Best Free LLM API Tiers
These models offer a free rate-limited API tier — no credit card required to start. Ranked by quality score. All free API tiers have rate limits; none are suitable for production traffic without a paid plan. Useful for prototyping, evaluation, and low-volume personal projects.
1
Gemini 3 ProGoogle
Google AI StudioFree tier + $2/$12 per 1M paidFree tier for developers: rate-limited (60 req/min). Not a consumer product — for API testing and development only. Paid: $2/$12 per 1M tokens. Prompts >200K tokens billed at 2×.
8.8
quality
2
Llama 4 ScoutMeta
GroqFree tier + $0.11/$0.11 per 1M paidFastest hosted inference (~180 t/s). Free tier available — rate-limited by requests/min and daily tokens. Not suitable for production workloads on free tier.
Together AIFree tier + $0.18/$0.18 per 1M paid$25 free credits on signup.
7.5
quality
3
Gemini 3 FlashGoogle
Google AI StudioFree tier + $0.5/$3 per 1M paidFree tier: rate-limited (60 req/min). Paid: $0.50/$3.00 per 1M tokens. Prompts >200K tokens billed at 2×. All four modalities (text/image/audio/video) included.
7.3
quality
4
DeepSeek V3.2DeepSeek
Together AIFree tier + $0.3/$1.2 per 1M paid$25 free credits on signup.
6.3
quality
5
Llama 4 MaverickMeta
Together AIFree tier + $0.27/$0.85 per 1M paid$25 free credits on signup. Fast inference at 124+ t/s.
GroqFree tier + $0.31/$0.85 per 1M paidVery fast inference. Free tier available with rate limits.
4.4
quality
No free API tier
These models require a paid API plan from day one.
GPT-5.2OpenAI
from $1.75/1M input8.3
Claude Sonnet 4.6Anthropic
from $3/1M input8.0
Grok 4.1xAI
from $3/1M input8.0
Claude Opus 4.6Anthropic
from $5/1M input7.5
GPT-5 miniOpenAI
from $0.25/1M input7.3
Mistral Large 3Mistral
from $0.5/1M input4.6