--- title: GPT-4 Omni—Chat with the LLM canonical: https://telnyx.com/llm-library/gpt-4-omni --- # GPT-4 Omni—Chat with the LLM [Start building](https://telnyx.com/sign-up) ### Ask AI * [![GPT](https://d2efw2akbx8gaf.cloudfront.net/https://dotcom-payload-assets-prod.s3.us-east-1.amazonaws.com/cms-media/chatgpt_icon-ea55e09d.jpeg?width=92&format=webp)](https://chat.openai.com/?q=What makes Telnyx's global network different, breakdown call quality for normal phone calls and voice AI calls.) * [![Claude](https://d2efw2akbx8gaf.cloudfront.net/https://dotcom-payload-assets-prod.s3.us-east-1.amazonaws.com/cms-media/claude_icon-c7c8eef3.webp?width=92&format=webp)](https://claude.ai/new?q=What makes Telnyx's global network different, breakdown call quality for normal phone calls and voice AI calls.) * [![Perplexity](https://d2efw2akbx8gaf.cloudfront.net/https://dotcom-payload-assets-prod.s3.us-east-1.amazonaws.com/cms-media/perplexity_icon-cd5b74f1.webp?width=92&format=webp)](https://www.perplexity.ai/search?q=What makes Telnyx's global network different, breakdown call quality for normal phone calls and voice AI calls.) * [![Gemini](https://d2efw2akbx8gaf.cloudfront.net/https://dotcom-payload-assets-prod.s3.us-east-1.amazonaws.com/cms-media/gemini_icon-4ff1cbf4.webp?width=92&format=webp)](https://www.google.com/search?udm=50&aep=11&q=What makes Telnyx's global network different, breakdown call quality for normal phone calls and voice AI calls.) * [![Grok](https://d2efw2akbx8gaf.cloudfront.net/https://dotcom-payload-assets-prod.s3.us-east-1.amazonaws.com/cms-media/grok_icon-e588e5bd.webp?width=92&format=webp)](https://x.com/i/grok?text=What makes Telnyx's global network different, breakdown call quality for normal phone calls and voice AI calls.) GPT-4 Omni—Chat with the LLM # GPT-4 Omni OpenAI's omni model trained end-to-end across text, vision, and audio, delivering GPT-4-level reasoning at faster speeds and lower cost. [Start building](https://telnyx.com/sign-up)[GET Available Models](https://developers.telnyx.com/docs/inference/models) ## about The "o" stands for omni: unlike GPT-4V which routed vision through a separate encoder, [GPT-4o processes text, images, and audio through a single end-to-end neural network](https://developers.openai.com/docs/models/gpt-4o). It responds to audio input in roughly 320ms on average, runs 2x faster than GPT-4 Turbo at half the cost, and was the first model to bring GPT-4-class intelligence to ChatGPT's free tier. Licenseopenai Context window(in thousands) ## Explore Our LLM Library Discover the power and diversity of large language models available with Telnyx. Explore the options below to find the perfect model for your project. ### DeepSeek-V4-Flash-0731 OrganizationTelnyx Model NameDeepSeek-V4-Flash-0731 Taskstext generation Languages SupportedEnglish Context Length1,048,576 Parameters284.0B Model Tierunlisted Licensemit ### DeepSeek-V4.1-Flash ### gemma-2b-it ### gemma-4-26B-A4B-it ### gemma-4-31B-it ### Llama-3.3-70B-Instruct ### Meta-Llama-3.1-70B-Instruct ### Meta-Llama-3.1-8B-Instruct ### MiniMax-M2.7 ### MiniMax-M3-MXFP8 ### Kimi-K2.5 ### Kimi-K2.6 ### Kimi-K3 ### Qwen3-235B-A22B ### Qwen3.8-27B ### GLM-5.1-FP8 ### GLM-5.2 ### GLM-5.3 ### GLM-5.3-Flash ### claude-haiku-4-5 ### gemini-2.5-flash ### gemini-3.7-flash ### gpt-oss-120b ### gpt-4.1 ### gpt-4o ### gpt-4o-mini ### gpt-5 ### gpt-5.1 ### gpt-5.2 ### gpt-5.4 ### gpt-5.4-mini ### gpt-5.6-luna ### gpt-5.6-sol ### gpt-live-1 HOW IT WORKS ## Selecting LLMs for Voice AI [GET Available Models](https://developers.telnyx.com/docs/inference/models) ### Create an account Sign-up to the Telnyx platform to get access to our suite of intuitive AI tools. ### Choose GPT-4 Omni In the [AI Playground](https://portal.telnyx.com/#/app/next/ai/ai-playground "Telnyx AI Playground") select GPT-4 Omni from the dropdown. ### Enter your API key If you’re using a proprietary model, you’ll need your API key before prompting the LLM. Our vast selection of OS models allow you to get started right away. ### Prompt the LLM Get responses from an LLM in minutes, and scale with our [OpenAI-compatible APIs](https://developers.telnyx.com/docs/inference/getting-started "Inference API Quickstart"). Step 1/4 **RESOURCES** ## Get started Check out our helpful tools to help get you started. * ### Test in the portal Easily browse and select