# OpenAI Platform vs telli

OpenAI Platform records 234,678,639 monthly visits with -9.6% month-over-month growth and Paid pricing. telli records 30,992 monthly visits with -10.6% growth and Contact for Pricing pricing.

| Metric | [OpenAI Platform](https://openaitools.app/tool/openai) | [telli](https://openaitools.app/tool/telli) |
| :--- | :--- | :--- |
| Website URL | https://openai.com | https://www.telli.com |
| Categories | AI Models, AI API, Large Language Models (LLMs), AI Chatbot | AI Agent, AI Call Center, AI Customer Service, AI Voice Assistants |
| Pricing Model | Paid | Contact for Pricing |
| Monthly Visits | 234,678,639 | 30,992 |
| MoM Growth Rate | -9.6% | -10.6% |
| Primary Market | United States | Germany |
| Direct Visits | 105,101,079 | 9,080 |
| Review Score | 4.8 | 4.4 |
| Saved Count | 144 | 0 |
| Supported Platforms | Website | Website |

## OpenAI Platform

While ChatGPT serves end users, openai.com and the OpenAI Developer Platform (developers.openai.com) provide the foundational API, SDKs, and enterprise infrastructure powering thousands of production AI applications worldwide. In late 2026, OpenAI's API catalog is anchored by the GPT-6 and GPT-6.1 model suite—all featuring a 1.05-million-token context window and up to 128K output tokens. The lineup spans GPT-6 Astra for frontier reasoning and mission-critical research, GPT-6.1 Sol for near-Astra intelligence at one-fifth the price, GPT-6.1 Terra for fast visual reasoning and computer use, and GPT-6 Luna for ultra-high-volume, low-latency tasks, alongside specialized models like `gpt-5.3-codex` and `gpt-6-astra-law`.

The OpenAI Platform has evolved well beyond basic chat completion endpoints. Through the unified `v1/responses` API, developers can orchestrate stateful multi-step agents equipped with built-in server-side tools—including live web search, vector file search, code interpreter sandboxes, and GUI computer use—without stitching together external orchestration frameworks. Every flagship model supports configurable reasoning effort (`none`, `low`, `medium`, `high`, `xhigh`, and `max`), strict JSON schema Structured Outputs, and multimodal image/audio inputs, while `gpt-live-1` powers per-second billed speech-to-speech voice agents.

OpenAI bills API usage on a transparent consumption model scaled across usage tiers (Build, Launch, and Grow, scaling up to 40M+ tokens per minute). In 2026, aggressive price cuts on the 6.x generation dropped entry-level intelligence on GPT-6 Luna to $0.10 per million input tokens and $0.50 per million output tokens, while GPT-6.1 Sol runs at $2/$10 and flagship GPT-6 Astra sits at $10/$50. Engineering teams can cut spend by 90% on repeated context using automatic Prompt Caching, save 50% on asynchronous workloads via the Batch API, and enforce regional data residency with a 10% compliance uplift.

**Pricing & Plans:** Usage-based pay-per-token API billing: GPT-6 Astra at $10/1M input and $50/1M output tokens; GPT-6.1 Sol at $2/1M input and $10/1M output; GPT-6.1 Terra at $1/1M input and $5/1M output; GPT-6 Luna at $0.10/1M input and $0.50/1M output; GPT-Live-1 voice at $0.05/minute; 90% discount on cached inputs and 50% off via Batch API.

- **GPT-6 & GPT-6.1 Model Lineup with 1.05M Context:** Spanning GPT-6 Astra ($10/$50 per MTok), GPT-6.1 Sol ($2/$10), GPT-6.1 Terra ($1/$5), and GPT-6 Luna ($0.10/$0.50), all with a 1,050,000-token context window and 128K max output.
- **Configurable Reasoning Effort Controls:** Tune thinking token budgets per API request across six granularity levels (`none`, `low`, `medium`, `high`, `xhigh`, `max`) to balance latency, accuracy, and cost.
- **Responses API & Native Computer Use Tools:** Combine model inference with hosted web search, file search, function calling, and autonomous GUI computer-use actions in a single stateful API call.
- **GPT-Live-1 Realtime Voice API:** Build ultra-low-latency multimodal voice agents billed per second ($0.05/minute) without rounding up to whole minutes.
- **90% Prompt Caching Discount & Batch API:** Cached input tokens bill at just 10% of standard input rates, while asynchronous 24-hour Batch API jobs cut both input and output token costs by 50%.

