GPT 6.1 brought another nerf to usage - table update
Last time I measured GPT 6's usage. https://www.reddit.com/r/codex/comments/1wp0v6x/allowance_for_gpt_6_luna_sol_and_astra_measured/
Now it's time for an update with the new 6.1 Sol. Measured on a Plus account again using a fresh 5h window, so it's very accurate. More details in the previous post. The numbers are based on current API costs. Measured twice. Once it amounted to 7.8, so I'll use the bigger number.
The numbers for anything other than 6.1 Sol were measured before today. There is a chance they were nerfed too. I will try to measure that again at a later date.
| Name | Per 5 hours | Per week | Per month (30 days) | API cost÷Sub price ($20) ratio |
|---|---|---|---|---|
| GPT-5.6 Sol | $14.4 | $86.4 | $370 | 18.5 |
| GPT 6 Luna | $6.5 | $39 | $167 | 8.35 |
| GPT-6 Sol | $11 | $66 | $283 | 14.15 |
| GPT-6.1 Sol | $7.8 | $46.8 | $200 | 10 |
| GPT-6 Astra (before 6.1 Sol release) | $11 | $66 | $283 | 14.15 |
| GPT-6 Astra | $10 | $60 | $257 | 12.85 |
For Pro, simply multiply by 5/10/25. Summarizing, taking API pricing into account, we should be getting around the same 6.1 usage as 6 and more than 5.6 (see the table below), but half the value in dollars compared to 5.6.
As a bonus, here is a table of the "real cost" per million tokens and total amount of tokens per real dollar spent, also compared to DeepSeek v4.1 Flash (off-peak pricing), GLM 5.3 (off-peak), and Muse Spark. If you use OpenCode, Ollama Cloud, or CommandCode subscriptions, the price for DeepSeek goes down. At peak hours, the price for DeepSeek and GLM is 2x. Ollama has its own infrastructure with ZDR and uses different peak hours. In my own real work tests, DeepSeek is around 5.6 Sol Medium/High level in code quality but significantly worse at following the system prompt or skills guidance.
For z.ai plans, you can subscribe quarterly or yearly for better ratings.
| Model | Input | Cached Input | Output | Tokens per $1 |
|---|---|---|---|---|
| GPT-5.6 Sol ÷ 18.5 | $0.216216 | $0.021622 | $1.081081 | 31.46M |
| GPT-6 Luna ÷ 8.35 | $0.011976 | $0.001198 | $0.059880 | 567.90M |
| GPT-6 Sol ÷ 14.15 | $0.141343 | $0.014134 | $0.706714 | 48.13M |
| GPT-6.1 Sol ÷ 10 | $0.200000 | $0.010000 | $1.000000 | 50.76M |
| GPT-6 Astra ÷ 12.85 | $0.778210 | $0.077821 | $3.891051 | 8.74M |
| Claude Opus 5.5 ÷ 42* | $0.095238 | $0.004762 | $0.476190 | 106.60M |
| DeepSeek V4.1 Flash (API) | $0.150000 | $0.003000 | $0.600000 | 103.52M |
| DeepSeek V4.1 Flash (Ollama) ÷ 3 | $0.050000 | $0.001000 | $0.200000 | 310.56M |
| DeepSeek V4.1 Flash (OpenCode/CommandCode) ÷ 6 | $0.025000 | $0.000500 | $0.100000 | 621.12M |
| Muse Spark 1.3 Contributor (OpenCode) ÷ 6 | $0.016667 | $0.000333 | $0.033333 | 1,103.33M |
| GLM-5.3 (Ollama/OpenCode $40 Plan) ÷ 3 | $0.466667 | $0.086667 | $1.466667 | 9.70M |
| GLM-5.3 (Z.ai Lite) ÷ 7.668 | $0.182577 | $0.033907 | $0.573813 | 24.80M |
| GLM-5.3 (Z.ai Pro) ÷ 10.352 | $0.135240 | $0.025116 | $0.425039 | 33.48M |
| GLM-5.3 (Z.ai Max) ÷ 11.502 | $0.121718 | $0.022605 | $0.382542 | 37.20M |
| GLM-5.3 Flash (Z.ai Lite) ÷ 2.657 | $0.056455 | $0.011291 | $0.188182 | 75.16M |
| GLM-5.3 Flash (Z.ai Pro) ÷ 3.586 | $0.041829 | $0.008366 | $0.139431 | 101.44M |
| GLM-5.3 Flash (Z.ai Max) ÷ 3.985 | $0.037641 | $0.007528 | $0.125471 | 112.73M |
| GLM-5.3 Flash (OpenCode/CommandCode) ÷ 6 | $0.025000 | $0.005000 | $0.083333 | 169.73M |
Tokens per $1 assumes 97% cached input, 2.5% uncached input, and 0.5% output.
* - Claude charges for cache writes. The pricing is averaged
Changelog:
2026-09-29 - Added 6.1 Sol.
2026-09-30 - Astra is down from 10. I didn't check 6 Sol and Luna yet. Added tokens per dollar. Added z.ai GLM plans
2026-10-01 - CommandCode increased GLM 5.3 Flash usage to $60, matching OpenCode.
2026-10-05 - Added Claude Opus 5.5. I used these numbers. Their findings for Codex match mine, so I trust them.