Several frontier-class AI models are completely free to use, either through a consumer app or as open-weight models you can run yourself. Llama 4 Scout and Mistral Small 3.1 have no API cost. Gemini 3.1 Flash has a generous free API tier. Claude Haiku and GPT-5.2 mini are the cheapest paid options if you exceed the free limits.
The safest this comparison default, the cheaper option worth trying first, and the specialist pick — before you read the detail below.
Llama 4 Scout is the strongest answer here for this comparison — pick it when quality of output matters more than the $0.50/1M/1M input you pay for it.
Mistral Small 3.1 handles the same job for about 76% less per token. Start here and only move up if the output is not good enough.
Gemini 3.1 Flash is the fastest of these for this comparison — worth it when latency is what the reader notices, not the last few points of reasoning depth.
Llama 4 Scout and Mistral Small 3.1 are fully free to run via open-weight hosting providers.
Gemini 3.1 Flash has the most generous free API tier among closed models — 1M context included.
Claude Haiku and GPT-5.2 mini are the lowest-cost paid options if free tiers run out.
Choose Llama 4 Scout for zero-cost API usage with no rate limits beyond your infrastructure.
Choose Gemini 3.1 Flash when you want a hosted free API from a major provider.
Choose Mistral Small 3.1 for a compact, free-to-run model optimised for fast instruction following.
Switch the scoring lens to see whether the this comparison answer changes when cost, speed, or long-document depth leads the decision.
Google / Budget / Sep 2, 2026
Best cheap AI for broad day-to-day work — now with 1M context.
Ranks models by the broadest mix of coding, writing, research, and long-context usefulness.
You need premium reasoning depth or the highest coding benchmark scores.
Where the this comparison recommendation shifts once you weigh price or latency differently.
Best open-weight long-context option for self-hosted pipelines.
Ultra-cheap multimodal model for massive-volume, low-complexity pipelines.
Best cheap AI for broad day-to-day work — now with 1M context.
Best low-cost writing option for fast-moving content teams.
List prices and published scores — the numbers this page's pick is built from.
| Model | Input | Output | Est. month | Context | Speed | Coding | Writing | Research |
|---|---|---|---|---|---|---|---|---|
| Llama 4 ScoutMeta | $0.50/1M | $1.20/1M | $7.40 | 512k tokens | Fast | 54 | 60 | 78 |
| Mistral Small 3.1Mistral | $0.10/1M | $0.30/1M | $1.60 | 128k tokens | Very fast | 55 | 66 | 52 |
| Gemini 3.1 FlashGoogle | $0.50/1M | $3.00/1M | $11 | 1M tokens | Very fast | 68 | 75 | 76 |
| Claude 4 HaikuAnthropic | $0.80/1M | $4.00/1M | $16 | 200k tokens | Very fast | 52 | 85 | 62 |
Scores out of 100 — how we evaluate models. “Est. month” is 10M in / 2M out at list price: a ceiling, no discounts.
Why each one is on the shortlist for this comparison, what it is genuinely good at, and where we would steer you away from it.
The default answer for this comparison — 88/100 on the long-context axis, and the model we would start with unless the price below rules it out.
Long-window open-weight model that handles large document sets at a low price point.
You want a hosted solution — Gemini 3.1 Flash gives more context for roughly the same cost.
A compelling pick for self-hosted long-context pipelines — but Gemini 3.1 Flash now offers 1M context hosted at a similar price.
Full pricing, benchmark table and release notes on the Llama 4 Scout page.
The cost-conscious pick for this comparison, about 76% less per token than Llama 4 Scout than the top choice while holding 50/100 on long-context.
Mistral's ultra-budget multimodal model — exceptionally cheap with vision support, built for high-volume lightweight tasks where cost is the primary constraint.
You need reliable multi-step reasoning or coding quality — it won't hold up.
The cheapest credible option in the directory. Use it when volume is enormous and task complexity is low.
Full pricing, benchmark table and release notes on the Mistral Small 3.1 page.
Here for latency: it answers fastest of anything listed for this comparison, at 82/100 on long-context.
Best cheap AI for broad day-to-day work — now with 1M context. Full Gemini 3.1 Flash review →
Also worth a look for this comparison, at 58/100 on the long-context axis.
Best low-cost writing option for fast-moving content teams. Full Claude 4 Haiku review →
UseRightAI recommendations are based on practical decision factors people actually feel in day-to-day use.
Newsletter
We email when the this comparison pick changes, when one of these models moves on price, or when something new displaces the current leader.
No spam. Useful updates only. Affiliate disclosures always clearly labeled.
Llama 4 Scout and Mistral Small 3.1 are open-weight models available for free via providers like Groq, Together AI, and Ollama (local). Gemini 3.1 Flash has a free tier in Google AI Studio. Claude.ai and ChatGPT both offer free consumer plans with limited access.
Yes — Claude.ai has a free tier with limited daily messages. For API access, Claude Haiku is the most affordable option at $0.80/1M input tokens, but there is no free API tier.
Llama 4 Maverick (open-weight) performs well on coding for free. Among free-tier hosted options, Gemini 3.1 Flash is the most capable free coding model with fast response times.