| # Token & API Costs |
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| All costs from `data/cost_log.jsonl`. Each row is one "Generate Brief" run from the Streamlit UI. |
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| --- |
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| ## Haiku 4.5 runs (current model: `claude-haiku-4-5-20251001`) |
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| | Date (UTC) | Ticker | Input tokens | Output tokens | Cost (USD) | |
| |---|---|---|---|---| |
| | 2026-05-05 16:16 | AAPL | 23,200 | 3,022 | $0.0306 | |
| | 2026-05-05 16:19 | AAPL | 33,949 | 3,673 | $0.0419 | |
| | 2026-05-05 16:48 | AAPL | 33,948 | 3,875 | $0.0427 | |
| | 2026-05-05 17:12 | AAPL | 34,684 | 3,990 | $0.0437 | |
| | 2026-05-05 17:19 | AAPL | 38,185 | 4,920 | $0.0502 | |
| | 2026-05-05 17:39 | AAPL | 34,684 | 4,353 | $0.0452 | |
| | 2026-05-05 19:37 | AAPL | 34,212 | 4,071 | $0.0437 | |
| | 2026-05-05 19:39 | AAPL | 34,212 | 3,948 | $0.0432 | |
| | 2026-05-05 20:22 | AAPL | 34,212 | 3,937 | $0.0431 | |
| | 2026-05-05 20:39 | AAPL | 34,212 | 3,903 | $0.0430 | |
| | 2026-05-05 21:44 | AAPL | 37,207 | 4,463 | $0.0476 | |
| | 2026-05-05 21:54 | AAPL | 34,212 | 4,081 | $0.0437 | |
| | 2026-05-06 08:29 | AAPL | 26,620 | 3,388 | $0.0348 | |
| | 2026-05-06 08:32 | AAPL | 31,084 | 3,999 | $0.0409 | |
| | 2026-05-06 08:39 | AAPL | 31,084 | 4,297 | $0.0421 | |
| | 2026-05-06 15:01 | AAPL | 39,303 | 4,324 | $0.0487 | |
| | 2026-05-06 15:50 | AAPL | 39,303 | 4,378 | $0.0490 | |
| | 2026-05-06 17:24 | NVDA | 35,991 | 4,919 | $0.0485 | |
| | 2026-05-06 22:18 | NVDA | 38,891 | 4,522 | $0.0492 | |
| | 2026-05-06 22:52 | NVDA | 62,802 | 4,419 | $0.0679 | |
| | **Total** | | **711,995** | **82,482** | **$0.8995** | |
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| **Average per brief (haiku-4-5): $0.045** |
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| --- |
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| ## Earlier dev runs (`claude-sonnet-4-6`, now replaced by haiku-4-5) |
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| | Date (UTC) | Ticker | Input tokens | Output tokens | Cost (USD) | |
| |---|---|---|---|---| |
| | 2026-05-05 12:20 | AAPL | 29,531 | 2,209 | $0.1217 | |
| | 2026-05-05 12:25 | AAPL | 22,812 | 2,529 | $0.1064 | |
| | 2026-05-05 12:36 | AAPL | 27,459 | 2,397 | $0.1183 | |
| | 2026-05-05 12:40 | AAPL | 22,754 | 2,602 | $0.1073 | |
| | 2026-05-05 12:43 | AAPL | 29,535 | 2,646 | $0.1283 | |
| | 2026-05-05 15:29 | AAPL | 66,933 | 3,709 | $0.2564 | |
| | 2026-05-05 15:48 | AAPL | 45,406 | 3,747 | $0.1924 | |
| | 2026-05-05 15:58 | AAPL | 58,849 | 3,683 | $0.2318 | |
| | 2026-05-05 16:05 | AAPL | 50,982 | 3,738 | $0.2090 | |
| | **Total** | | **354,261** | **27,260** | **$1.4717** | |
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| **Average per brief (sonnet-4-6): $0.164** |
| The switch to haiku-4-5 reduced cost per brief by ~73%. |
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| --- |
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| ## Summary |
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| | | Haiku 4.5 (current) | Sonnet 4.6 (dev) | |
| |---|---|---| |
| | Runs | 20 | 9 | |
| | Avg cost / brief | $0.045 | $0.164 | |
| | Total spend | $0.90 | $1.47 | |
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| **Grand total across all runs: $2.37** |
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| --- |
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| ## Cost components per brief |
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| - **LLM:** 1 agent loop (typically 4–7 tool rounds) + 1 synthesis call. All billed through Anthropic API. |
| - **Tavily** (`search_news`): free tier — no cost within standard limits. |
| - **SEC EDGAR**: public API — no cost. |
| - **yfinance**: public library — no cost. |
| - **Reranker** (BAAI/bge-reranker-base): runs locally — no API cost. |
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| **Worst-case bound:** `MAX_TOOL_ROUNDS = 10` in `agent/graph.py` caps the agent loop, bounding the maximum spend per brief at ~$0.08 on haiku-4-5. |
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| --- |
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| *Log source: `data/cost_log.jsonl` — appended automatically on each Streamlit run via `agent/cost_log.py`.* |
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