API cost decision in 10 seconds

DeepSeek V4 Flash (free) vs 🔥Claude Opus 4.7

Pick DeepSeek V4 Flash (free) when budget and context both matter.

Pricing data updated:  Prices normalized to USD per 1M tokens Sample workload: 1M input + 500K output

Budget verdict

Pick DeepSeek V4 Flash (free) when budget and context both matter.

On the standard 1M input plus 500K output workload, DeepSeek V4 Flash (free) is estimated at $0 vs $17.5 for Claude Opus 4.7, saving $17.5 (100% lower).

Cost-first pickDeepSeek V4 Flash (free)
Context-first pickDeepSeek V4 Flash (free)
Sample savings$17.5100%
10x traffic gap$175

DeepSeek V4 Flash (free) is cheaper on the standard workload and also has the larger context window. At 10x that traffic, the same price gap is about $175. Use the calculator below to replace the sample workload with your own token volume.

Cost sensitivity

Workload Sensitivity

Same prices, different token mixes.

DeepSeek V4 Flash (free) stays cheaper across input-heavy, balanced, and output-heavy sample workloads.

Workload shapeToken mixBetter pickDeepSeek V4 Flash (free)Claude Opus 4.7
Input-heavy / RAG 5M input + 500K output DeepSeek V4 Flash (free) $0 $37.5
Balanced workload 1M input + 1M output DeepSeek V4 Flash (free) $0 $30
Output-heavy chatbot 1M input + 5M output DeepSeek V4 Flash (free) $0 $130
Cheaper inputDeepSeek V4 Flash (free)$0 vs $5 / 1M
Cheaper outputDeepSeek V4 Flash (free)$0 vs $25 / 1M
Larger contextDeepSeek V4 Flash (free)1.05M vs 1M
Sample workloadDeepSeek V4 Flash (free)$0 vs $17.5

Estimate your workload cost

Your Workload Cost

Prices are normalized to USD per 1M tokens.
DeepSeek V4 Flash (free)Calculating…Estimated API cost
Claude Opus 4.7Calculating…Estimated API cost
Cheaper for this workloadCalculating…Difference: calculating…

This estimate uses normalized public API pricing per 1M tokens. It is a planning aid, not a billing quote. Verify provider pricing, limits, and terms before production use.

Quick Decision

Verdict

DeepSeek V4 Flash (free) has the lower input price, DeepSeek V4 Flash (free) has the lower output price, and DeepSeek V4 Flash (free) offers the larger context window.

For a 1M input token plus 500K output token workload, the estimated API cost is $0 for DeepSeek V4 Flash (free) and $17.5 for Claude Opus 4.7.

Best Fit

Choose DeepSeek V4 Flash (free) when you care most about lower input-token price, lower output-token price, and larger context window.

Choose Claude Opus 4.7 when its provider, model quality, latency, or availability is more important than the numeric price/context winner.

Head-to-Head Specs
FeatureDeepSeek V4 Flash (free)
(DeepSeek)		🔥Claude Opus 4.7
(Anthropic)
Input Price
prompt tokens per 1M		$0$5
Completion Price
per 1M tokens		$0$25
Sample Workload Cost
1M input + 500K output		$0$17.5
Context Window1.05M1M
Release Date2026-04-242026-04-16
Popularity#3
DeepSeek V4 Flash (free)

DeepSeek V4 Flash is an efficiency-optimized Mixture-of-Experts model from DeepSeek with 284B total parameters and 13B activated parameters, supporting a 1M-token context window. It is designed for fast inference and...

Claude Opus 4.7

Opus 4.7 is the next generation of Anthropic's Opus family, built for long-running, asynchronous agents. Building on the coding and agentic strengths of Opus 4.6, it delivers stronger performance on...

Use-Case Decision Matrix

Use caseBetter pickWhy
Budget-constrained productionDeepSeek V4 Flash (free)On the standard 1M input plus 500K output workload, DeepSeek V4 Flash (free) is estimated at $0 vs $17.5 for Claude Opus 4.7, saving $17.5 (100% lower).
High-volume input processingDeepSeek V4 Flash (free)Lower prompt-token price matters most when prompts or retrieved passages dominate the bill.
Long responses and chatbotsDeepSeek V4 Flash (free)Lower output-token price matters most when assistants generate many completion tokens.
RAG or long-document workDeepSeek V4 Flash (free)A larger context window leaves more room for retrieved passages and source files.