Eight of fourteen models named RingCentral first on the direct prompt; one named 8x8. RingCentral was named by thirteen of the fourteen models and 8x8 by thirteen and RingCentral carries 49 labels and 8x8 37, so the shares are not directly comparable.
Named in three categories this edition.
Named in two categories this edition.
Share is the count of first choices across the direct, paraphrase, budget and scale prompts over all fourteen 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 business phone systems page.
Across every category in the October 2026 Edition, RingCentral and 8x8 were named in the same answer sixty-eight times, of the 188 answers naming RingCentral and the 88 naming 8x8. In those answers 8x8 took the first choice zero times and RingCentral thirty-three.
| Model | Direct | Paraphrase | Comparative | Budget-constrained | Scale-constrained | Negative |
|---|---|---|---|---|---|---|
| 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 | ||||||
| GPT-6 Luna | ||||||
| Muse Glimmer 30B |
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.
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Six of eight in this category shown.
“If you're an SMB without a dedicated IT team, this is a trap.” DeepSeek V4 Flash · negative prompt · hard negative
“Solid features but low Trustpilot scores (~2.2/5 from 1,800+ reviews) due to rigid contracts, billing disputes, slow support, and outages.” Grok 4.1 Fast · negative prompt · soft negative
“often cited as RingCentral, Nextiva, 8x8, and Vonage) are notorious for aggressive and highly restrictive sales contracts” Gemini 3.5 Flash · negative prompt · soft negative
“Best for most mid-market organizations, combining business phone service, video conferencing, team messaging, SMS, fax, and contact center capabilities” Claude Haiku 4.5 · direct prompt · first choice
“Best Overall for Deep Integrations & Customization ... request a demo from RingCentral (for its sheer capability and CRM depth)” Gemini 3.5 Flash · direct prompt · first choice
“Most balanced choice: RingCentral — it offers the deepest telephony features without forcing you into a specific ecosystem” Kimi K2 · paraphrase prompt · first choice
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Six of seven in this category shown.
“While 8x8 has strengths, it has significant red flags... budget-conscious growing teams may find pricing unpredictable.” Qwen 3.7 Flash · negative prompt · soft negative
“notorious for aggressive and highly restrictive sales contracts” Gemini 3.5 Flash · negative prompt · soft negative
“Support is consistently rated 1–2 stars on third-party sites.” DeepSeek V4 Flash · negative prompt · soft negative
“RingCentral MVP / 8x8 X Series: Full UCaaS, strong PBX features, good mid-market fit.” Kimi K2 · scale prompt · first choice
“I'd suggest RingCentral RingEX or 8x8 as the top choices” Kimi K2 · direct prompt · first choice
“If you're running both sales and support operations, 8x8 is worth a serious look given its native contact center capabilities.” DeepSeek V4 Flash · paraphrase prompt · alternative
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.