Head-to-head comparison

o3 vs Hy3

o3 (OpenAI) and Hy3 (Tencent) compared on the ModelCap Index, API price, context window, provider availability, weight access and every public benchmark board they share. Figures are the same ones shown on the live rankings; nothing here is a hidden score.

Snapshot as of 18 August 2026

As of 18 August 2026, Hy3 holds the stronger ModelCap Index position (#18 vs #37); Hy3 is 15.2× cheaper per output token ($0.528/1M vs $8.00/1M); Hy3 offers the longer context window (262K vs 200K tokens); and Hy3 ships open weights.

Which should you choose?

Choose o3 if…

ModelCap publishes no field on which o3 leads Hy3 for this pair.

Choose Hy3 if…

you want the stronger overall ModelCap Index position — #18 against #37 (67.5 vs 55.1 points).
API cost matters — $0.528/1M output tokens against $8.00/1M, about 15.2× cheaper.
your workload is prompt-heavy — input tokens cost $0.132/1M against $2.00/1M.
you need the longer context window — 262K tokens against 200K.
you want to self-host: Hy3 ships open weights while o3 is api only.
you want provider choice — 6 listed API providers against 1.
Arena coding is your yardstick — 1503 against 1460.
Artificial Analysis Intelligence Index is your yardstick — 42.2 against 31.1.
you want the more recently listed model — Hy3 was listed 6 July 2026, o3 16 April 2025.

o3 vs Hy3: specs, pricing and context

Specification comparison of o3 and Hy3
Field	o3OpenAI	Hy3Tencent
ModelCap Index position	#37	#18
Index score	55.1	67.5
Evidence	Measured	Measured
Input price / 1M tokens	$2.00	$0.132
Output price / 1M tokens	$8.00	$0.528
Context window	200K tokens	262K tokens
Max output tokens	100K	128K
API providers listed	1	6
Weight access	API only	Open weights
Input modalities	Image, Text, File	Text
First listed	16 April 2025	6 July 2026
Publisher	OpenAI	Tencent

Evidence: 4 public benchmark observations across 4 boards · 5 public benchmark observations across 5 boards. Prices are the lowest listed API offer per million tokens observed on the OpenRouter catalogue.

Benchmark scores: o3 vs Hy3

Public benchmark boards where o3 or Hy3 has a published result
Board	o3	Hy3	Leads
Arena codingArena (LMArena)	14601453–1466	15031486–1519	Hy3
LMArena AgentLMArena	—	-1.3%-2.6%–0.0%	Only one result
ARC-AGI-2ARC Prize Foundation	6.5%High	—	Only one result
SWE-benchSWE-bench (Princeton / SWE-agent team)	58.4%	—	Only one result
BFCL V4UC Berkeley (Gorilla)	63.1Prompt	—	Only one result
Artificial Analysis Intelligence IndexArtificial Analysis	31.1intelligence-index	42.2intelligence-index	Hy3
WildClawBench OpenClawWildClawBench	—	49.7	Only one result

Scores are the sources' own published figures for each model's best evaluated configuration; ModelCap never re-runs a benchmark.

Want a different pairing? Open the interactive comparison tool to swap either model for any current ranked language model.

o3 vs Hy3: common questions

Is o3 better than Hy3?

Hy3 ranks higher on the ModelCap Index as of 18 August 2026: #18 against #37. That is a capability ranking built from public benchmark evidence with published uncertainty; whether it is "better" for you also depends on price, context and where you can run it.

Is o3 cheaper than Hy3?

Hy3 is cheaper on output tokens: $0.528/1M against $8.00/1M. Input tokens are $2.00/1M for o3 and $0.132/1M for Hy3. Prices are the lowest listed API offer ModelCap observed, in USD per million tokens.

Which has the bigger context window, o3 or Hy3?

Hy3 has the larger context window: 262K tokens against 200K.

Which is better for coding, o3 or Hy3?

Arena coding: o3 1460, Hy3 1503 — Hy3 leads.

Are o3 and Hy3 open-weight models?

o3: API only. Hy3: Open weights. Open weights mean the checkpoint can be downloaded and self-hosted under its licence; API-only models are available solely through hosted endpoints.

Where can I run o3 and Hy3?

ModelCap currently lists 1 API provider for o3 and 6 for Hy3, from the OpenRouter catalogue snapshot the site serves; each model page lists the providers and their prices.

How current is this o3 vs Hy3 comparison?

Every figure comes from the sealed ModelCap dataset published 18 August 2026; the page re-renders within a minute of each data refresh, and the ModelCap Index positions are the same ones shown on the live rankings.