**Strengths:** 100-fold cost flexibility from GPT-6 Luna ($0.10/$0.50 per 1M tokens) up to frontier GPT-6 Astra ($10/$50 per 1M tokens); Unified 1.05M-token context window and 128K output limit across the entire flagship GPT-6 and GPT-6.1 family; 90% discount on cached input tokens and 50% Batch API discount dramatically reduce production inference bills; Industry-standard SDKs, Structured Outputs, and built-in Responses API tools minimize boilerplate agent code

**Limitations:** Long-context requests exceeding the standard window threshold trigger roughly 2x higher per-token billing rates; Flagship GPT-6 Astra ($10 input / $50 output per 1M tokens) is significantly more expensive than Claude Opus 5.5 ($4/$20) and Grok 4.7 ($2/$6); Regional data residency endpoints incur a 10% price uplift on models released after March 2026

[Profile (Markdown)](https://openaitools.app/tool/openai.md)

## telli

telli is an AI voice platform built around the idea that a phone agent should not just talk, it should finish the job. Agents handle inbound and outbound calls in more than 30 languages with local accents and cultural context, qualify intent, book and confirm appointments against real calendar availability, send reminders, gather data, run satisfaction surveys and follow up on overdue payments. The platform is model-agnostic, using the best available voice and language models rather than locking customers to one provider, with a curated voice library plus voice cloning so agents stay on brand.

Teams assemble agents in telli Studio, a no-code builder where changes to how a conversation behaves are made in natural language. A knowledge base of documents and FAQs keeps answers grounded, native CRM connections and API access let agents pull context and push results, and a library of pre-built actions plus custom ones lets them take real-time steps mid-call. Contact management stays in sync with the CRM, phone numbers can be provided by telli or brought via SIP trunking, and smart dialing optimises call timing and retries for higher pickup rates.

On the improvement side, telli offers live monitoring of active calls, real-time dashboards covering conversion rates, call duration and outcomes, structured and custom call outcomes, review of recordings and full transcripts, and evaluations that flag calls needing attention. An assistant named Charlie helps teams build and refine agents, automate post-call workflows and analyse results conversationally. telli is a German company (telli technologies GmbH) that highlights GDPR and EU AI Act alignment as part of its trust positioning, and it serves B2C brands across industries such as real estate, insurance, recruiting, energy, finance, retail, telecom, travel and logistics. Pricing is quote-based, with a free trial and a bookable demo as the entry points.

**Pricing & Plans:** telli does not publish list prices; it offers a free trial and demo booking, then quotes custom plans based on call volume, languages and integration needs.

- **No-code agent builder:** telli Studio lets teams create and refine agents by describing the conversation in natural language, without engineering work.
- **30+ language voice agents:** Deploy agents with native fluency, local accents and cultural context across 30+ languages, with curated voices and optional voice cloning.
- **Real-time actions and workflows:** Pre-built and custom actions let agents act during a call, while post-call workflows push outcomes into connected systems automatically.
- **CRM and telephony integrations:** Native Salesforce and HubSpot connections plus API access, with telli phone numbers or bring-your-own via SIP trunking.
- **Analytics, QA and live monitoring:** Live call views, conversion and duration dashboards, structured outcomes, transcripts, recordings and pass/fail evaluations keep quality visible.

**Strengths:** Agents complete tasks such as scheduling and payment collection rather than only conversing; Model-agnostic architecture with 30+ languages, local accents and voice cloning; No-code Studio plus an AI assistant keep agent iteration fast; Strong CRM, telephony and workflow integrations with documented GDPR and EU AI Act alignment

**Limitations:** No public price list, so budgeting requires a sales conversation; Enterprise-oriented setup and integrations take effort to configure well; Live B2C calling requires careful attention to local consent and compliance rules

[Profile (Markdown)](https://openaitools.app/tool/telli.md)

## Frequently Asked Questions

### How do OpenAI Platform and telli compare in monthly traffic?

OpenAI Platform has 234,678,639 monthly visits, while telli has 30,992. Traffic estimates describe audience size, not product quality.

