A newer version of the Streamlit SDK is available: 1.61.1
Token & API Costs
All costs from data/cost_log.jsonl. Each row is one "Generate Brief" run from the Streamlit UI.
Haiku 4.5 runs (current model: claude-haiku-4-5-20251001)
| 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 |
Average per brief (haiku-4-5): $0.045
Earlier dev runs (claude-sonnet-4-6, now replaced by haiku-4-5)
| 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 |
Average per brief (sonnet-4-6): $0.164
The switch to haiku-4-5 reduced cost per brief by ~73%.
Summary
| Haiku 4.5 (current) | Sonnet 4.6 (dev) | |
|---|---|---|
| Runs | 20 | 9 |
| Avg cost / brief | $0.045 | $0.164 |
| Total spend | $0.90 | $1.47 |
Grand total across all runs: $2.37
Cost components per brief
- 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.
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.
Log source: data/cost_log.jsonl — appended automatically on each Streamlit run via agent/cost_log.py.