Question 1

Which AI model API is the cheapest?

Accepted Answer

Qwen3.7 Flash at $0.03 input / $0.13 output per 1M tokens, followed by Granite 4.0 Micro ($0.02 in) and Nova Micro ($0.03 in / $0.14 out). Rates are Sep 2026 list prices — always verify provider pages.

Question 2

GPT-5 vs Claude Sonnet 5 — which is better for coding?

Accepted Answer

Both lead coding benchmarks. GPT-5-Codex costs $1.25/$10 per 1M tokens while Claude Sonnet 5 costs $2/$10; Claude leads on agentic multi-step tasks, GPT-5 is cheaper per output token.

Question 3

Which AI model has the biggest context window?

Accepted Answer

Llama 4 Scout with 10M tokens, then Gemini 1.5 Pro and Grok 4.1 with 2M, then the 1M group: Gemini 2.5/3.x, Claude Sonnet 4.5/4.6/5 and GPT-4.1.

Question 4

How much does the GPT-5 API cost?

Accepted Answer

GPT-5 costs $1.25 per 1M input and $10 per 1M output tokens. GPT-5 mini is $0.25/$2, nano $0.05/$0.40. The newer GPT-6 Sol is $2/$10 and flagship GPT-6 Astra $10/$50.

Question 5

What is the smartest AI model in 2026?

Accepted Answer

Claude Fable 5.1, GPT-6 Astra and GPT-5 top public benchmarks (MMLU-Pro, SWE-bench, LMArena) as of Sep 2026. Scores here are indicative — test on your own task before choosing.

Question 6

Is DeepSeek really cheaper than GPT?

Accepted Answer

Yes. DeepSeek V3 ($0.27/$1.10 per 1M) is roughly 5–9x cheaper than GPT-5, and the newer DeepSeek V4 flagship is $0.43/$0.87 — both with open weights.

Question 7

Is this AI model comparison free?

Accepted Answer

Yes, completely free with no sign-up. Compare all 78 models on any device, unlimited times.