# Claude vs DeepSeek: API prices compared, dated and sourced

Canonical page: https://bertrande.com/en/vs/claude-vs-deepseek/
License: CC-BY-4.0, reuse with attribution and a link.

No value below was produced, estimated or completed by a language model. Every figure was read from a source we name, on the date we give.

The cheapest Claude model we track, Claude Haiku 3.5, costs $4.00 per million output tokens and $0.800 per million input tokens. The cheapest DeepSeek model, deepseek-flash, costs $1.20 per million output tokens and $0.300 per million input tokens. At the entry level, DeepSeek is 3.3 times cheaper than Claude on output tokens. Prices read on 11 September 2026 and 18 September 2026.

## Claude models

| Model | Input $/1M | Output $/1M | Read on |
|---|---|---|---|
| Claude Haiku 3.5 | $0.800 | $4.00 | 2026-09-18 |
| Claude Haiku 4.5 | $1.00 | $5.00 | 2026-09-18 |
| Claude Sonnet 5 | $2.00 | $10.00 | 2026-09-18 |
| Claude Sonnet 4 | $3.00 | $15.00 | 2026-09-18 |
| Claude Sonnet 4.5 | $3.00 | $15.00 | 2026-09-18 |
| Claude Sonnet 4.6 | $3.00 | $15.00 | 2026-09-18 |
| Claude Opus 4.5 | $5.00 | $25.00 | 2026-09-18 |
| Claude Opus 4.6 | $5.00 | $25.00 | 2026-09-18 |
| Claude Opus 4.7 | $5.00 | $25.00 | 2026-09-18 |
| Claude Opus 4.8 | $5.00 | $25.00 | 2026-09-18 |
| Claude Opus 5 | $5.00 | $25.00 | 2026-09-18 |
| Claude Fable 5 | $10.00 | $50.00 | 2026-09-18 |
| Claude Fable 5.1 | $10.00 | $50.00 | 2026-09-18 |
| Claude Mythos 5 | $10.00 | $50.00 | 2026-09-18 |
| Claude Mythos 5.1 | $10.00 | $50.00 | 2026-09-18 |
| Claude Opus 4 | $15.00 | $75.00 | 2026-09-18 |
| Claude Opus 4.1 | $15.00 | $75.00 | 2026-09-18 |

## DeepSeek models

| Model | Input $/1M | Output $/1M | Read on |
|---|---|---|---|
| deepseek-flash | $0.300 | $1.20 | 2026-09-11 |
| deepseek-v4-pro | $1.32 | $3.96 | 2026-09-11 |


Method: https://bertrande.com/en/methodology/
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