Grok API vs OpenAI API
Two model provider options for LLM API. When each fits, what it costs, who moves from one to the other, and what makers who chose it say.
OpenAI APIModel providerllms.txtIn Lovable, ReplitAsk your AI about this, with this page as the source:ChatGPT ↗Claude ↗Perplexity ↗
Which fits you
Choose Grok API if- Grok models with built-in web and X search, plus image, video and voice APIs.
Use it whenYour feature needs live posts from X or current web results in the model's answers.
Trade-offReal-time data only arrives when you enable the search tools, which are billed as tool calls.
Choose OpenAI API if- You want the strongest general models and the widest ecosystem of examples and integrations
Use it whenYou want one account that covers text, images, speech and embeddings, with the most examples to copy from.
Trade-offFrequent model and API changes to keep up with, and no option to run its hosted models elsewhere.
At a glance
| Grok API | OpenAI API | |
|---|---|---|
| Used by | 6 makers' products · 33 open-source projects | 734 makers' products · 481 open-source projects |
| Cost at default usageinput tokens 50 million tokens, output tokens 10 million tokens | — | $10/mo GPT-6 Luna |
| Downloads | 2.3M/wk4.8× vs npm | 34.1M/wk+61% vs npm |
| Pricing | Pay per token; image, video and voice priced per unit. · paid from Pay per token | Pay per token. · paid from Pay per token |
| Free tier | No | No |
| Open source | No | No |
| Incidents, 90 daysfrom its status page | no public status feed | 25+ (4 major) |
Cost as you grow
At 1M tokens OpenAI API costs less ($0.20 vs $1.75); and still does at 5B tokens ($1,000 vs $8,750).
The numbers, plan by plan
| Input tokens per month | Grok API | OpenAI API |
|---|---|---|
| 1 | $1.75 Grok 4.3 | $0.20 GPT-6 Luna |
| 5 | $8.75 Grok 4.3 | $1.00 GPT-6 Luna |
| 10 | $18 Grok 4.3 | $2.00 GPT-6 Luna |
| 50 | $88 Grok 4.3 | $10 GPT-6 Luna |
| 100 | $175 Grok 4.3 | $20 GPT-6 Luna |
| 500 | $875 Grok 4.3 | $100 GPT-6 Luna |
| 1,000 | $1,750 Grok 4.3 | $200 GPT-6 Luna |
| 5,000 | $8,750 Grok 4.3 | $1,000 GPT-6 Luna |
From each vendor's pricing page: Grok API, OpenAI API.
What makers say
Makers on using it for LLM API, from Product Hunt and Starter Story interviews, each linked to the source. Products with a page of their own and fuller notes first.
On Grok APIGrok pairs real-time knowledge with strong reasoning in a way that makes it genuinely useful for live, in-the-moment automations. We chose it because it doesn't just know a lot, it knows what's happening right now.
Fast models for real-time reasoning Grok adds fast, context-aware reasoning that helps expand the range of workflows our agents can handle.
very helpful for enabling us to make the best router possible!
On OpenAI APIWe use GPT-5.6 to power the Basedash AI data analyst. It's incredibly intelligent and, with the right harness, allows us to rank #1 on BI Bench for solving real-world BI scenarios.
Credit where it’s due: OpenAI’s dev tools made it incredibly easy to prototype and test multiple ideas fast. Still unmatched when you need raw speed, documentation, and flexibility.
Quven writes subtitles from the audio of a film on the machine of the user. The Whisper models, run locally through whisper.cpp, can do it and the audio never leaves that machine.
Loved and watch-outs
Themes that recur in makers' words and Hacker News comments, each linked to what it summarises.
