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Best APIs for Hackathons
APIs with the easiest setup, highest free limits, and best documentation — picked for shipping speed. All no credit card required.
10
APIs
10
No card
92/100
Avg score
10 providers in this collection
Browse all APIs →Groq
LLM
96
/ 100
Trust score breakdown
Reliability35%
Free Tier30%
Documentation20%
Popularity15%
composite96/100
Fastest LLM inference in the world. The free tier is real.
14,400 req/day · 30 req/min · no card✓ no card
OpenAI-compatibleStreamingFunction calling
OpenRouter
LLM
94
/ 100
Trust score breakdown
Reliability35%
Free Tier30%
Documentation20%
Popularity15%
composite94/100
One API, 100+ models. Pay-as-you-go with no markup.
50 req/min · 20 req/day free models · no card✓ no card
Multi-modelStreamingVision
DeepSeek
LLM
93
/ 100
Trust score breakdown
Reliability35%
Free Tier30%
Documentation20%
Popularity15%
composite93/100
Open-weights frontier model. Industry-low pricing.
5M tokens free · then $0.14/M input · no card✓ no card
Open weightsReasoningCheap
Fal
Image
92
/ 100
Trust score breakdown
Reliability35%
Free Tier30%
Documentation20%
Popularity15%
composite92/100
Fastest image and video inference. Generous free credits.
$1 free credits · 100 req/day · no card✓ no card
FLUXStable DiffusionReal-time
Together
LLM
91
/ 100
Trust score breakdown
Reliability35%
Free Tier30%
Documentation20%
Popularity15%
composite91/100
Open-source models at scale. $5 free credits.
$5 credits · no card✓ no card
Open weightsFine-tuningEmbeddings
Deepgram
Speech
90
/ 100
Trust score breakdown
Reliability35%
Free Tier30%
Documentation20%
Popularity15%
composite90/100
Best-in-class speech-to-text. $200 free credits.
$200 credits · no card✓ no card
Real-timeLow latencyMany languages
HuggingFace Inference
LLM
89
/ 100
Trust score breakdown
Reliability35%
Free Tier30%
Documentation20%
Popularity15%
composite89/100
Run 100,000+ open models. $0.10/month serverless free.
$0.10/month serverless · no card✓ no card
Open sourceHuge catalogEmbeddings
ElevenLabs
Speech
88
/ 100
Trust score breakdown
Reliability35%
Free Tier30%
Documentation20%
Popularity15%
composite88/100
Most realistic AI voices. 10k characters/month free.
10k characters/month · no card✓ no card
TTSVoice cloningMultilingual
Jina AI
Embeddings
91
/ 100
Trust score breakdown
Reliability35%
Free Tier30%
Documentation20%
Popularity15%
composite91/100
Best-in-class embeddings + Reader API. 1M tokens free.
1M tokens · 1k req/min · no card✓ no card
EmbeddingsRerankerReader
Google Gemini
LLM
95
/ 100
Trust score breakdown
Reliability35%
Free Tier30%
Documentation20%
Popularity15%
composite95/100
Gemini Flash free forever. 1M context. 1500 req/day.
1,500 req/day · 1M context · no card✓ no card
Vision1M contextMultimodal