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DeepSeek-V4-Flash vs Kimi K2.5

DeepSeek · released

Wins 6 of 7 areas

Coding · Agents · Reasoning · Math · Long documents · Following instructions

Moonshot · released

Wins 0 of 7 areas

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DeepSeek-V4-Flash is the stronger all-rounder.

Scores updated · 40 tests both models report · How we compare

Where each one wins

Tests won in each of the seven areas where both have results. Each piece is one test, so a longer bar means more evidence; grey means the two scored within a point of each other.

Long documents and following instructions rest on a single test each.

What it costs

Prices per million tokens, roughly 750,000 words. The bars show the cost of a million tokens read plus a million written.

DeepSeek-V4-Flash$0.44 to read · $1.32 to write$1.76Price from Artificial Analysis
Kimi K2.5$0.60 to read · $3.00 to write$3.60Price from Artificial Analysis

DeepSeek-V4-Flash costs 51% less for the same work.

The biggest differences

The tests each model wins by the widest margin, up to three each. Scores are out of 100.

Where DeepSeek-V4-Flash pulls ahead

  • Abstract visual puzzles that people can solveARC-AGI-2+49.6points aheadDeepSeek-V4-Flash61.4Kimi K2.511.8
  • Command-line tasks in a real terminalTerminal-Bench 2.1+33points aheadDeepSeek-V4-Flash78.7Kimi K2.545.7
  • Real work tasks from 44 professionsGDPVal+29.7points aheadDeepSeek-V4-Flash46.9Kimi K2.517.2

Where Kimi K2.5 pulls ahead

  • Avoids making up answers it doesn't knowAA-Omniscience · Non-hallucination+26points aheadKimi K2.534.3DeepSeek-V4-Flash8.3
  • Finds hard-to-locate facts by browsing the webBrowseComp+1.7points aheadKimi K2.574.9DeepSeek-V4-Flash73.2

Every test, side by side

All 40 tests both models report. The winning score is in its model's colour; marks a score checked independently.

CodingDeepSeek-V4-Flash

Full coding ranking

AgentsDeepSeek-V4-Flash

Full agents ranking

ReasoningDeepSeek-V4-Flash

Full reasoning ranking

FactsEven

Full facts ranking

MathDeepSeek-V4-Flash

Full math ranking

Long documentsDeepSeek-V4-Flash
  • AA-LCRDeepSeek-V4-Flash by 1.779.778+1.7

Full long documents ranking

Following instructionsDeepSeek-V4-Flash
  • IFBenchDeepSeek-V4-Flash by 979.270.2+9

Full following instructions ranking

Other results16 tests, not counted

Tests outside the eight areas. They are not counted above: several are summary scores built from other tests, or the same test under another name.

Questions people ask

Which is better, DeepSeek-V4-Flash or Kimi K2.5?

DeepSeek-V4-Flash wins six of the seven areas where both have results: coding, agents, reasoning, math, long documents and following instructions. Kimi K2.5 wins none. They are level on facts.

Which is better for coding?

DeepSeek-V4-Flash. It wins 5 of the 8 coding tests both models report; Kimi K2.5 wins none, and 3 are ties.

Which is cheaper?

DeepSeek-V4-Flash costs $0.44 per million input tokens and $1.32 per million output tokens; Kimi K2.5 costs $0.60 and $3.00. That makes DeepSeek-V4-Flash about 51% cheaper for the same work.

How do you compare the two?

We use the 40 benchmark tests both models have published scores on. The verdict counts the 24 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 16 are listed but not counted, because several are summary scores or repeat a test. Each score is the one shown on the model's own page.

Compare DeepSeek-V4-Flash with

DeepSeek

Across the field

Compare Kimi K2.5 with

Moonshot

Across the field

All comparisons