anthropic claude-sonnet-4-5-20250929
anthropic claude-sonnet-4-5-20250929 costs USD 3.00 per 1M input tokens and USD 15.00 per 1M output tokens (community cross-check, https://github.com/BerriAI/litellm/blob/main/model_prices_and_context_window.json), verified 2026-10-23 22:53 UTC.
Last verified 2026-10-23T22:53:51+00:00 · Source: https://github.com/BerriAI/litellm/blob/main/model_prices_and_context_window.json (community cross-check, waak source litellm)
No first-party source is read for this model yet; this value is a community cross-check and can lag the provider.
Price
- Input
- USD 3.00 / 1M tokens
- Output
- USD 15.00 / 1M tokens
- Cached input
- USD 0.30 / 1M
- Cache write
- USD 3.75 / 1M
- Batch input
- USD 1.50 / 1M
- Batch output
- USD 7.50 / 1M
- This price since
- 2025-10-05T00:25:39+00:00
- FX used
- 1 EUR = 1.1403 USD (ECB)
- Billing
- per_token
Specification
- Context window (tokens)
- 200,000
- Max output
- 64,000
- Mode
- chat
- Region
- global
- Listing
- listing not verifiable
aggregator / community mirror: no first-party public page to check against - First seen
- 2025-10-05T00:25:39+00:00
- SKU id
llm/anthropic/claude-sonnet-4-5-20250929
Other listings of this model
Sources can disagree. The provider's own listing is first-party; LiteLLM, OpenRouter and models.dev are community cross-checks. Differences are shown, not resolved.
| SKU | Source | Input / 1M | Output / 1M | vs this page | Last verified |
|---|---|---|---|---|---|
| llm/modelsdev/302ai/claude-sonnet-4-5-20250929 | modelsdev (community cross-check) | 3.00 | 15.00 | agrees | 2026-10-23T23:39:40+00:00 |
| llm/modelsdev/abacus/claude-sonnet-4-5-20250929 | modelsdev (community cross-check) | 3.00 | 15.00 | agrees | 2026-10-23T23:39:40+00:00 |
| llm/modelsdev/anthropic/claude-sonnet-4-5-20250929 | modelsdev (community cross-check) | 3.00 | 15.00 | agrees | 2026-10-23T23:39:40+00:00 |
| llm/modelsdev/google-vertex-anthropic/claude-sonnet-4-520250929 | modelsdev (community cross-check) | 3.00 | 15.00 | agrees | 2026-10-23T23:39:40+00:00 |
| llm/modelsdev/google-vertex/claude-sonnet-4-520250929 | modelsdev (community cross-check) | 3.00 | 15.00 | agrees | 2026-10-23T23:39:40+00:00 |
| llm/modelsdev/helicone/claude-sonnet-4-5-20250929 | modelsdev (community cross-check) | 3.00 | 15.00 | agrees | 2026-10-23T23:39:40+00:00 |
| llm/modelsdev/jiekou/claude-sonnet-4-5-20250929 | modelsdev (community cross-check) | 3.00 | 15.00 | agrees | 2026-10-23T23:39:40+00:00 |
| llm/modelsdev/llmgateway-providers/anthropic/claude-sonnet-4-5-20250929 | modelsdev (community cross-check) | 3.00 | 15.00 | agrees | 2026-10-23T23:39:40+00:00 |
| llm/modelsdev/llmgateway-providers/aws-bedrock/claude-sonnet-4-5-20250929 | modelsdev (community cross-check) | 3.00 | 15.00 | agrees | 2026-10-23T23:39:40+00:00 |
| llm/modelsdev/llmgateway/claude-sonnet-4-5-20250929 | modelsdev (community cross-check) | 3.00 | 15.00 | agrees | 2026-10-23T23:39:40+00:00 |
| llm/modelsdev/merge-gateway/anthropic/claude-sonnet-4-5-20250929 | modelsdev (community cross-check) | 3.00 | 15.00 | agrees | 2026-10-23T23:39:40+00:00 |
| llm/modelsdev/qihang-ai/claude-sonnet-4-5-20250929 | modelsdev (community cross-check) | 0.43 | 2.14 | differs differs by -85.7% | 2026-10-23T23:39:40+00:00 |
Price history (90 days)
| Observed (UTC) | Price | USD | EUR | Output / 1M | Snapshot |
|---|---|---|---|---|---|
| 2026-09-26T22:40:16+00:00 | USD 3.00 | 3.00 | 2.6309 | 15.00 | #315 |
| 2025-10-05T00:25:39+00:00 | USD 3.00 | 3.00 | 2.5567 | 15.00 | #172 |
Each row is a change point: the price held from that moment until the next row. Full history: JSON · CSV.
Changes
| Seen | Kind | Change |
|---|---|---|
| 2026-10-09T23:19:23+00:00 between 2026-10-08 and 2026-10-09 |
Spec change Context window (tokens) | 1000000.0 → 200000.0 |
| 2026-09-26T22:40:16+00:00 between 2026-09-25 and 2026-09-26 |
Price change batch input, per 1M tokens | – → 1.5 USD |
| 2026-09-16T23:52:08+00:00 between 2026-09-15 and 2026-09-16 |
Spec change Context window (tokens) | 200000.0 → 1000000.0 |
| 2025-10-05T00:25:39+00:00 between 2025-09-28 and 2025-10-05 |
New SKU | 3 USD |
API: /v1/skus/llm/anthropic/claude-sonnet-4-5-20250929
Cite this
Free to reuse under CC BY 4.0 with this credit. The numbers are list prices, not transacted prices.
InfraRabbit (2026). anthropic claude-sonnet-4-5-20250929 [data as of 2026-10-23]. https://infrarabbit.com/llm/anthropic/claude-sonnet-4-5-20250929 (accessed 2026-10-24). List prices, not transacted prices. CC BY 4.0.
BibTeX
@misc{infrarabbit_llm_anthropic_claude_sonnet_4_5_20250929_2026,
author = {{InfraRabbit}},
title = {anthropic claude-sonnet-4-5-20250929},
year = {2026},
howpublished = {\url{https://infrarabbit.com/llm/anthropic/claude-sonnet-4-5-20250929}},
note = {Data as of 2026-10-23; accessed 2026-10-24; list prices, not transacted prices; CC BY 4.0}
}