### How do their growth rates compare?

OpenAI Platform has a month-over-month growth rate of -9.6%; telli has -10.6%.

### How does pricing compare?

OpenAI Platform: Paid. Usage-based pay-per-token API billing: GPT-6 Astra at $10/1M input and $50/1M output tokens; GPT-6.1 Sol at $2/1M input and $10/1M output; GPT-6.1 Terra at $1/1M input and $5/1M output; GPT-6 Luna at $0.10/1M input and $0.50/1M output; GPT-Live-1 voice at $0.05/minute; 90% discount on cached inputs and 50% off via Batch API. telli: Contact for Pricing. telli does not publish list prices; it offers a free trial and demo booking, then quotes custom plans based on call volume, languages and integration needs.

## Alternatives

| # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Profile (Markdown) |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 1 | [Google AI Studio](https://openaitools.app/tool/google-ai-studio) | 112,620,020 | +2% | Freemium | Provides direct API access to Google's Gemini models with generous free prototyping tiers, but lacks OpenAI's ecosystem breadth. | [.md](https://openaitools.app/tool/google-ai-studio.md) |
| 2 | [Qwen 4 (Alibaba Qwen4)](https://openaitools.app/tool/qwen-4) | 35,101,353 | -6.2% | Freemium | Alibaba Cloud's 4th-generation multimodal AI assistant and foundation model lineup (Qwen4-Max, Qwen4-Plus, Qwen4-Flash & open-weight Qwen4-27B) with 1M context. | [.md](https://openaitools.app/tool/qwen-4.md) |
| 3 | [OpenRouter](https://openaitools.app/tool/openrouter-ai) | 19,941,437 | -6.2% | Paid | Unifies hundreds of third-party models under a single API key, offering greater model choice than OpenAI's curated catalog. | [.md](https://openaitools.app/tool/openrouter-ai.md) |
| 4 | [BigModel](https://openaitools.app/tool/bigmodel) | 5,700,686 | -17% | Freemium | Provides developer APIs for Zhipu AI's proprietary GLM models, serving as an alternative enterprise foundation model stack. | [.md](https://openaitools.app/tool/bigmodel.md) |
| 5 | [fal.ai](https://openaitools.app/tool/fal-ai) | 3,093,684 | -3.7% | Paid, pay-as-you-go usage-based pricing | Optimized for lightning-fast serverless execution of generative media and image models, rather than general text LLMs. | [.md](https://openaitools.app/tool/fal-ai.md) |
| 6 | [Dialpad](https://openaitools.app/tool/dialpad) | 2,763,687 | +10.7% | Paid | The AI platform for customer experience and business communications | [.md](https://openaitools.app/tool/dialpad.md) |
| 7 | [Together AI](https://openaitools.app/tool/together-ai) | 1,645,930 | +64.9% | Freemium, Paid | Specializes in high-performance serverless inference and dedicated GPU clusters for open-source models, bypassing closed commercial restrictions. | [.md](https://openaitools.app/tool/together-ai.md) |
| 8 | [Replicate AI](https://openaitools.app/tool/replicate-ai) | 904,038 | -8.4% | Paid | Focuses heavily on running and fine-tuning open-source vision and language models via simple APIs, unlike OpenAI's hosted closed models. | [.md](https://openaitools.app/tool/replicate-ai.md) |
| 9 | [JustCall](https://openaitools.app/tool/justcall) | 780,285 | +11.8% | Paid | AI communication platform for sales and support teams | [.md](https://openaitools.app/tool/justcall.md) |
| 10 | [Atlas Cloud](https://openaitools.app/tool/atlas-cloud) | 777,031 | -16.4% | Paid | One OpenAI-compatible API for 500+ image, video, audio, and LLM models | [.md](https://openaitools.app/tool/atlas-cloud.md) |

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Source: https://openaitools.app/compare/openai-vs-telli

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