Neither wins outright: Anthropic: Claude Sonnet 4.5 (batch) is the pick when you need image input, DeepSeek: DeepSeek V4 Pro 0813 (batch) when cost matters at scale.
| Spec | Anthropic: Claude Sonnet 4.5 (batch) | DeepSeek: DeepSeek V4 Pro 0813 (batch) |
|---|---|---|
| Provider | Anthropic | DeepSeek |
| Input price (per 1M tokens) | $1.50 | $0.66 |
| Output price (per 1M tokens) | $7.50 | $1.98 |
| Blended price (3:1 input/output) | $3.00 | $0.99 |
| Cheaper than … of all models we track | 21% | 39% |
| Context window | 1M tokens (~1,500 pages) | 1.0M tokens (~1,573 pages) |
| Larger context than … of all models | 69% | 81% |
| Max output per response | 64K tokens (~48,000 words) | 944K tokens (~707,800 words) |
| Input types | text, image, file | text |
| Output types | text | text |
| Free variant | No | No |
| Listed since | 2025-09-29 | 2026-08-12 |
Monthly cost at list price for five common workloads. Token counts per unit are stated so you can scale them to your own traffic. A workload that does not fit a model's context window is marked rather than priced.
| Workload (per month) | Anthropic: Claude Sonnet 4.5 (batch) | DeepSeek: DeepSeek V4 Pro 0813 (batch) | Difference |
|---|---|---|---|
| Customer-support chatbot 50,000 conversations — each a 6-turn conversation (1,500 in / 400 out tokens) | $263 | $89.10 | DeepSeek: DeepSeek V4 Pro 0813 (batch) saves $173 |
| RAG search over documents 20,000 questions — each a question answered from ~8 retrieved passages (6,000 in / 500 out tokens) | $255 | $99.00 | DeepSeek: DeepSeek V4 Pro 0813 (batch) saves $156 |
| Coding / tool-using agent 2,000 tasks — each a multi-step task with tool calls and file context (60,000 in / 6,000 out tokens) | $270 | $103 | DeepSeek: DeepSeek V4 Pro 0813 (batch) saves $167 |
| Batch summarisation 10,000 documents — each a 6,000-word report summarised to a page (8,000 in / 600 out tokens) | $165 | $64.68 | DeepSeek: DeepSeek V4 Pro 0813 (batch) saves $100 |
| Long-document analysis 500 documents — each a 150-page contract or codebase read in one pass (100,000 in / 2,000 out tokens) | $82.50 | $34.98 | DeepSeek: DeepSeek V4 Pro 0813 (batch) saves $47.52 |
| Capability | Anthropic: Claude Sonnet 4.5 (batch) | DeepSeek: DeepSeek V4 Pro 0813 (batch) | What it lets you do |
|---|---|---|---|
| Tool / function calling | ✓ Yes | ✓ Yes | call your APIs and run agent loops |
| Structured output (JSON schema) | ✓ Yes | ✓ Yes | return JSON that validates against your schema |
| Reasoning / thinking mode | ✓ Yes | ✓ Yes | spend extra tokens thinking before answering hard problems |
| Image input | ✓ Yes | — | read screenshots, charts and scanned pages |
| Audio input | — | — | take speech or audio directly |
| File / PDF input | ✓ Yes | — | accept documents without your own parsing step |
| Image output | — | — | generate images, not just text |
| Built-in web search | ✓ Yes | — | answer from live web results |
| Seed (reproducible sampling) | — | — | repeat a generation for tests and evals |
| Log-probabilities | — | ✓ Yes | read token confidence for classification and scoring |
From each model's published parameters and input/output types. “—” means not advertised, not proven absent.
| Date | Model | Input / 1M | Output / 1M |
|---|---|---|---|
| 2026-09-09 | DeepSeek: DeepSeek V4 Pro 0813 (batch) | $0.66 | $1.98 |
Neither wins outright: Anthropic: Claude Sonnet 4.5 (batch) is the pick when you need image input, DeepSeek: DeepSeek V4 Pro 0813 (batch) when cost matters at scale. In short: Anthropic: Claude Sonnet 4.5 (batch) when you need image input, you need file / PDF input, you need built-in web search; DeepSeek: DeepSeek V4 Pro 0813 (batch) when cost matters at scale, you need log-probabilities, you generate long outputs in one go, you want the newer model.
DeepSeek: DeepSeek V4 Pro 0813 (batch) is cheaper: $0.99 vs $3.00 per 1M tokens at a typical 3:1 input/output mix, 67% less. For 50,000 support conversations a month that is $89.10 against $263.
Anthropic: Claude Sonnet 4.5 (batch) costs $1.50 per 1M input tokens and $7.50 per 1M output tokens; DeepSeek: DeepSeek V4 Pro 0813 (batch) costs $0.66 input and $1.98 output. Output tokens are billed separately, so long answers shift the gap.
DeepSeek: DeepSeek V4 Pro 0813 (batch): 1.0M tokens, about 1,573 pages, against 1M (about 1,500 pages) for Anthropic: Claude Sonnet 4.5 (batch).
Tool calling — Anthropic: Claude Sonnet 4.5 (batch): yes, DeepSeek: DeepSeek V4 Pro 0813 (batch): yes. JSON-schema structured output — Anthropic: Claude Sonnet 4.5 (batch): yes, DeepSeek: DeepSeek V4 Pro 0813 (batch): yes.
Only Anthropic: Claude Sonnet 4.5 (batch) accepts image input; DeepSeek: DeepSeek V4 Pro 0813 (batch) is text-only for input.
No free variant is listed for either; both are pay-per-token.
Anthropic: Claude Sonnet 4.5 (batch) can write up to 64K tokens (about 48,000 words) per response; DeepSeek: DeepSeek V4 Pro 0813 (batch) up to 944K (about 707,800 words).
Anthropic: Claude Sonnet 4.5 (batch) was listed on 2025-09-29; DeepSeek: DeepSeek V4 Pro 0813 (batch) on 2026-08-12.
Anthropic: Claude Sonnet 4.5 (batch): price unchanged since we started tracking it on 2026-08-07. DeepSeek: DeepSeek V4 Pro 0813 (batch): input price cut 50% ($1.32 → $0.66/1M), output price cut 50% ($3.96 → $1.98/1M) on 2026-09-09.
Claude Sonnet 4.5 is Anthropic’s most advanced Sonnet model to date, optimized for real-world agents and coding workflows. It delivers state-of-the-art performance on coding benchmarks such as SWE-bench Verified, with...
Full Anthropic: Claude Sonnet 4.5 (batch) specs →DeepSeek V4 Pro 0813 is a large-scale mixture-of-experts model from DeepSeek. This is the GA release of DeepSeek V4 Pro.
Full DeepSeek: DeepSeek V4 Pro 0813 (batch) specs →