your preferred model in the AI Playground. [Test today](https://portal.telnyx.com/#/ai/assistants) ## Sign up and start building [Sign up](https://telnyx.com/sign-up)[Contact sales](https://telnyx.com/contact-us) ## faqs ### Is ChatGPT 4o free? GPT-4o is available in ChatGPT's free tier with usage limits. Paid subscribers get higher rate limits and priority access. API pricing is $2.50 per million input tokens through [OpenAI and inference providers](https://telnyx.com/llm-library/gpt-4-omni). ### What is GPT-4o and GPT-4? GPT-4o ("omni") is OpenAI's natively multimodal successor to GPT-4, processing text, images, and audio in a single model. It is [faster, cheaper, and more capable](https://openai.com/index/hello-gpt-4o/) than GPT-4 across most benchmarks. 128000 ## Use cases for GPT-4 Omni 1. **Native audio interaction:** GPT-4o processes speech end-to-end in a single neural network at 320ms average latency, generating responses with emotion, intonation, and pacing without a separate TTS step. 2. **Cross-modal reasoning:** Its unified architecture handles tasks that require jointly interpreting text, images, and audio, such as describing a photo while responding to a spoken question about it. 3. **Multilingual content production:** Significant improvements over GPT-4 Turbo on Arabic, Hindi, Mandarin, and other non-English benchmarks make it suited for global content generation at consistent quality. ## Quality Arena Elo1316 MMLU88.7 MT BenchN/A GPT-4o scores 88.7% on MMLU (5-shot) and 90.2% on HumanEval, surpassing GPT-4 (86.4% MMLU, 67.0% HumanEval) on the same sheet across both knowledge and code benchmarks. It runs at 2x the speed of GPT-4 Turbo at 50% lower cost while adding native audio and image processing. On multilingual tasks it significantly outperforms GPT-4 Turbo, particularly on Arabic, Hindi, and Mandarin. **llama-3.3-70b-versatile** 1318 **Llama-3.3-70B-Instruct** 1318 **GPT-4 Omni** 1316 **Claude-3-7-Sonnet-Latest** 1268 **GPT-4 1106 Preview** 1251 ## pricing Running GPT-4o through Telnyx Inference costs $2.50 per million input tokens and $10.00 per million output tokens. Processing 1,000,000 multimodal interactions at 1,500 tokens each would cost approximately $9,375, half the price of GPT-4 Turbo ($30,000) with faster speed and native audio/image support. ## What's Twitter saying? * Developers praise **GPT-4o** for its blazing speed and creativity in coding, ideal for rapid prototyping and brainstorming, though it requires human review for production due to occasional errors. * Reviewers highlight its **superior speed, half-price API, emotional voice expression**, and free access with advanced features, making it a game-changer even for non-paying users. * Some users report a **concerning decline** in technical accuracy and precision compared to earlier versions, with API responses underperforming versus the web console. | Organization | Model Name | Tasks | Languages Supported | Context Length | Parameters | Model Tier | License | | ------------ | ----------------------------------------------------------------------- | ---------------- | ------------------- | -------------- | ---------- | ---------- | ----------------- | | Telnyx | DeepSeek-V4-Flash-0731 | text generation | English | 1,048,576 | 284.0B | unlisted | mit | | Telnyx | DeepSeek-V4.1-Flash | text generation | English | 1,048,576 | 552.0B | small | mit | | google | [gemma-2b-it](https://telnyx.com/llm-library/gemma-2b-it) | text generation | English | 8,192 | 2.5B | small | gemma | | google | gemma-4-26B-A4B-it | text to-text | Multilingual | 262,144 | 25.8B | small | apache-2.0 | | google | gemma-4-31B-it | text generation | Multilingual | 131,072 | 30.7B | small | apache-2.0 | | meta-llama | [Llama-3.3-70B-Instruct](https://telnyx.com/llm-library/llama-3.3-70b-instruct) | text generation | Multilingual | 99,000 | 70.6B | large | llama3.3 | | meta-llama | [Meta-Llama-3.1-70B-Instruct](https://telnyx.com/llm-library/meta-llama-3-1-70b-instruct) | text generation | Multilingual | 99,000 | 70.6B | large | llama3.1 | | meta-llama | [Meta-Llama-3.1-8B-Instruct](https://telnyx.com/llm-library/meta-llama-3.1-8b-instruct) | text generation | Multilingual | 131,072 | 8.0B | small | llama3.1 | | minimaxai | MiniMax-M2.7 | text generation | Multilingual | 200,000 | 0 | large | minimaxai | | minimaxai | MiniMax-M3-MXFP8 | text generation | Multilingual | 1,000,000 | 428.0B | small | minimax-community | | moonshotai | [Kimi-K2.5](https://telnyx.com/llm-library/kimi-k2.5) | text generation | Multilingual | 256,000 | 1.0T | large | modified-mit | | moonshotai | Kimi-K2.6 | text generation | Multilingual | 262,144 | 1.0T | medium | modified-mit | | moonshotai | Kimi-K3 | text generation | English | 1,000,000 | 2.8M | large | MIT Modified | | Qwen | [Qwen3-235B-A22B](https://telnyx.com/llm-library/qwen3-235b-a22b) | text generation | English | 32,768 | 235.1B | large | apache-2.0 | | Telnyx | Qwen3.8-27B | text generation | English | 262,144 | 27.0B | small | Apache 2.0 | | zai-org | GLM-5.1-FP8 | text generation | Multilingual | 202,752 | 753.9B | large | mit | | zai-org | GLM-5.2 | text generation | English | 1,000,000 | 753.9B | medium | MIT | | Telnyx | GLM-5.3 | text generation | English | 1,048,576 | 753.0B | medium | glm-5.3 | | zai-org | GLM-5.3-Flash | text generation | English | 1,048,576 | 320.0B | small | mit | | anthropic | [claude-haiku-4-5](https://telnyx.com/llm-library/claude-haiku-4-5) | text generation | Multilingual | 400,000 | 0 | large | openai | | google | [gemini-2.5-flash](https://telnyx.com/llm-library/gemini-2.5-flash) | text generation | Multilingual | 400,000 | 0 | large | openai | | google | gemini-3.7-flash | text generation | Multilingual | 400,000 | 0 | large | openai | | groq | [gpt-oss-120b](https://telnyx.com/llm-library/gpt-oss-120b) | text generation | Multilingual | 400,000 | 0 | large | openai | | openai | gpt-4.1 | text generation | Multilingual | 400,000 | 0 | large | openai | | openai | [gpt-4o](https://telnyx.com/llm-library/gpt-4-omni) | text generation | Multilingual | 400,000 | 0 | large | openai | | openai | [gpt-4o-mini](https://telnyx.com/llm-library/gpt-4o-mini) | text generation | Multilingual | 400,000 | 0 | large | openai | | openai | gpt-5 | text generation | Multilingual | 400,000 | 0 | large | openai | | openai | gpt-5.1 | text generation | Multilingual | 400,000 | 0 | large | openai | | openai | [gpt-5.2](https://telnyx.com/llm-library/gpt-5.2) | text generation | Multilingual | 400,000 | 0 | large | openai | | openai | gpt-5.4 | text generation | Multilingual | 400,000 | 0 | large | openai | | openai | gpt-5.4-mini | text generation | Multilingual | 400,000 | 0 | large | openai | | openai | gpt-5.6-luna | text generation | Multilingual | 400,000 | 0 | large | openai | | openai | gpt-5.6-sol | text generation | Multilingual | 400,000 | 0 | large | openai | | openai | gpt-live-1 | speech to-speech | Multilingual | 400,000 | 0 | large | openai | * ### Explore the docs Don’t wait to scale, start today with our public API endpoints. [Get started](https://developers.telnyx.com/api-reference/assistants/list-assistants) * ### Stay up to date Keep an eye on our AI changelog so you don't miss a beat. [See updates](https://telnyx.com/release-notes) ### Is ChatGPT 4o still available? Yes, GPT-4o remains available in both ChatGPT and the API. It continues to be one of OpenAI's primary models alongside newer releases like GPT-4.1 and GPT-5, accessible through [multiple inference platforms](https://telnyx.com/llm-library/gpt-4o-mini). ### How do I access GPT-4o? GPT-4o is accessible through ChatGPT (free and paid tiers), the OpenAI API, and third-party [inference providers](https://telnyx.com/llm-library/gpt-4-omni). API access requires an OpenAI account with billing configured. ### What is GPT-4o best for? GPT-4o excels at multimodal tasks combining text, vision, and audio understanding, making it particularly strong for [real-time voice applications](https://telnyx.com/llm-library/gpt-4-omni) and document analysis. It also performs well on coding, reasoning, and creative writing tasks. ### How much does GPT-4o cost? GPT-4o is priced at $2.50 per million input tokens and $10 per million output tokens through the API. This is significantly cheaper than the original GPT-4 while delivering [better performance](https://en.wikipedia.org/wiki/GPT-4o) across most benchmarks. ### Is GPT-4o better than GPT-4? GPT-4o outperforms GPT-4 on most benchmarks while being faster and approximately 50% cheaper. Its native multimodal capabilities for [vision and audio processing](https://telnyx.com/llm-library/gpt-4-omni) represent a significant upgrade over GPT-4's text-first architecture.