Token Ledger Digest – 2026-08-18
Top cost impact: OpenAI’s GPT‑5.6 Sol Pro and GPT‑5.6 Sol models cut completion prices by 50% (from $30.00 to $15.00 per 1M tokens) and halved prompt prices ($5.00 → $2.50 per 1M). Their batch variants saw the same proportional drops.
Other notable price changes
| Model | Change | Old → New (per 1M) | Who should care |
|---|---|---|---|
| DeepSeek V4 Flash Latest | ↑ Prompt +18% , ↑ Completion +30% | Prompt: $0.060 → $0.079 ; Completion: $0.121 → $0.157 | Cost‑sensitive users of low‑latency flash models |
| OpenAI GPT‑5.6 Luna Pro / Luna | ↑ Prompt +100% , ↑ Completion +100% | Prompt: $0.10 → $0.20 ; Completion: $0.60 → $1.20 | Teams relying on Luna‑series for high‑throughput tasks |
| OpenAI GPT‑5.6 Terra Pro / Terra | ↑ Prompt +100% , ↑ Completion +100% | Prompt: $1.00 → $2.00 ; Completion: $6.00 → $12.00 | Users of Terra‑class models needing large context |
| Qwen Qwen3.6 27B | ↑ Prompt +115% , ↑ Completion +50% | Prompt: $0.289 → $0.600 ; Completion: $2.40 → $3.60 | Developers using mid‑size Qwen for reasoning |
| Z.ai GLM 5.2 | ↓ Prompt ‑42% , ↓ Completion ‑16% | Prompt: $1.19 → $0.50 ; Completion: $3.74 → $3.15 | Cost‑focused workloads on GLM 5.2 |
| OpenAI GPT Latest | ↓ Prompt ‑50% , ↓ Completion ‑50% | Prompt: $5.00 → $2.50 ; Completion: $30.00 → $15.00 | General‑purpose API consumers |
| Z.ai GLM 4.6 | ↓ Prompt ‑9% , ↓ Completion ‑9% | Prompt: $0.55 → $0.50 ; Completion: $2.20 → $2.00 | Light‑usage scenarios |
| DeepSeek V3.1 Terminus | ↑ Completion +5% | Completion: $0.95 → $1.00 | Users needing slightly higher output budget |
Removed model
- LiquidAI LFM‑2.5‑2.6B (free) – no longer available.
Cheapest models today (per 1M tokens)
- inclusionAI Ling‑2.6‑flash – Prompt $0.01, Completion $0.03
- IBM Granite 4.0 Micro – Prompt $0.017, Completion $0.112
- Mistral Mistral Nemo – Prompt $0.019, Completion $0.03
Total models tracked: 413.
Originally published at The Token Ledger. Subscribe for the daily digest.
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