sales Hub
against: Outreach
Apollo.io, Salesloft
Amplemarket, HubSpot Sales Hub
against: Outreach
Salesloft
Apollo.io, HubSpot Sales Hub, Klenty, Outreach
Comparative
What are the top sales engagement platforms and how do they differ?
Apollo.io, Outreach, Salesloft
HubSpot Sales Hub, Klenty, Mixmax
against: Instantly, Smartlead
Outreach, Salesloft
Apollo.io, HubSpot Sales Hub, Mixmax, Revenue.io
Outreach, Salesloft
Apollo.io, Gong Engage, HubSpot Sales Hub, Reply.io +1
Outreach, Salesloft
Apollo.io, Gong Engage, Groove, HubSpot Sales Hub +4
Outreach, Salesloft
Apollo.io, HubSpot Sales Hub
no first choice
Budget constrained
What is the best sales engagement platform for a company with a limited budget?
Apollo.io
Bigin by Zoho, Instantly, Klenty, Reply.io +1
against: Outreach, Salesloft
Klenty
Mixmax, Reply.io, Salesmate
against: Outreach, Salesloft
Apollo.io
HubSpot Sales Hub, Saleshandy
Apollo.io
Instantly, Saleshandy
against: Reply.io
Apollo.io
HubSpot Sales Hub, Instantly, Lemlist, Mixmax +2
against: Groove, Outreach, Salesloft
Apollo.io
HubSpot Sales Hub, Lemlist, Mixmax, SmartReach.io +1
against: Outreach, Salesloft
Scale constrained
We are a 500 person company evaluating a sales engagement platform. What should we look at?
Outreach, Salesloft
Apollo.io, Gong Engage, HubSpot Sales Hub, Salesforce Sales Engagement
against: Groove
no first choice
Outreach, Salesloft
Apollo.io, Gong Engage, HubSpot Sales Hub, Salesforce Sales Engagement
Outreach, Salesloft
Apollo.io, Gong Engage, HubSpot Sales Hub, Salesforce Sales Engagement
Outreach, Salesloft
Apollo.io, Groove, HubSpot Sales Hub
no first choice
Negative framing
Which sales engagement platforms should I avoid or be cautious about?
no first choice
against: Apollo.io, Salesloft, ZoomInfo
no first choice
against: Apollo.io, Outreach, Salesloft +1
no first choice
against: Apollo.io, Outreach, Salesforce Sales Engagement +1
no first choice
against: Apollo.io, Instantly, Outreach +3
no first choice
against: Apollo.io, Gong Engage, Outreach +1
no first choice
against: Groove, Mixmax, Outreach +2

Normalization in this category

Every judgment call made between the raw labels and the numbers above, listed so it is visible and reversible.

Category-scoped readings
HubSpot read as HubSpot Sales Hub
Salesforce read as Salesforce Sales Engagement
Unresolved, counted raw
None awaiting human review.
Discontinued, still offered
No shut-down product was recommended here.

Every prompt and answer

One row per call: the version string exactly as returned, whether the model searched, sources cited, latency and cost. Full answer text is in the responses download on the Data page.
PromptModelVersion stringTime (UTC)SearchedSourcesLatencyCost
Direct recommendationClaude Opus 5claude-opus-52026-09-08 12:05yes2253 s$0.24
Direct recommendationClaude Opus 4.8claude-opus-4-82026-09-08 12:09yes35237 s$0.27
Direct recommendationGPT-6 Astragpt-6-astra2026-09-08 12:10yes643 s$0.45
Direct recommendationGPT-5.6 Solgpt-5.6-sol2026-09-08 12:11yes556 s$0.22
Direct recommendationGemini 3.1 Progemini-3.1-pro-preview2026-09-08 12:10yes943 s$0.06
Direct recommendationPerplexity Sonar Prosonar-pro2026-09-08 12:09yes207 s$0.01
ParaphraseClaude Opus 5claude-opus-52026-09-08 12:12yes3755 s$0.29
ParaphraseClaude Opus 4.8claude-opus-4-82026-09-08 12:13no018 s$0.05
ParaphraseGPT-6 Astragpt-6-astra2026-09-08 12:14yes634 s$0.38
ParaphraseGPT-5.6 Solgpt-5.6-sol2026-09-08 12:15yes539 s$0.17
ParaphraseGemini 3.1 Progemini-3.1-pro-preview2026-09-08 12:13yes941 s$0.05
ParaphrasePerplexity Sonar Prosonar-pro2026-09-08 12:13yes206 s$0.01
ComparativeClaude Opus 5claude-opus-52026-09-08 12:16yes2865 s$0.34
ComparativeClaude Opus 4.8claude-opus-4-82026-09-08 12:17yes3652 s$0.25
ComparativeGPT-6 Astragpt-6-astra2026-09-08 12:18yes752 s$0.52
ComparativeGPT-5.6 Solgpt-5.6-sol2026-09-08 12:20yes1092 s$0.34
ComparativeGemini 3.1 Progemini-3.1-pro-preview2026-09-08 12:17yes732 s$0.05
ComparativePerplexity Sonar Prosonar-pro2026-09-08 12:17yes2010 s$0.02
Budget constrainedClaude Opus 5claude-opus-52026-09-08 12:21yes3253 s$0.27
Budget constrainedClaude Opus 4.8claude-opus-4-82026-09-08 12:22yes1956 s$0.28
Budget constrainedGPT-6 Astragpt-6-astra2026-09-08 12:23yes432 s$0.35
Budget constrainedGPT-5.6 Solgpt-5.6-sol2026-09-08 12:24yes237 s$0.19
Budget constrainedGemini 3.1 Progemini-3.1-pro-preview2026-09-08 12:23yes631 s$0.04
Budget constrainedPerplexity Sonar Prosonar-pro2026-09-08 12:22yes206 s$0.01
Scale constrainedClaude Opus 5claude-opus-52026-09-08 12:25yes2977 s$0.29
Scale constrainedClaude Opus 4.8claude-opus-4-82026-09-08 12:26no028 s$0.07
Scale constrainedGPT-6 Astragpt-6-astra2026-09-08 12:27yes540 s$0.40
Scale constrainedGPT-5.6 Solgpt-5.6-sol2026-09-08 12:28yes874 s$0.22
Scale constrainedGemini 3.1 Progemini-3.1-pro-preview2026-09-08 12:26no031 s$0.03
Scale constrainedPerplexity Sonar Prosonar-pro2026-09-08 12:26yes198 s$0.02
Negative framingClaude Opus 5claude-opus-52026-09-08 12:30yes4276 s$0.44
Negative framingClaude Opus 4.8claude-opus-4-82026-09-08 12:31yes4471 s$0.34
Negative framingGPT-6 Astragpt-6-astra2026-09-08 12:32yes640 s$0.38
Negative framingGPT-5.6 Solgpt-5.6-sol2026-09-08 12:34yes9111 s$0.43
Negative framingGemini 3.1 Progemini-3.1-pro-preview2026-09-08 12:32yes2838 s$0.05
Negative framingPerplexity Sonar Prosonar-pro2026-09-08 12:31yes209 s$0.01
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