AI agents · OpenClaw · self-hosting · automation

Quick Answer

Claude Opus 5 vs DeepSeek V4 Pro (July 2026)

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The Short Answer

Claude Opus 5 is the better model; DeepSeek V4 Pro is the better deal. Opus 5 (launched July 24, 2026, $5/$25 per MTok) leads SWE-bench Pro and Frontier-Bench with best-in-class agentic coding. DeepSeek V4 Pro (open weights, MIT, $0.435/$0.87 off-peak) scores ~80% SWE-bench Verified at roughly a 16x lower cost per task — and you can self-host it.

Head-to-Head

Claude Opus 5DeepSeek V4 Pro
Typeclosed (API only)open weight (MIT)
API in/out ($/MTok)$5 / $25$0.435 / $0.87 (off-peak)*
30K/5K task cost~$0.28~$0.017
SWE-bench Pro79.2%~55%
SWE-bench Verified~97%~80%
Context1M1M
Self-host❌✅
Effort toggle✅ low→max❌

*2x during peak UTC windows (~01–04 & 06–10 UTC).

When to Pick Opus 5

  • Hardest long-horizon coding, multi-repo refactors, and agentic tool-use where reliability and self-correction matter.
  • Tasks that benefit from the effort toggle (low/medium/high/xhigh/max) to trade cost against quality per call.
  • Enterprise workloads that want Anthropic’s alignment posture and managed availability across Bedrock and the Claude apps.

When to Pick DeepSeek V4 Pro

  • Cost-dominated workloads — its output pricing is roughly a 29th of Opus 5’s.
  • Data-control or on-prem requirements: MIT weights mean you can run it inside your own boundary.
  • Value coding at scale, where ~80% SWE-bench Verified is “good enough” and the savings fund far more requests.

The Honest Tradeoff

This is the defining 2026 pattern: closed frontier models win the top of the benchmark charts, but open-weight models like DeepSeek V4 have closed the gap enough that cost and control now decide most real deployments. Many teams run DeepSeek V4 Pro as the default and reserve Opus 5 for the requests that actually need frontier reasoning.

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