Mercury 2.5
Mercury 2.5Alternatives?
CheaperQwen 3.5 Plusunstated+2%-23%$0.12 / $0.69
BetterClaude Fable 5unstated+7%+5,826%$10 / $50
OpenKimi K3unstated+4%+1,678%$3 / $15Sampling parameters are fixed+3CheaperQwen 3.5 Flashunstated+1%-66%$0.065 / $0.26
CheaperGLM 5.3 FlashunstatedOpensame-30%$0.15 / $0.50Defaults to max · Self-hosted+4Qwen 3.5 Plusunstated+2%-23%$0.12 / $0.69Qwen 3.5 Flashunstated+1%-66%$0.065 / $0.26GLM 5.3 FlashunstatedOpensame-30%$0.15 / $0.50Defaults to max · Self-hosted+4
Gemini 2.5 Flash Litethinking-1%-48%$0.10 / $0.40
DeepSeek V3unstatedOpen-3%-7%$0.28 / $0.42Context: 260K → 128KClaude Fable 5unstated+7%+5,826%$10 / $50Claude Fable 5.1unstated+7%+5,826%$10 / $50Replace forced tool_choice+5Gemini 4 Argonunstated+6%+1,085%*$2 / $10Synchronous output stops at 65,536+2Gemini 3.1 Pro Previewunstated+5%+1,233%$2 / $12Cannot use both thinking controlsGemini 3.8 Flashunstated+5%+344%*$0.75 / $3.75Sampling parameters are ignored+1Kimi K3unstatedOpen+4%+1,678%$3 / $15Sampling parameters are fixed+3
MiniMax M3unstatedOpen+3%+56%$0.30 / $1.20No strict JSON+1GLM 5.3unstatedOpen+2%+537%$1.40 / $4.40Reasoning cannot be disabled+3Kimi K2.6unstatedOpen+2%+407%$0.95 / $4Context: 260K → 256KGLM 5.1unstatedOpen+2%+537%$1.40 / $4.40Context: 260K → 203KBenchmarks
in Chat & KnowledgeFAQ
How much does Mercury 2.5 cost?›
$0.20 per 1M input tokens and $0.75 per 1M output tokens; cached input $0.02 per 1M. A typical benchmark task costs about $0.12 at default effort.
Is Mercury 2.5 free to use?›
There is no free API; the cheapest paid price is $0.20 per 1M input tokens.
How good is Mercury 2.5, and what is it best at?›
#165 of 334 in Chat & Knowledge, #75 of 132 in Coding, #95 of 133 in Agents & Tool Use, #97 of 133 in Vision & Documents.
Is Mercury 2.5 better than GPT-4.1?›
On Vals LegalBench, Mercury 2.5 scores 83.1 vs 83.1 — about the same.
How can I use Mercury 2.5?›
Through the inception API.
What is the context window of Mercury 2.5?›
260K tokens, with up to 66K output tokens.
When was Mercury 2.5 released? Is there a newer version?›
Released 2026-09-08. It is the current version in its line.
Is Mercury 2.5 open source?›
No, Mercury 2.5 is a closed model available through an API. The closest open-weights option here is Kimi K3.
Can Mercury 2.5 read images?›
No, it accepts text only.
What is Mercury 2.5?›
Mercury 2.5 is a closed language model from inception, released Sep 2026, the successor to Mercury 2.
What are the best alternatives to Mercury 2.5?›
Qwen 3.5 Plus (cheaper), Claude Fable 5 (better), Kimi K3 (open weights).