Cheapest frontier model API
Frontier = Artificial Analysis Intelligence Index ≥ 55 (verified 2026-09-05). source. · 10 models
| # | Model | Input /1M | Output /1M | Blended /1M | Released | Verified |
|---|---|---|---|---|---|---|
| 1 | GLM 5.3 Flash (Relace) · Relace | $0.0713 | $0.2375 | $0.309 | 2026-08-26 | 1d ago |
| 2 | Gemini 3.8 Flash (Google) · Google | $0.75 | $3.75 | $4.5 | 2026-09-02 | 2d ago |
| 3 | GLM 5.3 (Reka) · Reka | $1.15 | $3.5 | $4.65 | 2026-08-14 | today |
| 4 | GPT-5.6 Sol (OpenAI) · OpenAI | $1 | $5 | $6 | 2026-07-09 | today |
| 5 | GPT-5.6 Terra (OpenAI) · OpenAI | $1 | $6 | $7 | 2026-07-09 | today |
| 6 | Grok 4.6 (xAI) · xAI | $2 | $6 | $8 | 2026-08-12 | 2d ago |
| 7 | Claude Sonnet 5 (Anthropic) · Anthropic | $2 | $10 | $12 | 2026-06-30 | today |
| 8 | Kimi K3 (DeepInfra) · DeepInfra | $2.85 | $14.25 | $17.1 | 2026-07-16 | today |
| 9 | Claude Opus 5 (Anthropic) · Anthropic | $5 | $25 | $30 | 2026-07-24 | today |
| 10 | Claude Fable 5 (Anthropic) · Anthropic | $10 | $50 | $60 | 2026-06-09 | today |
Blended = input + output price per 1M tokens. One cheapest offer shown per model, models released within the last 12 months. "Verified" = when each price was last checked against its source. Click a column header to sort.