Codex CLI
Observed throughTokscale Coding Client Report
Codex CLI is OpenAI's open-source coding agent for local terminal-based development.
Reality Snapshot
Observed tokens
5.8T+108.7%
over 30 days
Estimated tracked spend
$4M
Invoices may differ
Active developers
639-153
deduplicated over 30 days
Observed messages
42.7M
over 30 days
Most-used model
GPT-5.6 Sol79.7%
of observed tokens
Observed Usage
Observed tokensDaily active developers
Models used
Observed 30-day client usage by model
| Model | Tokens | Share | Change |
|---|---|---|---|
| GPT-5.6 SolOpenAI | 4.6T | 80% | 0% |
| GPT-5.6 TerraOpenAI | 419.7B | 7.2% | 0% |
| GPT-5.5OpenAI | 313.3B | 5.4% | 0% |
| GPT-5.6 LunaOpenAI | 224.7B | 3.9% | 0% |
| UnknownObserved model | 126.9B | 2.2% | 0% |
| Codex Auto ReviewOpenAI | 53.3B | <1% | 0% |
| GPT-5.4OpenAI | 10.9B | <1% | 0% |
| GPT-5.3 Codex SparkOpenAI | 8.8B | <1% | 0% |
Token composition
Share of observed client tokens
Cache read5.6T96%
Input227.1B3.9%
Output17.1B<1%
Reasoning6.2B<1%
Client Economics
GPT-5.6 Sol$3.6M89%
GPT-5.6 Terra$179K4.5%
GPT-5.5$229K5.7%
GPT-5.6 Luna$12.2K<1%
Unknown$0.000%
Codex Auto Review$2.2K<1%
GPT-5.4$5.6K<1%
GPT-5.3 Codex Spark$3.1K<1%
Estimated spend per 1M tracked tokens$0.69
Cache-read share96.1%
Spend basisEstimated from tracked model usage
Estimated tracked spend uses Tokscale model and provider pricing data. Actual invoices may differ.
Client Momentum
+108.7%30-day growthObserved coding client
Compared with the prior non-overlapping 30-day window
Provider footprint
- OpenAI5.7T
- Observed model126.9B
Client details
Canonical clientcodex
TelemetryAggregated Tokscale submissions
Current window2026-07-12 to 2026-08-10
Comparison window2026-06-12 to 2026-07-11
SpendEstimated; invoices may differ
About this client
Codex CLI is OpenAI's open-source coding agent for local terminal-based development.
Links & sources
TOKSCALE INSIGHT
Codex CLI recorded 5.8T coding tokens across 639 developers during the latest 30-day Tokscale window.
Evidence confidenceStable observed sample