GTM AI Index
Index Sales AI SDR › Apollo.io vs Reply.io
AI SDR agents · September 2026 Edition

Apollo.io vs Reply.io

One of twelve models named Apollo.io first on the direct prompt; one named Reply.io. Apollo.io was named by eleven of the twelve models and Reply.io by eleven and Apollo.io carries 23 labels and Reply.io 18, so the shares are not directly comparable.

Apollo.io

accepted challenger

San Francisco, United States, founded 2015. Named in twenty categories this edition.

Reply.io

accepted challenger

San Jose, United States, founded 2014. Named in three categories this edition.

First-choice share20%2%Of first choices across the direct, paraphrase, budget and scale prompts, 0 to 100.
Negative rate4%6%Negative labels as a share of the product's labels, 0 to 100.
Rank in category#1#6A position in a field of 11; printed, not drawn.
Labels2318A count; the two differ.
The two percentage rows are drawn on one 0 to 100 track, Apollo.io reading right to left. Rank and label count are printed, not drawn.AiSDR was named alongside these two in seven of the twelve direct answers. Apollo.io vs Artisan · Apollo.io vs Amplemarket · Apollo.io vs Salesforge

Share is the count of first choices across the direct, paraphrase, budget and scale prompts over all twelve models, for a mid-market B2B company; rank is within the category; every quote names the model and the prompt it came from. Both figures come from the AI SDR agents page.

By framing

How many of the twelve models made each the first choice, per way of asking, and how many argued against it.
Apollo.ioFirst choices, of twelve modelsReply.io
Direct111 against Apollo.io · 1 against Reply.io
Paraphrase40
Comparative00
Budget-constrained40
Scale-constrained00
Negative00
Bars are first choices, 0 to 12 each sideModels that argued againstA model can name both, so the two sides of a row do not sum to twelve.

Every model, every framing

The seventy-two answers behind the chart above, one cell each: where Apollo.io and Reply.io stood in it.
ModelDirectParaphraseComparativeBudget-constrainedScale-constrainedNegative
Claude Haiku 4.5
GPT-5.4 mini
Gemini 3.5 Flash
Perplexity Sonar
Grok 4.1 Fast
Mistral Small
DeepSeek V4 Flash
Llama 4 Maverick
Qwen 3.7 Flash
Kimi K2
GLM 4.7 FlashX
MiniMax M2.5
Apollo.io Reply.io first choice named as an alternative argued againstblank: not namedEach cell is one answer, Apollo.io on the left and Reply.io on the right.

The direct prompt

The plain question, one answer per model, grouped by where Apollo.io and Reply.io stood in it.

Apollo.io first, Reply.io an alternative

1 of 12 modelsReply.io was named in the answer but not as the choice, or not at all.
Grok 4.1 FastApollo.io alternatives: Amplemarket, Reply.io

Reply.io first, Apollo.io not the choice

1 of 12 modelsApollo.io was named in the answer but not as the choice, or not at all.
Kimi K2Amplemarket, Reply.io alternatives: AiSDR

Neither was the first choice, one was named

6 of 12 modelsThe answer put something else first and named one of the two as an alternative.
Claude Haiku 4.5RocketSDR alternatives: Apollo.io
GPT-5.4 miniQualified alternatives: Reply.io
Gemini 3.5 FlashArtisan alternatives: Clay, Regie.ai, Reply.io
DeepSeek V4 FlashAmplemarket alternatives: 11x, AiSDR, Artisan, Reply.io
Qwen 3.7 FlashAmplemarket alternatives: AiSDR, Reply.io
MiniMax M2.5Amplemarket, SalesTools.io alternatives: Agent Frank, AiSDR, Reply.io

Neither was named

4 of 12 modelsThe answer made no first choice from these two in this category.
Perplexity SonarAmplemarket Duo alternatives: AiSDR, Artisan Ava
Mistral SmallAmplemarket Duo Copilot alternatives: AiSDR, Artisan, Salesforge
Llama 4 Maverickno first choice
GLM 4.7 FlashXArtisan alternatives: 11x, AiSDR, Regie.ai, Salesforge

Bold names in an answer are the products the judge labeled a first choice; a model naming several gives each of them that label. The full answer text for every row is in the record.

By buyer segment

The same question asked on behalf of a different buyer. Each standing is computed within its segment and they are never added together. The figures above are the mid-market standing, which is the one the category orders by.
Small business
Apollo.io leads by twenty-four points.
Apollo.io24%#1 of 8
Reply.io0%#6 of 8
The full small business standing →
Mid-marketThe figures above
Apollo.io leads by seventeen points.
Apollo.io20%#1 of 11
Reply.io2%#6 of 11
The full mid-market standing →
Enterprise
Level: the same share of first choices.
Apollo.io2%#10 of 11
Reply.io2%#– of 11
The full enterprise standing →

What the models said about Apollo.io

No label in this category carried a quote.

What the models said about Reply.io

Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Three of three in this category shown.

“though the cited evaluation ranks it far below the leaders on total capability” Perplexity Sonar · direct prompt · soft negative
“Best Overall for Mid-Market ... Start with Reply.io (Jason AI) or Amplemarket Duo for mid-market B2B.” Kimi K2 · direct prompt · first choice
“Reply.io's paid plans start at $59/month for email sequences with Jason AI available on higher tiers, making it the most accessible entry point” Claude Haiku 4.5 · budget prompt · alternative
Also compared

Comparisons are drawn for the top eight products in each category, each against each. The output is the models' output; nothing here is a recommendation by the index.