THE TICKER · HEAD-TO-HEAD · CHECKED DAILY · LAST CHANGE 2026-10-13
CLAUDE OPUS 5.5 VS DEEPSEEK V4.1 FLASH
Anthropic vs DeepSeek, in USD per million tokens, cross-checked daily against the public pricing dataset. Same jobs, both meters running.
Claude Opus 5.5 costs 32.8x more than DeepSeek V4.1 Flash for the same job — a 1,000-token prompt with a 3,000-token reply runs $0.06 vs $0.0019. At 1,000 runs a day, that gap is $1,861.50 a month for identical traffic.
SIDE BY SIDE
| Claude Opus 5.5 → | DeepSeek V4.1 Flash → | |
|---|---|---|
| Vendor | Anthropic | DeepSeek |
| Input / MTok | $4.00 | $0.150 |
| Output / MTok | $20.00 | $0.600 |
| Output multiple | 5.0x | 4.0x |
| 1K prompt + 3K reply | $0.06 | $0.0019 |
SAME JOB, BOTH BILLS
| Scenario | Claude Opus 5.5 | DeepSeek V4.1 Flash | Gap |
|---|---|---|---|
| A typical prompt | $0.02 | $0.0006 | 32.8x |
| A 20-turn conversation | $0.10 | $0.0030 | 32.0x |
| Summarizing a 10-page document | $0.10 | $0.0031 | 30.8x |
| One agent run | $0.25 | $0.0075 | 33.1x |
| A code review request | $0.08 | $0.0025 | 32.7x |
Output sizes use the same editorial ratios as the Burn Calculator. Estimates, not invoices — and price is not a benchmark: the cheaper model is only a bargain if it does the job.
SETTLE IT WITH YOUR OWN PROMPT
Paste a real prompt into the Burn Calculator and see what it costs on Claude Opus 5.5, DeepSeek V4.1 Flash and the other 34 models on the board — plus how much of it is waste either way.