Grok APIOn Product Hunt: 4.7★, 18 reviews · mentioned most: creative problem-solvingOpenAI APIMost loved
- Its models are strong at code generation, reasoning and creative tasks, often chosen after testing alternatives. PHPH 2PH 3PH 4
- The API is reliable and well-priced as the foundation for production features. PHPH 2PH 3HN
- Good docs and a smooth developer experience make integration straightforward. PHPH 2PH 3PH 4
Watch-outs
On Product Hunt: 5.0★, 860 reviews · mentioned most: AI API, AI productivity boost, fast performance · complaints: AI accuracy issues, AI pricingWho uses each
Grok API6 makers' products
Chinilla
IFTTT
n8nChat
Weave Engineering Intelligence
Blacksmith
8base
AI Santa Claus
AI Test Engineer by BlinqIOUsed by both — often one replacing the other, or each for a different part of the product
What makers pair each with
With Grok APIFrontend Framework
Grok API + React:agentfieldarchestradoryever-gauzyscirasourcebotArcReelatlasblumecherry-studiocherry-studio-appconarand 12 more
Firecrawl
GrowthBookAI SDK & Agent Framework
Mastra
TwentyWith OpenAI APIFrontend Framework
OpenAI API + Next.js:
AgentX
AICamp
Airtop
AMA
Antispace
AnythingArtMathCode
Astra Security
Automaticall
Basejump AIbeams
BeforeSunset AIand 203 more
AgentXAICampAirtopAMAAntispaceAnythingArtMathCodeAstra SecurityAutomaticallBasejump AIbeamsBeforeSunset AIand 203 moreOpenAI API + React:
AidaJet
Airial Travel
Casero
giselle
Howdy
Latitude
Layouts.dev
LiftmyCV
Needle
NeuralAgentNotiSprite
omiand 18 more
AidaJetAirial TravelCaserogiselleHowdyLatitudeLayouts.devLiftmyCVNeedleNeuralAgentNotiSpriteomiand 18 more
Daemons by Charlie Labs
Hedy AI
Kick
LayerProof
Normain
StartKit.AI
Tellers.ai
VoquillTransactional Email
OpenAI API + Resend:2dto3D
Agnost AIAntispaceAnything
Basedash
BestInterest for Coparents
Blink.new
Brew
Byterover
Cekura
ClientJam
cogneeand 110 more
Agnost AIAntispaceAnythingBasedashBestInterest for CoparentsBlink.newBrewByteroverCekuraClientJamcogneeand 110 more
Articos
Basalt
BlogBowl
Central
Chat Thing
Decoded
Glitter AI
KommunicateHosting
OpenAI API + Amazon Web Services:
Agentplace.io
AI Context FlowAnythingBlink.new
BooleanMaths Pulse
Brev.ioBrewCekuracognee
ConnectMachine
Cortex
Cynative Security Research Agentand 111 more
Agentplace.ioAI Context FlowAnythingBlink.newBooleanMaths PulseBrev.ioBrewCekuracogneeConnectMachineCortexCynative Security Research Agentand 111 more
Decawork
Eternity AC
FetchSandbox
DGi
IMGPT
Jinna.ai
Korl
munoPayments
OpenAI API + Stripe:
Agree.com
AI Form FillAirtop
AssemblyAutomaticallBasedashBlink.newBrev.ioBrew
Calk AIChargeflow
Chat Dataand 158 more
Agree.comAI Form FillAirtopAssemblyAutomaticallBasedashBlink.newBrev.ioBrewCalk AIChargeflowChat Dataand 158 more
Church Loom
Feedback Wizard AI
InnerWallet
Refgrow
SEOPulser
Side Space
SnappyAI
SocialKit API
Substage
Vibrantsnap
Partnero
ReachLLM
SpreadSimple
UXWizz
Tiptap
AnnounceKitNeither quite right?
See the whole LLM API decision →
Claude
Gemini APIModel providerVery long context and multimodal input, with a free tier to start.vs Grok API →vs OpenAI API →
GroqOpen models, hostedVery low-latency inference on open models, for real-time features.vs Grok API →vs OpenAI API →
Mistral AIModel providerA European provider whose API covers chat, coding, OCR and speech models.vs OpenAI API →
DeepSeekModel providerLow per-token prices on strong reasoning and coding models, with OpenAI- and Anthropic-format endpoints.vs OpenAI API →
OpenRouterGateway (many providers, one API)Trying many models from many providers with one API key and one bill, without opening an account at each.
LiteLLMGateway (many providers, one API)Running your own OpenAI-compatible proxy in front of your own provider keys, with retries, routing and per-key budgets.