Skip to content
VECTOR WIREAI INTELLIGENCE
⌘K
UTC
Models739Deals30d267Policy30d64, 15 pendingSources1,010

GPT-5.6 Sol vs Claude Opus 5

OpenAI · released

Wins 3 of 8 areas

Math · Long documents · Following instructions

Anthropic · released

Wins 5 of 8 areas

Coding · Agents · Reasoning · Facts · Images and charts

Claude Opus 5 is the stronger all-rounder.GPT-5.6 Sol is cheaper and better at math.

Both rank among the ten best models we track in reasoning, coding, agents and math.

Scores updated · 60 tests both models report · How we compare

Where each one wins

Tests won in each of the eight areas we test. 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.

GPT-5.6 Sol$4.00 to read · $20.00 to write$24Price from Artificial Analysis
Claude Opus 5$5.00 to read · $25.00 to write$30Price from Anthropic's own price page

GPT-5.6 Sol costs 20% less for the same work.

The biggest differences

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

Where Claude Opus 5 pulls ahead

  • Avoids making up answers it doesn't knowAA-Omniscience · Non-hallucination+31.4points aheadClaude Opus 539.2GPT-5.6 Sol7.8
  • Solves new puzzle games it has never seenARC-AGI-3+22.4points aheadClaude Opus 530.2GPT-5.6 Sol7.8
  • Common-sense trick questionsSimpleBench+15.8points aheadClaude Opus 580.6GPT-5.6 Sol64.8

Where GPT-5.6 Sol pulls ahead

Every test, side by side

All 60 tests both models report. The winning score is in its model's colour; marks a score checked independently.

CodingClaude Opus 5

Full coding ranking

AgentsClaude Opus 5

Full agents ranking

ReasoningClaude Opus 5

Full reasoning ranking

FactsClaude Opus 5

Full facts ranking

Images and chartsClaude Opus 5

Full images and charts ranking

MathGPT-5.6 Sol

Full math ranking

Long documentsGPT-5.6 Sol
  • AA-LCRGPT-5.6 Sol by 4.78479.3+4.7

Full long documents ranking

Following instructionsGPT-5.6 Sol

Full following instructions ranking

Other results30 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, GPT-5.6 Sol or Claude Opus 5?

Claude Opus 5 wins five of the eight areas we test: coding, agents, reasoning, facts and images and charts. GPT-5.6 Sol wins math, long documents and following instructions, and costs 20% less.

Which is better for coding?

Claude Opus 5. It wins 4 of the 6 coding tests both models report; GPT-5.6 Sol wins 1, and 1 is a tie.

Which is cheaper?

GPT-5.6 Sol costs $4.00 per million input tokens and $20.00 per million output tokens; Claude Opus 5 costs $5.00 and $25.00. That makes GPT-5.6 Sol about 20% cheaper for the same work.

How do you compare the two?

We use the 60 benchmark tests both models have published scores on. The verdict counts the 30 tests in the eight capability areas, and a gap under one point (ten on rating-style scales) counts as a tie. The other 30 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 GPT-5.6 Sol with

OpenAI

Across the field

Compare Claude Opus 5 with

Anthropic

Across the field

All comparisons